C-Media Xear 3D Driver User Manual
Contents
1. OK button to close the dialog box SCH Z Copyright 2003 2004 C Media Inc All Right Reserved 17 http www cmedia com tw http www Xear3D com Cep keacit sound Technology C Media Xear 3D UDA Driver User Manual Rev 1 1 Speaker Output Table 1 Speaker Output Function Description Function Description 1 Speaker Type Channels When you use different listening equipments you should choose corresponding speaker type like Selection Earphone 2CH for 2 or 2 1 speakers 4CH for 4 Speakers or Front 2 speakers plus rear earphone amp 6CH for 5 1 speakers or 3 1 speakers plus rear earphone However the actual output also depends on your sound source format and application program Please refer to Output Channel Specification in this document Default setting is 2CH 2 Bass Enhancement Option Bass Enhancement is to enhance Bass signal effect especially for Earphone Plus Mode It s available in 4 amp 6CH setting Most subwoofers of contemporary active PC 5 1 speakers would acquire bass signal from both Front and Rear channel sounds automatically in addition to the independent Bass channel What driver will do is to extract bass signal from some channels and to add it into others as descriptions below In 4CH setting Rear channel gt Front Channel In 6CH setting Front and Rear channel gt Independent Bass Subwoofer Channel When the rear channels are output to earphone inst2. You can adjust each channel volume via drag and move the Volume Control Sliders Default settings are all 0 dB at the top that means no extra gain or decay When move it to the bottom of the slider it will mute the digital sound for the channel The dB number below each slider will show the 1 Volume Control Sliders responding volume level When you want a higher volume level of digital audio you can enable Loudness It provides extra 3dB to 12dB gain to all channels The driver also has been designed with a sophisticated auto gain control for minimizing the signal clipping distortion However it is still not recommended to enhance the volume too much here if you want a best sound quality The better way is to increase the volume of external speakers or just to increase the Master Volume in Microsoft Volume Control explained in the following 2 Loudness w Auto Gain Control volume Left click Microsoft Volume Control button once You LJ will get the Master Volume Control Slider Reset all to Default Value Click the button to reset the volume of all 6 channels to 0 dB and Loudness to 9dB Copyright 2003 2004 C Media Inc All Right Reserved 24 http www cmedia com tw http www Xear3D com C Media Xear 3D UDA Driver User Manual Rev 1 1 Acres Xear 3d sound Technology Microsoft Volume To change the volume of different audio paths you should use Microsoft Volume Control Control as follows Please right
3. nie SE ee 5 Xe oan set 2ch Ach 5 1 ch e l Xear 3D Virtual Xear 3D Virtual FL FR RL RR Center 5 1ch with SHIFTER 5 1ch with 5 1ch with Subwoofer SHIFTER ON SHIFTER ON Xearphone ON Select S PDIF Out in the Format Data N A N A N A AP audio setting 2 channel Stereo PCM MS Media Player 2ch FL FR FL FR FL FR RL RR IFL FR RL RR Center Wave Audio MP3 CD C Media Media Rack Subwoofer if Bass Ge Use DirectSound Enhancement is Interface enabled Winamp old version Use 2ch FL FR FL FR FL FR FL FR Subwoofer if MCT Interface by default Bass Enhancement is before V 3 0 enabled Bass Enhancement is enabled H ch 3D Sound FL FR FL FR FL FR RL RR FL FR RL RR Center ch Analog Input May not need players 2 FL FR FL FR FL FR RL RR IFL FR RL RR Center Subwoofer 45 l Copyright 2003 2004 C Media Inc All Right Reserved http www cmedia com tw http www Xear3D com N A f C Media Xear 3D UDA Driver User Manual Rev 1 1 Comp Kear 305 sound Technology Note 1 For MCI application program like Winamp old version it just can deliver 2 channel stereo sound when playing general stereo music even you set 6CH It s only proper for the driver to enhance Bass sound which is directionless MIDI is in the similar situation Therefore you will only get 2 speaker or 2 1 speaker sound if you enable Bass Enhancement option 2 3D S
4. 1 1 2 In the Control Panel Start gt Setting gt Control Panel double click CMI Folders Administrative me Tools KR i Display Folder Options Add or Jate and Time Disc Deteckor gt DB D Game Internet Keyboard Mouse Controllers Options D Regional and Phone and Power Options Printers and Language Modem Faxes Speech System rey Sounds and Audio Devices Scheduled Tasks nd http www cmedia com tw http www Xear3D com C Media Xear 3D UDA Driver User Manual Rev 1 1 Acres Xear 3d sound Technology B MLHIA LLECTHOWIGS IHG Spea ker Output When you open the 3D Audio Configuration you will see the default Output tab as the figure below Speaker Output tab collects main setting options for analog output to speakers Si C Media 3D Audio Configuration A P E Audio Jack Function Description Sub tab Speaker Uutput J PDIF Volume Control Microphone sear 30 Information Audio Jacks Speaker Test 6 Speaker Type Channels 1 d Selection SE Speaker Test Sub tab O t Line Dut Front Speaker Out 2CH E Rear Speaker Out 4CH Bass Enhancement Option ee 6CH KL CenterSubwooter Speaker Out Bass Enhancement Center Bass Output Swap Option Center Bass Output Swap 4AL Monitor S4PDIF In From Front Speakers Monitor S PDIF In digital audio data from front speakers
5. Virtual Note Front Left Front Right Rear Left Rear Right and Center virtual speakers can be moved to anywhere Center is usually for voice in DVD and can be adjusted from now on Subwoofer signal is usually directionless low frequency sound to human ears Therefore just keep it move in horizontal to express strength or weakness Copyright 2003 2004 C Media Inc All Right Reserved 35 http www cmedia com tw http www Xear3D com C Media Xear 3D UDA Driver User Manual Rev 1 1 Cep Kear 35 sound Technology 5 1 Virtual SPEAKER SHIFTER Table 7 5 1 Virtual SPEAKER SHIFTER Function Description Continued Function Description When SHIFTER is turned ON though the Virtual Speakers will all be turned into blue it doesn t imply all virtual speaker will take effect anytime It depends on the sound source format and the application program The virtual speaker won t take effect if that channel has no digital audio Please refer to the table indicating effective virtual speakers below 5 1 channel 2D WinDVD pou Geert All Effective All Effective All Effective All Effective 2 channel Stereo 2D DirectSound FL FR FL FR FL FR RL RR JFL FR RL RR Sound MP3 CD Interface like Center Subwoofer if 5 1 Virtual Speakers i Bass i Enhancement is enabled 2 channel Stereo 2D MCI Interface FL FR FL FR FL FR FL FR Sound MP3 CD Winamp old Subwoofer if versions before Bass 3 0 Enhan
6. click 3D Audio Configuration to find it out lure Control n TITE Sieger Pier Sound Recorder Multimedia Properties Evit 30 Audio Configuration peal Bac PM ii Volume Control Options Help Volume Contral 4 wave D Sw Synth 6 Monoln 7 Microphone 8 CO Player 9 Am 10 Lneln 11 Left Right Balance 2 Balance Balance Balance Balance Balance Balance Balance Balance Slider Fe e 40 3 ae 407 404 ale Ab Volume Volume Volume Volume Volume Volume Volume Volume Slider L e Sot ale SE dE Mute all Mute Mute pism Mute Ca Mute C Media Wave Device Copyright 2003 2004 C Media Inc All Right Reserved 25 http www cmedia com tw http www Xear3D com C Media Xear 3D UDA Driver User Manual Rev 1 1 Comp keacit sound Technology Microsoft Volume Control Table 4 Microsoft Volume Control Function Description a a Function Description 1 Volume Volume Slider You can move it up and down to You can move it up and down to change the volume for each audio path the volume for each audio path Left Right Balance Slider E it to Left the ticle fave beeen ae channel sound volume will decrease Pan it to Right the left channel sound volume will decrease te OE To click Mute will mute the channel audio For Master Volume it will mute All 4 Volume Control This is the Master Volume Control and it influences all channels audio volume o5 wae UC controls
7. following text Demo Program Block This block contains multi channel music including speakers testing demo program Sound Effect Block This block provides 27 Environment Effects 3 Environment Sizes and 10 band pre set Equalizer Title Bar and Version It s the program title bar and will show version information if you put your cursor on the bar for a while Information SHIFTER ON OFF Virtual SPEAKER SHIFTER ON OFF switch Just click ON OFF button to turn it on or off Listening Appliance Mode Femen tr listener 5 1 Virtual Soeakers A live guide for introduction and fine tune of Virtual SPEAKER SHIFTER Please listen to the explanation and then try to drag the virtual speakers to anywhere you want for the most balanced and comfortable sound field Enjoy the interesting Guide This is just available while SPEAKER SHIFTER is turned ON It depends on and synchronizes with the speaker type you selected Under 4CH or 6CH the logo E will show up and means that the rear speakers can be replaced with open aired earphones Earphone Plus listening mode as long as you turn on SHIFTER When you select to use earphone only you can still hear 5 1 channel sound that is so called 5 1 Xearphone It s even more flexible than Dolby Headphone since you can shift the multi channel signals to the best sound field This is a top view Listener s head is a relative position reference for virtual speakers There re 6 Virtual Speake
8. is a C Media audio related Information tab in 3D Audio Configuration You can get a whole picture about the audio chip driver version 3D Audio Engine Microsoft DirectX Version and Configuration Version itself SC C Media 3D Audio Contiguration L L I Speaker Output S PDIF Volume Control Microphone Sear 3D Super 3D Audio Engines zz 20 Audio Engine west CRL3D DS3D EAX2ZO A3D1 0 C Media Audio Chip Audio CODEC CMIS7394 C Media UDA Driver V 029 Audio Driver Version 5 12 1 29 South Bridge on your system Audio Controller INTEL a200 DA Audio Controller i Direct Version OOO Deew Microsoft DirectX version on E erision Directs 5 1 your system i ee al C Media 30 Audio Configuration Wer 1 0 0 2 3D Audio Configuration Copyright C 2000 2002 C Media Inc Version wee URL www cmedia com tw C Media Website Copyright 2003 2004 C Media Inc All Right Reserved 44 http www cmedia com tw http www Xear3D com C Media Xear 3D UDA Driver User Manual Rev 1 1 MEE Xear 305 sound Technology 5 Output Channel Specification This chapter will summarize the specification about the actual output channel the speakers that will have sounds for different audio applications sources Table 11 Output Channel Specification WinDVD PowerDVD Down mix 6ch to Down mix 6ch Down mix 6ch to Down mix 6ch to
9. is sometimes shared by center subwoofer output and will be grayed like the picture below when you set 6CH speaker output At this moment you can still use front panel microphone Microphone Selection Mute Microphone 2 Microphone Selection C FrontPanel Microphone Microphone 20dB Volume Boost Click the item will enhance microphone volume by 20 dB Copyright 2003 2004 C Media Inc All Right Reserved al http www cmedia com tw http www Xear3D com C Media Xear 3D UDA Driver User Manual Rev 1 1 Zrert Kear 3D sound Technology Dei DIA ELEC THOHIGS IAG Xear 3D C Media UDA driver now supports Xear 3D 5 1 Virtual SPEAKER SHIFTER and sound effects Please refer to P 3 introduction Just click the left button in Xear 3D tab and then the new friendly fancy graphic user interface will pop up Sc C Media 3D Audio Configuration Speaker Output S PDIF olume Control Microph ce Wear D Ip en 5 1 Virtual SPEAKER SHIFTER and Sound Effects 6 Shiftable Virtual Speakers 5 1 earphone 2 Speaker Virtual Theater Enviroment Effecta Sizes 10 B and Equalizer 4 C Media Xear 3D Advanced Program Mear 30 Sound Advanced Demo Program Environment hi Copyright 2003 2004 C Media Inc All Right Reserved 32 http www cmedia com tw http www Xear3D com C Media Xear 3D UDA Driver User Manual Rev 1 1 Acer Xear 3d sound Techn
10. item in the list just select it and then click button Copyright 2003 2004 C Media Inc All Right Reserved Ev http www cmedia com tw http www Xear3D com C Media Xear 3D UDA Driver User Manual Rev 1 1 Eer keacit sound Technology DeMLvA LLECTHORIGS ING Xear 3D Advanced Program also provides plentiful multi channel music demo program ear S H p prog Multi channel Music including each speaker testing Another Play3D demo program will be described later Demo kA C Media Xear 3D Advanced Program V G t Size Advanced Music Sources Selection 5 1 Speaker Display ej Play m Stop Play Button mg Copyright 2003 2004 C Media Inc All Right Reserved 40 http www cmedia com tw http www Xear3D com C Media Xear 3D UDA Driver User Manual Rev 1 1 Cep Xear 305 sound Technology MEA ELEC THORIGS 1ML Multi channel Music Demo Table 9 Multi channel Music Demo Program Function Description Function Description This demo program provides each speaker testing and three 5 1 channel music You can get feeling about 1 Multi channel Music Demo 5 1 channel surround music and use it to test SPEAKER SHIFTER too All demo music sound here will repeat playing if you don t press Stop button Music Sources Selection There are three pieces of 5 1 channel music for your selection Please choose one and click the button This is a 5 1 channel speaker environment When the
11. speaker has sound it will be lighted up You can also click each speaker for testing your connection configuration More important it can assist you in adjusting your virtual speakers for multi channel audio applications like DVD bs C Media Aear 30 Advanced Program Mea St i 3D Ia eon Advanced Sound Effect E Step 2 Adjust the corresponding virtual speaker 3 15 1 Speaker Display Copyright 2003 2004 C Media Inc All Right Reserved 41 http www cmedia com tw http www Xear3D com C Media Xear 3D UDA Driver User Manual Rev 1 1 Cep Xear 3d sound Technology G A Xear 3D Play3D Xear 3D Advanced Program also provides interesting Play3D demo programs as below Demo After installing the program with setup program you will find the program from the path Start gt Programs gt C Media 3D Audio gt Play3D Demo dr C Media Play 3D Demo Near 305 Lo Sound AHER LEME E C Media mg 30 Positional Audio Source k Sea haa E EE eer Sound Source Speaker Mode m 6 a 3 1 64 KE Exit Button P Stop Button Copyright 2003 2004 C Media Inc All Right Reserved 42 http www cmedia com tw http www Xear3D com C Media Xear 3D UDA Driver User Manual Rev 1 1 free Xear 3d sound Technology Play3D Demo Table 10 3D Sound Demo Program Function Description Function Function Description Sound Source Selection There are five 3D sound sources built in Just choose one and
12. to use analog CD audio you have to connect the analog audio output of CD ROM to CD In CD Player connector on M B and switch the both settings of CD ROM DVD ROM in device manager and the application program like Media Player to Analog CD If you see this item it may imply your H W has an Auxiliary input as a secondary stereo input like CD In 10 jAux It s a backup for your secondary CD ROM DVD ROM or other use Line In is a common stereo input and the connector is usually one of the audio jacks in the back panel You i Sech can refer to the Jack Function Description tab in 3D Audio Configuration It s usually used for the line input from consumer acoustics devices Copyright 2003 2004 C Media Inc All Right Reserved 21 http www cmedia com tw http www Xear3D com C Media Xear 3D UDA Driver User Manual Rev 1 1 Cep Xear 305 sound Technology Micros oft If you want to record audio in your computer you need to set the Microsoft Recording r Control correctly You can find it from the path Volume Control gt Options gt Properties Recording Control gt Recording The volume balance is similar to Playback Volume Control ii Recording Control Options Help SPDIFin 2 Stereo Mis 3 Microphone 4 CE Dauer 5 Aus 6 Line ln 7 Wave 8 Balance Balance Balance Balance Balance Balance Balance p 9 J 4b ae 5 4 04 4p 5 G04 4 Volume Volume Volume Volume Volume Volume Volume Select One i SS SH IS SIN
13. C MEDIA ELECTRONICS INC C Media Electronics Inc UDA Driver Enhanced by Xear 3D Sound Technology User Manual Suitable for CMI9739 A 9738 S AC 97 Audio Chips and Rev 029 later driver Revision 1 1 Rev Date Feb 25 2003 C Media Xear 3D UDA Driver User Manual Rev 1 1 Comp Kear 305 sound Technology Notice The content furnished in this document is C Media audio product knowledge for customers reference However C Media Inc assumes no responsibility for the consequences of use of such information The information included is subject to change without notice This publication supersedes and replaces all information supplied previously No part of this manual can be reproduced or transmitted in any form or by any means for any purpose without the permission of C Media Electronics Inc Trademarks C Media C Media logo and Xear 3D are trademarks of C Media Electronics Inc EAX and A3D are trademarks of Creative Technology Ltd Microsoft DirectSound3D Windows are trademarks of Microsoft Corporation Other company and product names may be trademarks of the respective companies with which they are associated Copyright Copyright 2003 2004 C MEDIA Electronics Inc C MEDIA Electronics Inc 6F 100 Sec 4 Civil Boulevard Taipei Taiwan 106 R O C URL HTTP WWW CMEDIA COM TW Copyright 2003 2004 C Media Inc All Right Reserved l http www cmedia com tw http www Xear3D com C Media Xear 3D UDA Dri
14. Ri W Recording Source SUR LA zB LA ET Lt Loy Select Select Select Select Select Select CT ass C Media Wave Device Copyright 2003 2004 C Media Inc All Right Reserved 28 http www cmedia com tw http www Xear3D com C Media Xear 3D UDA Driver User Manual Rev 1 1 Cep Kear 3d sound Technology Microsoft Recording Control Table 5 Microsoft Recording Control Function Description Function Function Description Select One Recording Source Select one audio path you want to record from Only one item can be selected for recording It means to record the digital PCM audio data from S PDIF input Click the Advanced you can see the extra setting item Advanced Controls for SPDIF In EU zg Tone Controls These settings control how the tone of pour audio sounds Bass ie ues eee ee vate 2 S PDIF IN SE Other Controls These settings make other changes to how vour audio sounds See your hardware documentation for details Validity Check is enabled to check if the S PDIF input audio is valid PCM audio data or not to get rid of recording noise from AC 3 DTS or invalid audio e Stereo Mix is to record all mix of audio sources except S PDIF In Select to record Microphone input audio The Advanced setting is the same as Fach above as reference Es cia as reference reference 8 Wave To record the digital playing audio only If you want to record the playing MP3 d
15. ace change and hence the volume will be influenced if SHIFTER is ON Total volume is to move all virtual speakers close to or far from the listener and then change the volume 11 Total Volume ge Up arrow is to increase volume and down arrow is to decrease One step is 1dB Clicking the button will make all virtual speakers grouped and then you can drag and rotate all speakers 12 Rotate Speakers SE simultaneously with the listener as a center It s useful when you just change your direction of face Volume Scale Display will show you volume status in dB for each channel depending on each speaker s position You can take it as a volume balance reference when adjusting the virtual speakers 13 Volume Scale Display Of course if your actual speakers are not placed in the correct points You should use virtual speakers to compensate it Click Exit to close Xear 3D Advanced Program but all sound effect and settings are valid if still in Xear 3D Mode Once you switch to Common Mode the program will be automatically closed and all effects are disabled too Copyright 2003 2004 C Media Inc All Right Reserved 3 http www cmedia com tw http www Xear3D com C Media Xear 3D UDA Driver User Manual Rev 1 1 MEDIA ELEC THOHIGS IHE CHE Kear 3D sound Technology Xear 3D Sou nd Xear 3D Advanced Program provides another functional block Sound Effect You can Effect create a different feeling for you
16. cement is enabled 2 3D Sound Games FL FR FL FR FL FR RL RR JFL FR RL RR Center Note 1 Center speaker is usually for voice in the movies When playing stereo music we do not mix stereo music into center channel currently in fear of damage to the stereo directionality 2 For MCI application program like Winamp it just can deliver 2 channel stereo sound even you set 6CH It s only proper for the driver to enhance Bass sound which is directionless 3 3D Sound is currently positioned by HRTF 3D Engine at maximum 5 speakers Copyright 2003 2004 C Media Inc All Right Reserved 36 http www cmedia com tw http www Xear3D com C Media Xear 3D UDA Driver User Manual Rev 1 1 Cep Kear 3d sound Technology 5 1 Virtual SPEAKER SHIFTER Table 7 5 1 Virtual SPEAKER SHIFTER Function Description Continued Function Description This circle has 6 default positions for each virtual speaker On this circle virtual speakers are on 0 dB reference distance no extra gain or decline of volume The volume of each channel will decay when the virtual speaker is far from the circle On the contrast it will increase when the virtual speaker is 10 0 dB Default Circle ee n approaching the central listener inside the circle Please see the Volume Scale Display below Please note that if you choose different Environment Sizes the circle will enlarge in Small size or narrow in Large size to express the relative sp
17. click the button You can also select your own wave file as the sound source limited to mono or 2ch stereo wave files 2 User Defined Sound Source Please click the button to select a wave file and the filename will be listed in the User Defined menu When you want to delete any file just click button SE Eer Gauree Postion The red ball means the 3D sound source It indicates the relative position to the listener There are five moving path for your trying Fa g Drag Path Horizontal Circle Vertical Circle K Z Path Random Curve You can also use this program to adjust your virtual speakers before playing 3D audio applications like gaming We would suggest using the drag path because it s most flexible Just place the ball in four right angle directions and see if the sound is from the correct direction If not adjust your virtual speakers till the direction sounds right 4 Moving Path Selection Note It will be better for 3D sound positioning if you use Earphone Plus mode 2 Front Speakers Rear Earphone or at least 4 speakers You have 6 local Environment Effects on the same page for convenience It s similar to EAX effect in the 3D 5 Environment Setting Sg Copyright 2003 2004 C Media Inc All Right Reserved 43 http www cmedia com tw http www Xear3D com fr C Media Xear 3D UDA Driver User Manual Rev 1 1 MEE Xear 3d sound Technology CTO Information There
18. e 10 Play3D Demo Program Function Description KKK P 43 Table 11 Output Channel SGpechificatton see KKK EE EEEEE KREE E KEE KKK KKK KEE KEE KEE ENEE EE E KEN P 45 Copyright 2003 2004 C Media Inc All Right Reserved 4 http www cmedia com tw http www Xear3D com C Media Xear 3D UDA Driver User Manual Rev 1 1 cmer Kear 305 sound Technology CeMLDIA EL ECTHONIGS IHG 1 Introduction Thanks for choosing C Media audio solution The user manual is a guide for users to understand how to use the new generation UDA driver for all C Media AC 97 audio chips with exclusive Xear 3D sound technology C Media provides a value added PC audio total solution All kinds of applications can get maximum support With this manual users can quickly take advantage of these great features to enjoy amazing sound effects even better than consumer acoustics Support EAX2 0 or A3D1 0 Support DS3D H W amp S W C Media Earphone Plus Mode C Media SPEAKER SHIFTER Interactive Applications F DA SOLDIER OF FORTUNE DIEROF FORTUNE Games SPEAKER SHIFTER 5 1 Xearphone 2 Speaker Virtual Theater Earphone Plus Personal Theater s Enhanced 5 1 Home Theater DVD Movies Dolby Digital DTS Kear d Sound Non Interactive Applications Environment Effects Environment Sizes i 10 Band Equalizer Music MP3 CD Figure 1 Xear 3D Sound Features for All Applications http w
19. ead of rear speakers in Earphone Plus Mode you may not be aware of the bass component within the rear channel from the subwoofer Moreover a few subwoofers may not extract bass from other channels automatically In these situations you may need this option especially Default setting is enabled in Xear 3D Mode and disabled in Common Mode 3 Center Bass Output Swap Enable this option will exchange the center bass output channel PC speaker manufacturers define Option typically that the center signal is delivered by tip of the stereo plug and the bass signal is by ring of it like the figure below However some speakers have contrast definition That s why we offer the option to avoid possible trouble Tip Ring GHD Tip Ring GHD Copyright 2003 2004 C Media Inc All Right Reserved 18 http www cmedia com tw http www Xear3D com rer keacit sound Technology B MLHIA EL ECTHONIGS IHG C Media Xear 3D UDA Driver User Manual Rev 1 1 Speaker Output Table 1 Speaker Output Function Description Continued Function Description A Monitor S PDIF In from Front Speakers To listen to the digital S PDIF input audio data from front speakers in real time you should select the monitor function The data should be PCM format instead of compressed ones like AC 3 or DTS When you enable it the digital audio playback through front speakers will be replaced by S PDIF In data So you will not hear the playback audio from fron
20. erent applications and sound sources realistic 3D sound Just use a general open aired earphone as rear speakers V Provides a new multi channel listening mode Earphone Plus You can use open aired earphones in place of rear speakers to save the cost and setup trouble of rear speakers 2 HRTF 3D Positional Audio Xear 3D integrated world standard Sensaura s CRL3D engine for providing the best HRTF Head Related Transfer Function 3D positional audio and related features as follows which are necessary for gaming and interactive applications ze EAX 1 0 amp 2 0 Creative Environment Audio eXtension has open aired earphones as been a world wide standard for high quality games follows that will not stuff into AJ A3D 1 0 your ears and prevent you Compatible with Microsoft DirectSound 3D H W amp S W from hearing front speakers sound 3 Sound Effects x lt 27 Environment Effects with sound reflection and reverberation characteristics lt V 3 Environment Size scenarios for each environment lt 10 band Equalizer function with 12 preset modes Copyright 2003 2004 C Media Inc All Right Reserved 8 http www cmedia com tw http www Xear3D com C Media Xear 3D UDA Driver User Manual Rev 1 1 Cep Kear 305 sound Technology All these sound effects make your audio more customized special and amazing Demo Program Multi channel Music Multi channel Music Demo Program has three 5 1 channe
21. igital CD VCD DVD etc please select to record wave Copyright 2003 2004 C Media Inc All Right Reserved 29 http www cmedia com tw http www Xear3D com frt keacit sound Technology C40 0DIA ELECTHOHIES ING Microphone Mute Microphone ER Selection Microphone Selection T 5 RearPanel Microphone 3 Microphone 20dB Volume 20 dB Boost Boost C Media Xear 3D UDA Driver User Manual Rev 1 1 C Media driver provides microphone setting in 3D Audio Configuration directly for more convenience You can control microphone options in the tab though you can also reach them in Microsoft volume control SC C Media 3D Audio Configuration L L I Speaker Output S PDIF Volume Conthal Microphone F ear 30 Information 1 Mute Microphone Front Panel Microphone Microphone Boost Copyright 2003 2004 C Media Inc All Right Reserved 30 http www cmedia com tw http www Xear3D com C Media Xear 3D UDA Driver User Manual Rev 1 1 Ccmen Xear 3d sound Technology C40 0IA ELECTRONICS ING Microphone Table 6 Microphone Function Description Function Description To click this item will disable microphone inputs 1 Mute Microphone To select the microphone input that you are going to use Some systems do not support 2 microphone inputs and so you won t see two items The rear panel microphone jack
22. inated Otherwise it would be transmitted all the time When this option is enabled the copyright of S PDIF output audio data will be asserted Then it can be Serial Copy Protection Option jonly recorded once but cannot be copied again according to SCMS Serial Copy Management System mandated by Audio Home Recording Act of U S in 1992 Copyright 2003 2004 C Media Inc All Right Reserved 22 http www cmedia com tw http www Xear3D com C Media Xear 3D UDA Driver User Manual Rev 1 1 Comp keacit sound Technology Volume Control C Media driver provides the digital volume control for all 6 channels in 3D Audio Configuration You can regulate each volume to the speaker for current playing digital sound sources It s not effective for analog input sources C Media 3D Audio Configuration GC Speaker Output S POIF Yolume Control Microphone Mean 3D Information Volume Control Sliders Volume Controls for SE source only Loudness wl z Auto Gain Control E 0 db H dB 0 db 0 dB 0 db 0 dB a Front Left Front Right AearLett Rear Right Center GE Reset all to Reset all to Default Value Value Copyright 2003 2004 C Media Inc All Right Reserved 23 http www cmedia com tw http www Xear3D com C Media Xear 3D UDA Driver User Manual Rev 1 1 free keacit sound Technology Volume Control Table 3 Volume Control Function Description Function Description
23. j Music Pub Recommended for pops There are more options in the More Options List Click the button again will turn it OFF E E More Environment Options List Environment Options List There are still other 23 Environment options in the list Just choose one and click More Options button Listening Environment Size There are 3 Size options for each environment Different Sizes imply different reverberation parameters to Small Medium Large let you feel the space difference Default setting is Medium We provide 10 Band Equalizer 30 16K Hz for you to compensate the frequency response of your speakers 10 Band Equalizer i or to create different frequency response curves You can move the slider of each band to fine tune We also pre set 12 models of Equalizer for your utilization conveniently For Example if you want more 12 Pre set Equalizer Models live show feeling just click Live button The same to click it again can turn it OFF Default setting is flat no effect When you have fine tune a personal model for Equalizer you can give it a name in the blank and click button Then it will be save into the User Defined list Just select it in the list next time you want to use ck EE sliders User Defined Equalizer List Ny ewe ae Treble Li Rock ABC Step2 Key in a new name Soft Rock Jazz Metal NDER RAP Classic Vocal ER If you want to delete any
24. l melodies for playing You can also click on the speakers respectively for testing each channel and adjust virtual speakers before playing multi channel audio applications like DVD Play3D Demo Play3D Demo provides 5 sound sources and moving paths for 3D audio playing You can feel 3D positional sound You can also use this program to adjust your virtual speakers before playing 3D audio applications like gaming Copyright 2003 2004 C Media Inc All Right Reserved 9 http www cmedia com tw http www Xear3D com C Media Xear 3D UDA Driver User Manual Rev 1 1 Cep Xear 3d sound Technology LECTHOHIGS It Driver Function Diagram Figure 2 UDA Xear 3D Driver Function Diagram Copyright 2003 2004 C Media Inc All Right Reserved 10 http www cmedia com tw http www Xear3D com C Media Xear 3D UDA Driver User Manual Rev 1 1 Cep Kear 305 sound Technology 3 Audio H W S W and Speaker Setup Audio Hardware C Media UDA driver is designed to support all C Media audio chips 1 CMI9739 A 6ch AC 97 CODEC 2 CMI9738 S 4ch AC 97 CODEC 3 CMI8738 series products PCI 6 4ch audio chips If you bought the motherboard or the system with a C Media audio chip on board you don t have to do any audio hardware setup If you bought a sound card using C Media audio chip you should install your sound card to PCI slot on your motherboard first After that you can continue to install the audio driver soft
25. nt audio track 2 speaker mode LL Porat T aE Epe Playing Digital Audio to Digital GE Attributes FoI TEk S PDIF Output 2 ES Dol iy curona Compatte Vocal options EE S Enable S PDIF output Cancel Since Xear 3D Virtual Speakers can always perform 6CH audio we don t recommend you to select 2 or 4 speaker mode in the software player Copyright 2003 2004 C Media Inc All Right Reserved 21 http www cmedia com tw http www Xear3D com C Media Xear 3D UDA Driver User Manual Rev 1 1 Cep keacit sound Technology S PDIF Table 2 S PDIF Function Description Continued Function Description This function is to convert analog input audio like Line In CD In Microphone In signal to S PDIF digital output in real time This is useful to transfer the analog audio from one device to the S PDIF interface of another such as the external decoder or the amplifier of Home Theater The analog input signal needs to be recorded and converted to digital format Therefore you have to click Select Source button and select one analog source in the following panel Actually the selected item synchronizes with the recording panel of Microsoft Select Source Stereo Me Microphone 9 Convert Analog Input to Digital Output CD Player wine C Line In s et C Media AC 97 CODECs support S PDIF output with analog output at the same time When choosing No Output S PDIF output signal will be term
26. ology MEDIA ELEC THOHIGS IHG Near 3D 5 1 Virtua Xear3D Advanced Program has three functional blocks SPEAKER SHIFTER Sound SPE AKER SH IFTER Effect and Demo Program We will introduce SPEAKER SHIFTER first 5 1Virtual SPEAKER SHIFTER aS C Media Xear 3D Advanced Program intua l i Block G t Ca C Meis ep l SHIFTER ON OFF Sound Effect Block SHES Ses A oS D Virtual S Ge d ES Let LS E AUS eee ad Ei i Sp 0 e 2 1 SHIFTER Guide Listening Appliance Mode Reset Virtual Speakers Exit the Program Copyright 2003 2004 C Media Inc All Right Reserved 33 http www cmedia com tw http www Xear3D com Volume Scale Display ac es Ger i E d C40 0IA ELECTRONICS IHG 5 1 Virtual SPEAKER Cep Kear 3d sound Technology C Media Xear 3D UDA Driver User Manual Rev 1 1 SHIFTER Table 7 5 1 Virtual SPEAKER SHIFTER Function Description Function Description The SPEAKER SHIFTER block provides an advanced amazing and considerate feature dynamically adjustable multi channel sound system no matter what listening appliance you use and what application you are running You do NOT have to endure unbalanced speaker placement due to spatial 5 1 Virtual SPEAKER SHIFTER limitation You can enjoy multi channel surround sound with even an earphone or usual 2 speakers Besides this block will show a reference figure for Environment Size settings that will be described in the
27. ound can be currently positioned by HRTF 3D Engine at maximum 5 speakers FL FR RL RR Center 3 In 4CH or 6CH mode the analog input audio microphone or stereo input will be duplicated to rear channels and center subwoofer only for CMI9739A new revision by the hardware copy mechanism Copyright 2003 2004 C Media Inc All Right Reserved 46 http www cmedia com tw http www Xear3D com
28. r music including 27 Environment Effects Environment Size amp 10 Band Equalizer with 12 pre set models K4 C Media Xear 3D Advanced Program Sound Effect Block ZS Tar Dp Ter Advanced Listening Environment Options S E VG virtual S EAKER SHIFTER d ki K lsgd A Bathroom Concert Hall Sewer e Appliance Mode ed G e 3 1 4 3 E Pipe Music Pub ees More Environment Options List Ts es Carpeted hallway Hallway Listening Environment Size ae corridor Small Medium Large Mountains Quarry Plain op Parking lot a my penta oat Under water Tint ig i i Izz 10 Band Equalizer User Defined Equalizer List FL C 12 Pre set Equalizer Models W Bass d j Delete Copyright 2003 2004 C Media Inc All Right Reserved 38 http www cmedia com tw http www Xear3D com C Media Xear 3D UDA Driver User Manual Rev 1 1 Acres Xear 3d sound Technology Sound Effect Table 8 Sound Effect Function E ae Function Function Description Ez Saind Eie Biack Wee SH provides 27 Environment Effects 3 Environment Sizes and 10 band Equalizer with 12 pre set Environment Effects control the production of sound reflection and reverberation characteristics to Listening Environment Options simulate the real listening environments Just click the four environment buttons 2 Bathroom Concert Hall Sewer Pipe Music Pub fal Bathroom ei Concert Hall al Sewer Pipe Fi
29. ra P 30 lt Xear 3D 5 1 Virtual SPEAKER GEIER P 32 lt Xear 3D Sound Er EE P 38 lt Xear 3D Multi channel Music Demo P 40 lt Xear 3D Play3D Demo P 42 tees eege Ee bs cents A ETE EAEE EE A P 44 5 OULDUE Channel SpecifIcatlO TEE P 45 Copyright 2003 2004 C Media Inc All Right Reserved 3 http www cmedia com tw http www Xear3D com Cp Kear 305 sound Technology C Media Xear 3D UDA Driver User Manual Rev 1 1 List of Figures Figure 1 Xear 3D Sound Features for All Appltcattons see P 5 Figure 2 UDAO25 Xear 3D Driver Function DIAGraMm ccccccccccseeeeeeeeeeeeeeennnnnnnnnensees P 10 List of Tables Table 1 Speaker Output Function DeSCFriptiONn ccccssnnnscccceesscnnnneueeeeeeessnnnueeeeegenann P 18 Table 2 S PDIF Function REENEN P 21 Table 3 Volume Control Function Descrpotion kk KKK KKK KEE ERR E EK KEE KEE KEE P 24 Table 4 Microsoft Volume Control Function DeSCription cccccccsssseceeeeeeeseeeueeneess P 26 Table 5 Microsoft Recording Control Function DeSCription c ccccessssceeeeereeeeeenens P 29 Table 6 Microphone Function DeSCFiptiOn cccsscccccccccccccccccennnnnneeeeeeeeeecesssennnunnnes P 31 Table 7 5 1 Virtual SPEAKER SHIFTER Function Description ee e P 34 Table 8 Sound Effect Function DESCriptiOn ccccccccccccsccccssssseeneeeeeneesenensnnenesusnnsans P 39 Table 9 Multi channel Music Demo Program Function DeSCTFiIptiONn ccccccccccccecees P 41 Tabl
30. rs here and they show a typical 5 1 surround sound environment Every Virtual Speaker represents the positioning of a channel sound signal to the physical speaker It allows you to shift the signals instead of the speakers whenever you want to adjust the sound field In addition to the angle change the sound will decay with the distance between the listener and the speaker You can see the correspondent volume value in decibels dB in the Volume Scale Display at the bottom Please note that if you choose different Environment Sizes the speakers will enlarge in Small size or narrow in Large size to express the relative space change Copyright 2003 2004 C Media Inc All Right Reserved 34 http www cmedia com tw http www Xear3D com C Media Xear 3D UDA Driver User Manual Rev 1 1 Ccren Xear 305 sound Technology R MLHA PLECTHORIGS ING 5 1 Virtual SPEAKER SHIFTER Table 7 5 1 Virtual SPEAKER SHIFTER Function Description Continued Function Description When SHIFTER is turned OFF the Virtual Speakers will be in gray status When SHIFTER is turned ON the Virtual Speakers will be turned into blue The following are the steps to use the Virtual SPEAKER SHIFTER Step 1 Run any audio applications DVD VCD Games MP3 CD Step 2 Turn On SHFTER Xear 3D0 5 1 Virtual SPEAKER SHIFER DO 5 1 Virtual Soeakers Step 3 Click and Se the ES to Ze you want for most comfortable sound field ear Ak bt
31. t speakers Some systems do not have S PDIF input and therefore you won t see this item 5 Audio Jack Function This tab will indicate a jack function map by color and text description corresponding with your current gt Wpescupton tay e output setting Please confirm you have connected your hardware to correct jacks before using Speakers Test Sub tab This tab shows the speaker figure and test environment complying with your speaker type setting as follows You can click Auto Test button or just click each speaker for testing your audio connection The sound will repeat unless you click Stop 6CH 5 1 Speakers Mode Earphone Mode Audio Jacks Speaker Test 7 Ob button All setting change will be activated once you click it To click OK button will save your settings and close the 3D Audio Configuration program Copyright 2003 2004 C Media Inc All Right Reserved 19 http www cmedia com tw http www Xear3D com C Media Xear 3D UDA Driver User Manual Rev 1 1 Cep Kear 305 sound Technology CML DIA ELECTHOWIGS IHG S PDIF C Media driver supports digital S PDIF output Sony Philips Digital InterFace developed by SONY PHILIPS to provide a low distortion digital data transfer between audio devices but some of our chip CMI9738 don t support it and hence you will not see the relevant items There may be an optical or coaxial connector for S PDIF on your system When you select S PDIF tab yo
32. the front 2 channels digital playing audio sources PCM format based on Microsoft s definition CH SW Synth This one is to control the volume of Microsoft Software Synthesizer MIDI wavetable gt Mea Mono In is the analog mono input For examples PC Beeper speakerphone input It depends on your H W system design This is Microphone input path In its Advanced setting you may see the page as follows Advanced Controls for Microphone These settings can be used to make fine adjustments to your audio Tone Controls These settings control how the tone of pour audio sounds Bass Treble Microphone Other Controls us SS Hee other changes to how your audio sounds See aeptation for details 2 Alternate Micropbosg Close Microphone Boost is to boost the Microphone volume by 20dB Alternate Microphone is the same as Front Panel Microphone Both of these setting are also displayed in the Microphone tab of C Media 3D Audio Configuration Copyright 2003 2004 C Media Inc All Right Reserved 26 http www cmedia com tw http www Xear3D com C Media Xear 3D UDA Driver User Manual Rev 1 1 Comp keacit sound Technology IMEDA ELECTHOHICS IHG Microsoft Volume Control Table 4 a Volume Control Function Description Continued Function Function Description CD Player means the analog audio CD ROM input Windows XP default setting is Digital CD playing If you want
33. u to use C Media exclusive Xear 3D Earphone Plus listening mode that allows you to use common open aired earphones in place of rear speakers for rear surround sounds Just turn on Virtual SPEAKER SHIFTER and then Xear 3D engine will produce rear sound field for you through the earphones Therefore you can easily own a personal theater environment at home Internet caf or in the office Earphone Plus helps you to save much money for rear speaker and to avoid space limitation and much setup troubles Earphone Plus listening mode Copyright 2003 2004 C Media Inc All Right Reserved 13 http www cmedia com tw http www Xear3D com C Media Xear 3D UDA Driver User Manual Rev 1 1 Cep Kear 305 sound Technology 2 4CH Audio Chips CMI9738 S CM18738 CMI8738 SX If the audio chip on your system supports 4 channels output it means your system can deliver Ach surround sound Front Left Front Right Rear Left Rear Right like the figure below When playing DVD that has 5 1ch audio the center channel can be delivered by synthesis of Front Left and Front Right channels 4 Speakers Copyright 2003 2004 C Media Inc All Right Reserved 14 http www cmedia com tw http www Xear3D com C Media Xear 3D UDA Driver User Manual Rev 1 1 Acres Kear 305 sound Technology 4 User Interface Function Description C Media designs a very user friendly user interface to set up the audio functionality The following is the g
34. u will see the setting page as the figure below 2a C Media 3D Audio Configuration speaker Output Whlume Control Microphone Xear 3D Information S PDIF Output Source Format Playing Digital Audio to Digital S PDIF Output i 2 Playing Audio 48 kHz Output Convert Analog Input to Digital S PDIF Output Analog Input to S PDIF Out O No Output No Digital Output 4 Serial Copy Protection Serial Copy Protection Option Copyright 2003 2004 C Media Inc All Right Reserved 20 http www cmedia com tw http www Xear3D com C Media Xear 3D UDA Driver User Manual Rev 1 1 Cep keacit sound Technology S PDIF Table 2 S PDIF Function Description Function Description Output digital playing audio from your computer like DVD VCD digital CD MP3 Wave etc through S PDIF in 48KHz sample rate 44 1K source will be up sampled to 48K When playing a DVD title AC 3 or DTS audio with a software DVD player if you have an external AC 3 DTS decoder you can choose this item and also S PDIF output in the player s audio setting to deliver out AC 3 or DTS data Otherwise you should connect analog speakers and select 5 1 speakers mode in that player and the software will automatically decode AC 3 DTS to 5 1 channel PCM format before output to your speakers For Instance WinDVD Player Audio Setting Page Properties General Audio Display Parental Control Audio channels Curre
35. uideline of how to use the audio features 3D Audio 3D Audio Configuration is C Media s 3D audio setting panel with that Configuration you can control basic audio configuration After finishing the installation of the driver and rebooting the system you can find the panel from two places 1 The system tray in the right bottom of your screen You can click right button of the mouse on it to get an audio related pop up menu as follows Open 3D Audio Configuration Open Microsoft e Volume Control Volume Control Microsoft e Sound Recorder Windows Media Player Microsoft s Media Player Sound Recorder Multimedia Properties 30 Ja Configuration AF cap 30 Pe Microsoft s Multimedia Properties Unload 3D Audio Configuration Copyright 2003 2004 C Media Inc All Right Reserved 15 http www cmedia com tw http www Xear3D com Ccren Xear 3d sound Technology PLECTHORIGS ING C AMLUDIA 3D Audio Configuration Audio Config to open it Control Panel File Edit CA Dach Address Help Ki O Search m G View Tools e Favorites ah ah RK Control Panel ea Switch to Category view See Also CMI Audio windows Update Config e Help and Support Metwork Connections 3 Scanners 4 Cameras Copyright 2003 2004 C Media Inc All Right Reserved 16 DEE Add Hardware C Media Xear 3D UDA Driver User Manual Rev
36. ver User Manual Rev 1 1 Cep Kear 305 sound Technology O40 DIA CLECTHOHIES ING Revision History Revision Applicable Driver Description Version 1 0 11 15 02 UDA After V 025 Preliminary 1 1 02 25 03 UDA After V 029 1 Revision based on UDA V 029 driver 2 Describe output channel specification for analog input Copyright 2003 2004 C Media Inc All Right Reserved 2 http www cmedia com tw http www Xear3D com C Media Xear 3D UDA Driver User Manual Rev 1 1 Comp keacit sound Technology Table of Contents e BS Te d de Te Ui Lei d Le DEEN P 5 lt What is WAIVE Fi ceantrtncenncecdvedand dovsunastwmenddcnaenadvwttdacdvpenndedeeedigusentaneiandenboerdbiadinduenes P 6 lt What Chips are Applicable tohow cc ccc cece cece eee e eee eee e eect eeeeeeesagnnageegeeaaaeaeaeaneeenses P 6 2 Feature e E EE P 7 gee cae es E fae ee ee ee ce en ee ee eee ee ee ee ee ee P 7 V Driver Function VIGGEN ixissavsccvsencexucciesessassauxsenseerssuesessdapexennensacwowessncasswsnsdsswestaksesenss P 10 3 Audio H W S W and Speaker Setup see KKK E KEEN KEE KEE KKK KKK KENE EE EE e P 11 4 User Interface FUNCTION DE SCLiptlON cccccccccccccccssennnneeeeeeeeeeeeeeseeeennnneeeneeeeeeenes P 15 SULFITE Os EE P 15 OP CR te TT EEN P 17 ET E EE P 20 gee lg F en ere E A eee en ee ee ee eee P 23 lt Microsoft Volume Control P 25 lt Microsoft Recording KEE n gekekaeggAegeta ege deeg Eege gr Seed AN Ed ege A ed d EEete g P 28 Cf Ta
37. w C Media driver has lots of advanced new features especially the deployment of Xear 3D sound technology Xear 3D Sound Technology is a code word of C Media killer solution for 2 channel virtual surround adjustable multi channel sound field What is Xear 3D Advanced Considerate and innovative listening mode amazing sound effects and 3D positional Enjoyable Audio Killer audio that is now delivered by the new UDA driver Xear 3D is a not Solution only advanced but also considerate and enjoyable audio package to users It currently includes the following exclusive core features but not confined to these in the future With Virtual SPEAKER SHIFTER you don t have to worry about the speaker types 1 5 1 Virtual SPEAKER SHIFTER and their placement any more Users can enjoy multi channel surround sound using any kind of appliances including earphone we call it 5 1 Xearphone feature 2 2 1 to 5 1 speakers V Provides a user friendly interface for shifting virtual speakers just like moving the physical speakers literally to break through any spatial placement limitation Copyright 2003 2004 C Media Inc All Right Reserved 7 http www cmedia com tw http www Xear3D com C Media Xear 3D UDA Driver User Manual Rev 1 1 Zrert Xear 3d sound Technology eer river User Manual Rev You don t need rear speakers lt Users can adjust the best sound field dynamically adapted to enjoy multi channel or to diff
38. ware Audio Software Just put the support driver CD into your CD ROM DVD ROM to install the C Media audio driver software Please also refer to the Guide from your system vendor Copyright 2003 2004 C Media Inc All Right Reserved 11 http www cmedia com tw http www Xear3D com fr EF Xe ar ay a C Media Xear 3D UDA Driver User Manual Rev 1 1 Speaker Setup 1 6CH Audio Chips CMI9739 A CMI8738 6ch CMI8738 MX CMI18738 LX etc If the audio chip on your system supports 6 channels output it means you can set up a 5 1 speaker system to enjoy real 5 1 surround sound when playing DVD movie titles like the figure below The subwoofer only has low frequency effect LFE instead of broadband audio frequency and hence it s often called the 1 speaker Please connect the speakers to the correct jacks referring to the jack function description in the audio configuration panel 5 1 Speakers Jack Function Description Audo Jacks Speaker Test Sub woofer l a Line Dut Front Speaker Out Rear Spesker Out L CenterSubwooter Speaker Out However if you only have usual 2 or 2 1 speakers or it s not convenient to set up the rear speakers in your room how do you enjoy multi channel Copyright 2003 2004 C Media Inc All Right Reserved 12 http www cmedia com tw http www Xear3D com fr EF Xe ary a C Media Xear 3D UDA Driver User Manual Rev 1 1 surround sound We strongly recommend yo
39. ww Xear3D com Copyright 2003 2004 C Media Inc All Right Reserved gt http www cmedia com tw C Media Xear 3D UDA Driver User Manual Rev 1 1 Comp Kear 305 sound Technology C Media designs the driver of audio chips using Universal Driver 5 p 8 What is UDA driver Architecture that is so called UDA driver UDA driver has a flexible interface so that it can be applied to different platforms and all C Media audio chips The benefits for you are 1 The same driver supports all Windows C Media AC 97 CODEC and audio controllers south bridges on board You can download the free driver from http www cmedia com tw 2 No operation barrier when switching to other C Media s products C Media s UDA driver supports Windows 98 98 SE ME 2000 XP Microsoft certificated and all mainstream south bridges on your motherboards such as Intel SIS VIA NVIDIA amp Ali series What Chips are C Media UDA driver is designed to support all C Media audio chips Applicable to Now including CMI9739 A 6ch AC 97 CODEC CMI9738 S 4ch AC 97 CODEC and CMI8738 series products PCI 6 4ch audio chips At this stage only CMI8738 series need more verification UDA has been ready for AC 97 product series Copyright 2003 2004 C Media Inc All Right Reserved 6 http www cmedia com tw http www Xear3D com C Media Xear 3D UDA Driver User Manual Rev 1 1 GE Kear 3D sound Technology 2 Feature Overvie
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