Asound aw450 - Arx Valdex Systems
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1. How to Listen to C3D Sounds Correctly O Use Headphones to Have Much Better Effects When you use headphones in listening there will be less interference such as outside noise or room reflections comparing to using speakers Choose Correct Output Device Choose the correct output device in the options of demo program in accordance with what listening device you want to listen to Because listening through speakers must be proceeded by crosstalk cancellation if you choose the incorrect output device there won t be any 3D positional audio effects Locations of Speakers Creas ialk Cancellation If you listen from speakers please do not mix up the left and right speakers They must be in equal distance from you That means you the left and the right soeaker must be in the topmost of a right triangle Your position is so called sweet spot In addition the height of your ears and the height of the speakers must be the same amp ST ay H TE Turn Surround Sound Functions off When the surround sound effects are enabled it will cause confusion with C3D sound and make positional sound effects invalid 1 2 EnvironmentFX Sound Effects The killer application of PC is 3D gaming in consumer market and hence EAX Compatible surround sound effects and HRIF 3D positional engine become very important and necessary features to satisfy massive gamers Sensaura EnvirnonmentFX modeling technology2. Sensaura EnvironmentFX is a trademark of Sensaura Ltd Aureal is a trademark of Aureal Inc A3D is a registered trademark of Aureal Inc C3DX is a trademark of CMEDIA electronics Inc All other trademarks and registered trademarks mentioned in this manual are the property of their respective holders and are hereby acknowledged FCC Compliance Statement Certified to comply with the limits for a Class B computing device according to Subpart J or Part 15 of FCC rules The information in this manual is subject to change without notice Please go to AOpen Website to search update information HTTP WWW AOPEN COM TW 1 AW840 850 Series Audio Chip Advantages 1 1 C3D HRTF Positional Sound Solution The C3D technology is licensed from CRL Central Research Lab and later enhanced by CMedia It uses an audio filter called Head Related Transfer Functions HRTFs The basic concept of C3D is since we can hear sound three dimensionally in the real world using two ears it must be possible to regenerate the same sound effects from two loud speakers What is HRTF HRTF Head Related Transfer Functions is a set of audio filters which are varying locations of sound effects spatial hearing cues in three dimension measured from the listener s eardrum Using this technology and special digital signal processing to re create spatial hearing cues allow our ears hear a realistic and three dimensional sounds coming from a pairs of loud speakers
3. Put your speakers the way the following picture suggests so as to avail yourself of the optimal audio results L Front SPK R Rear SPK The mixer setup There is a 4 speakers option in the volume control of the mixer When you enable this option it means the rear speakers are connected to Line in Rear jack When Line in Rear jack is connected to other external Line in sources please DO NOT enable this option in order to avoid hardware conflicts Regarding rear speaker option you can turn on or turn off the output of the back speakers and adjust the volume to have the rear front speakers have the same output volume The HRTF demo The HRTF demo is the Helicopter demo with C3D HRTF Positional Audio When the helicopter flies behind you the rear speakers will work Multi Channel Audio Demo is a wonderful demo of 4 speakers system as well you can use it to find out whether or not the positions of your speakers are correct Appendix B SPDIF I O Function S PDIF Sony Philips Digital Interface is a standard audio transfer file format It s usually found on digital audio equipment such as a DAT machine or audio processing device S PDIF interface allows the transfer of audio from one file to another without the conversion to and from an analog format which could degrade the signal quality The most common connector used with an S PDIF interface is the RCA connector and optical connector Optical Module DIP SW Settin
4. Sweet spot limitation semi actual and semi virtual 3 dimensional audio environment Headphones Use HRTF to create a Low cost Front effect semi actual and Rear effect comparatively weak semi virtual OK Discomfort in 3 dimensional audio long time wearing environment Once audio can more realizes and various people will ask it to upgrade to fulfill sense of they hearing Not only get 3D positional and environment sound effects but also to feel reality and have a great impact on their experiences to be personally on the scene Therefore 2CH stereo Surround sound to switch multi channel sound system and application HRTF 3D technology on multi channel system like 4 or 5 10H mode This cloud enlargement sweet spot and construction an comfortable listening quality left a right listener left surround right surround General Description Use HRTF technology with 4 or 5 actual speakers to create a 3 dimensional encompassing listening environment pO Major Benefits Sweet spot enlargement comfort and ease in 4CH Speaker System listening Good output quality for both front and rear 5 1CH Home Theater Sweet spot enlargement comfort in listening Speaker System Good output quality for both front and rear Additional spatial effect reinforcement for front center output To create the listening environment with actual soeakers seemed perfect in the first place but again problems ensued First the
5. do the recording as well 34 Appendix D Recording From SPDIF In The optical module can be connected to SPDIF IN device such as the portable CD ROM player the CD ROM drive the MD Player to name a few The Windows application and the MP3 Wave player can be used to do the recording of the signal from SPDIF IN The recording steps are as follows STEP 1 Use optical fiber or coaxial to connect the sound card and SPDIF IN device See also Appendix C 2 Input STEP 2 Execute MP3 Wave Player In Setting dialog select 5 Vp p Optical or 0 5 Vp p Coaxial STEP 3 In Wave Recording dialog you should select the recording format and SPDIF IN recording channel Then input the file name Before recording please turn on your SPDIF IN device and start to playback Finally press Record to start the recording process 35
6. files include wave MP3 and MPEG 1 encoding files 21 Previous song Loads the previous audio file of playlist If current file is the first file the last one will become the current selection Next song Loads the next audio file of playlist If current file is the last one the _ first file will become the current selection Sound effector You can use this function to modify the special effect of the song being played Currently these effectors can only be used for 44 1 KHz 16 bit format 9 Recording You can use this function to record a wave file from any recording ss channel 22 Marr Hee 1h LE EE RE J da bk AGE Siss 170 ree Setting You can use this dialog to set the playback parameters and the status of SPDIF IN OUT For more information of SPDIF please refer to the Appendixes C and D 23 6 Multi Channel Audio Demo AW840 850 Series PCI Based C3DX Audio Chip provides many advanced functions such as gt HRTF based CRL 3D extensional positional audio API compatible with Microsoft DirectSound 3D and Aureal A3D API gt Supports rear side speakers gt C3DX positional audio in 4 6CH speakers mode 5 1 CH DVD AC 3 home theater available gt Compatible with EAX Environment Audio eXtention gt KARAOKE ascending descending keys Echo gt Supports Center Subwoofer side speakers for chip model 039 and the following models To let everyone av
7. utilities path you want to install the file in Program will expand the file to the path you ve specified OlInstall program will add initial drivers into AUTOEXEC BAT file 3 2 Win95 98 98SE ME 2000 XP Installation AOpen audio device driver and software media application provide much more than your imagination When you insert installation CD set up program will automatically pop up installation dialog box and user can follow the program step by step to completed set up Olnsert installation CD OSet up program will pop up dialog box as follow You can select to install driver and application of them AME40 Main Menu EAN G Fr GN Apaliratrer B none Lil Te Wengi a P Te i es ev Gui To install Application User can choose favorite language Choose Setup Language x ey Select the language for this installation from the choices below This dialog box was reminded you some information about agreement Jr knr OG Select folder to set up program Recommend select as default setting eli F im ji rn Tyrke 10 Lu EPP ire Setup program will extract Microsoft DirectX and Direct media components Exhracliag rumime support component O After copy and extracting set up program will install device driver and this step will take some time please be patient Please pres Tera to ot ee ee ee felle Te Copt h Te Bei Wie for gach rer is be rea AAT 00 0 Pee o
8. was one of world famous EAX Compatible surround sound effects It s refers to the way in which sound travels to the listener s ears in a particular acoustic environment such as a room A sound generated within a room travels in many directions Somewhat later he or she hears a number of discrete echoes caused by sound bouncing once off nearby walls the ceiling and the floor Distribution of direct and reverberant sound in a typical room To simulated the various sound effects in different distances spaces and mediums of the real world Take a close and spacious room for instance human ears will hear lots of reflection and echo in addition to the sound source The results will change according to different environments gt Direct to reverberant sound ratio gt Room Size gt High frequency cut off gt Early reflection level gt Reverberation Level gt Reverberation amp Frequency decay time gt Density gt Diffusion gt Detuning There are currently hundreds of PC games that use EAX compatible surround sound effects and HRTF 3D positional audio The most popular games almost need to support above function effects These will make 3D game more realize and to vibrate every 3D gamer Defects of 2CH HRTF 3D on PC Application General Description Advantages Disadvantages Speakers Use HRTF with Low cost Rear effect crosstalk cancellation Front effect comparatively weak X filter to create a OK
9. 0 cm between direct sound and reflection The effects are most important for side positioned sources especially for height effects where the shoulders tend to mask sources which move below about 30 degrees depression Local Room Reflections In simulations it is clear that the incorporation of first order simulated room reflections can help in the creation of sound images which have a solid nature However the effects if accurately simulated are relatively slight Experience has shown that it is primarily the quality of the HRIFs themselves which determine the quality and solidity of the sound image The further addition of second order reflections does not help significantly because in reality there are a great number of reflections in the average room A method which does help to recreate the acoustic experience of a room however is to use approximate simulations of lateral reverb using either 2 or 4 laterally placed virtual sources at say 70 degrees and 80 degrees azimuth gt The quality of the sound image relates to the HRTFs used gt The quality of the room image relates to addition of reflections and reverb Psychological Cues There are clearly psychological cues present in every day s life which work together with the audio cues For example if you hear the sound of a helicopter flying you expect it to be up in the air not downwards If a dog were barking nearby you would expect it to be downwards
10. AW840 850 Series Audio Card User s Guide Rev 2 1 2002 07 02 TG ELG ON EEE EE EEE EE 2 1 AOpen AW840 850 Series Audio Chip Advantaqges x rnnnnnnnnnnvnnner 3 1 1 C3D HRTF Positional Sound SOMMON ose cntennnncemnanter samen cietaumannesdanes 3 1 2 EnvironmentFX Sound ENGI sicciicec stuns snesveeestvererveriansawecthuvensansenns 5 ad VS ne ee ne eee eee ae aes 8 3 Installation Uninstallation Procedure x xnnnrnnnvnnnnnnnnvnnnnvnnnennenvnner 9 4 AOpen Power ME Led 14 5 Windows Applications Audio Rack nnrnnnnnnnnnnnnnnnnnnnnnnnnnnvnnnnnnnnn 18 6 Multi Channel Audio Demo runnvrnnnvunnvnnnnvunnnevnnvnrvnnnennnevnneennnevnn 24 Appendix A The 4 Speakers System xnrunnrnnvnnvvnnvnnvnnnennvnnvnnnvvnner 30 Appendix B SPDIF I O Function nnnrunnvennnennnvvnnnvnnnevnnnevnnvennnrnnnne 31 Appendix C Solution For Mini Disc Players nnnnnnnnnnnnnnnnnnnnnnnennnnn 32 Appendix D Recording From SPDIF In unnvennnvennvennneunnnnunnvennnennnre 35 Preface The manual is a user guide for using AOpen AW840 4Ch 850 6Ch Series PCI multi channel audio device correctly and it also provides the overview of the versatile product features and value added advance audio technology such as 3D EAX etc The document is protected by copyright and all rights are reserved No part of this manual can be reproduced by any form without prior permission of AOpen Inc T
11. For each input signal a control slider regulates the loudness whereas a horizontal slider the balance between the two channels The select button can temporarily select input signal without changing slider positions A button with a lit LED means it is available and vice versa CD Regulates the CD drive audio input level MIC Regulates the input level of microphone WAVE Regulates wave voice playback level FM Regulates the FM music play level AUX IN Regulates the Auxiliary input play level 14 LINE IN Regulates the Line In level SPDIF IN Enables the recording from SPDIF in SPDIF in is mutually exclusive with other input signals Advanced Regulates the advanced settings Advanced Dialog Box gt Advanced SPDIF Sony Philips Digital Interface SPDIF dialog provides a full control over SPDIF IN OUT functions You can use these settings to connect your computer to other pieces of audio device such as Mini Disc players amplifiers etc 1 ar en D To enable SPDIF OUT should be under 2 channel speaker mode since SPDIF standard only supports 2ch PCM audio data If users would like to transmit multi channels audio through SPDIF users should choose AC 3 Dolby encoded format or DTS like DVD titles Users can choose 44 1K or 48K Hz sampling rate of PCM data when using SPDIF Out SPDIF Input Loopback is used for digital in to digital out Monitoring is used for digital in to analog out Validity Detec
12. Playback forward for 10 seconds Playback the current to 10 seconds after Loop Playbacks the tracks over and over again Eject Opens the CD ROM drive to change the audio CD Setting Selects the CD ROM drive which analog output is connected to the Analog CD in of your sound card If your CD ROM does not connect to the analog CD input wire please use device manager to change the property of your CD ROM 19 z Help Shows the help screen for detailed button function descriptions E mout Shows software version and copyright information ron Exit Stops and leaves the CD player MIDI Player MIDI eer can play MIDI files mid rmi and allow you to create your own playlist Current file field shows the number of the currently selected MIDI files File name field shows the file name Total length field displays the total length of the selected file in minutes and seconds Playback time field displays the current playback time Button Function Playlist allows you to insert remove and record the MIDI files into and from the playlist You can save the playlist into a file as well 4 Previous song Loads the previous MIDI file of playlist If current file is the first aa MIDI file the last one will become the current selection Next song Loads the next MIDI file of playlist If current file is the last one the first file will become the current selection gt Playback Starts to playback the current MIDI fil
13. T Pew When finished set up the program will pop up a dialog picture to show multi channel speaker environment User should select which speaker mode he or she wants After whole installation procedure has finish you will need to restart your computer for enable driver and application functions 3 3 Win95 98 98SE ME 2000 XP Un installation Olf you want to remove audio driver or application you can use uninstall function on PCI Audio Application The uninstall program will confirm your step If you want to remove those programs then click Yes 12 3 4 Windows NT 4 0 Installation We recommend that you install Windows NT 4 0 before you install this PCI audio card and you not install any other sound card device drivers in your current system 1 Click Start move the highlight bar to Setting and select the Control Panel 2 Double click Multimedia 3 Select Devices and press Add 4 Select Unlisted or Updated Driver in List of Drivers 5 Specify the drive path where NT drivers are in such as D NT40 DRV 6 Select AW8X0 C MEDIA CM8738 and press Ok 7 Select proper I O value 8 Press OK 9 Restart the system when being asked 10 Now you have already installed the PCI Audio Adapter under Microsoft Windows NT 4 0 successfully if you want to install the Windows applications continue the following steps 11 C
14. Work With Mini Disc Recording MP3 Wave Player is an easy and powerful tool for Mini Disc recording Besides allowing you to create your own playlist it also provides a control interface of SPDIF IN OUT of AOpen s sound card The following 4 steps can help you create your album into Mini Disc easily STEP 1 Using optical fiber to connect the sound card and the MD player MD player will start to do the recording and turning on the SYNC mode See above 1 Output A PC to MD player SPINE Gere Voks Scar Taci Datis Dum Fr IF Fre POF Dhd eek ede om eee ed 2 4 prakt Tammig Ai EF odd Kt Foe Fr Ir PP Leos bet flo deo ol I Hondom fo madog cui D Vaki 0 er Fi F Hom T Aras Der i SPOR iH l 7 or IK KZ M Coppright Protects STEP 2 To execute MP3 Wave Player and modify the playlist You should select those files whose format can be recognized by the MD Player You can also change the sound effects if you like See also 5 1 4 STEP 3 In Setting dialog check Enable SPDIF OUT input the playback delay time and select 5 Vp p Optical Please note that in playback if there is no lapse longer than three seconds between each track the MD player cannot recognize the tracks and will record all of them into one It is recommended that you set the lapse time to 3 5 seconds to meet all type of MD player requirements FT i Lra f STEP 4 Start to play the songs You will see that the MD player starts to
15. ail himself herself of the above functions a user friendly interface Multi Channel Audio Demo was designed with the following functions 04 CH speakers mode including Demo1 and Demo2 EAX Environment Audio eXtention support HRTF based CRL 3D extensional positional audio KARAOKE ascending descending keys Echo and microphone ascending descending keys 6 CH speakers mode including Demo1 and Demo2 for chip models 039 and the following models Speakers and Microphone Connection Before running this demo program to feeling the AOpen s Sound Banquet you have to connect the speakers and the microphone to the correct phone jacks Generally speaking there are four ways for hardware connection sound card and motherboard 24 How to Enable 4 5 5 1 Speakers You have to activate the Mixer program and click Advanced button Then you can open speakers page and selected 4 Speaker 5 Speakers or 5 1 Speakers mode to let the audio driver recognize your rear or _ center subwoofer speakers and have the front rear center subwoofer speakers work The audio driver will activate the audio chip to output different sounds from the front rear center subwoofer speakers based on different playback formats For more information please refer to the 9 AOpen Power Mixer Beside this you can open multi channel audio program and click the TV on home theater graphic picture The program will pop up a di
16. alog box to set up advanced setting 25 SL he ei b ies anal Or r OFF O EE agree E rast KATT 2 Pero C Jipe Peli ight kel warned and aighd arcane 4 od pest ed tater fett gh etpar byi avsi rel arenes OR Eten gre paar ce flott md bet jur md vekene serken rs peeve ri Fa Lu beeps Me Pica bart ch seski O G Spates felt mykt left pagan moh var hent order ard sr pest 15 W En F Tipna amd Comcari Hel KAM The HFF fa ies EAH ard ECHI heros Lm oa How to Adjust the Microphone Volume You have to use the microphone when availing yourself of the Echo function If the microphone is on and is very close to the speakers it will cause feedback between the two Also unusual high frequencies or buzzing sounds might be heard from the speakers To avoid this you have to adjust the microphone volume in both recording and playback Sometimes you might have to adjust the main and Wave volume as well Please left click the mouse to adjust the microphone MIC in both Volume and Control m ber fi Fi E BEE SE i J pit p rT lJ Carmel N Af Test Your Speakers Connection To make sure that the front and the rear speakers are correctly connected you can use the following program to testify individual speaker output Move cursor to whichever speaker you want to test and left click the mouse If the setup is correct you can hear music coming
17. and save it in a wave file as well Mixer controls the volume level of your audio inputs and outputs Showing or Hiding Audio Rack Components To show or hide a component from the display click the component button s listed on the top CD Player CD Player Plays standard audio CDs and allows you to create your own playlist 18 Current Track field shows the number of the currently selected CD track CD title and track name field shows CD title and track name You can modify CD title and track name in Playlist function Total length field displays the total length of the selected track in minutes and seconds Playback time field displays the current playback time Button Function Playlist You can select or move tracks of audio CD from and into the playlist The title of CD and the name of tracks can be modified as well Playlist dialog will save and show them automatically when you want to play the same CD aud O OOOO E w mm Previous song Loads the previous track of playlist If current track is the first track the last track will become the current track Next song Loads the next track of playlist If current track is the last track the first track will become the current track Playback Starts to playback the current track Pause Restart Pauses or restarts the current playback action Stop Stops playback Playback backward for 10 seconds Playback the current to 10 seconds before
18. clude that it is the combined effect of the pinna convolutions which creates the various localization cues and it is not valid or logical to attempt to assign particular spatial capabilities with individual physical features Scapa Elevated scarce Conrcha kn nsemmnsnnennonmnsnennenn KEN a Depressed source External canal Il Spatial Hearing Secondary 3D cues Shoulder amp Local Reflections In addition to the primary 3D sound cues IAD ITD and pinna effects there are several additional cues which do contribute to the localization capability these will be referred to here as secondary cue and include should torso reflections local room reflections and psychological cues O Shoulder Torso Reflections The presence of a torso attached to an artificial head has the effect of increasing the pressure in the vicinity of the ear up to frequencies of around 2 kHz The effect is greater for frontal sources than lateral sources In the experience the presence of the torso does not appear to contribute much to spatial accuracy However shoulders are located very close to the ears and their effect is greater this time in respect of lateral sounds If one listens to an artificial head first without and then with shoulder fitments then it is clear that the shoulders do contribute to spatial effects in certain positions The shoulders provide a strong reflection from lateral sources with a short path length of around 1
19. ctSound 2D and 3D to playback their music Virtual 5 1 option will try to simulate surround sounds even your digital audio sources are only 2 channels Advanced Options Options dialog provides a hot key setting to control the Mixer in an easy way Please note that this might affect other applications if you use the same hot key setting Please use Load Mixer Defaults to change all settings to default values Enable Microphone Booster will enable 12dB microphone input signal gain 17 5 Windows Applications Audio Rack Audio Rack for WDM driver By means of a user friendly interface as easy as operating your home stereo system this PCI audio rack provides you with control over your PC s audio functions including the advantage of 4 6 speakers mode enable disable and perfect digital sound SPDIF input output control Control Center Control Center Controls the display of the PCI Audio Rack components This Audio Rack consists of several major components i I CD Player can play standard audio CDs and allow you to create your own playlist MIDI Player can play MIDI files mid rmi and allow you to create your own playlist MP3 Wave Player can play mp3 wave and MPEG 1 files It provides EAX and equalizer to improve the sound effects when you playback the audio files If you want to sing a song MP3 Wave Player also provides a Karaoke function MP3 Wave Player can record input signals
20. e T Pause Restart Pauses or restarts the current playback action 20 z Stop Stops playback 4 4 Playback Backward for 10 seconds Playback the current to 10 seconds ae before Playback Forward 10 seconds Playback the current to 10 seconds after Loop Playbacks the MIDI files of the playlist over and over again Setting Selects the output device you want to use to playback the MIDI files ka Feis Hidu Deore rem vea og me Help Shows the help screen for detailed button function descriptions D about Shows software version and copyright information KN Exit Stops and leaves the MIDI Player MP3 Wave Player MP3 Wave Player can play mp3 wave and MPEG 1 files It provides EAX and equalizer to improve the sound effects when you playback the audio files MP3 Wave Player can record input signals and save it into a wave file as well Current file field shows the number of the currently selected audio files in the playlist Frequency display field shows the frequency distribution Total length field displays the total length of the currently selected file in minutes and seconds Playback time field displays the current playback time File name and status field displays the file name audio format sound effects selection playback mode Karaoke mode and SPDIF status Button Function Playlist Playlist allows you to insert remove and record the audio files into and from the playlist The audio
21. from that speaker alone Each music output is different for distinction 26 You can move your mouse on any speaker which at the graphic user interface When you click speaker then its will sound from correct channel Demonstrations AOpen provided three music melodies which are specially designed for Multi channel speakers system demonstration Select Music by left clicking the mouse Sit back and relax and let the music take control How was it like Isn t it fantastic If you don t have multi channel speaker system hurry up and buy yourself one right away EAX Monotonous footsteps generate distinctive sound effects in different environments In this Demo you can hear a lady wearing high heels walk in different surroundings generic environment bathroom sewer pipe and underwater Left click the mouse to activated this Demo and feel the differences 21 IHATF Echa HRTF HRTF stands for Head Related Transfer Functions and it is a set of audio filters varying locations of sound effects spatial hearing cues in three dimension measured from the listener s eardrum This technology and special digital signal processing are used to recreate spatial hearing cues making our ears hear realistic and three dimensional sounds coming from a pairs of loud speakers or headphones When you activate this Demo you can simply shooting fire missile and fly helicopter Stop E gt A 28 Echo Like to
22. g OPTICAL MODULE i 3 CMI8738 PC1 40CH AUDIO CARD DIP SWITCH OPTICAL OUT OPTICALIN FUNCTION a lg SIGNAL NOT INVERSE Default OFF SIGNAL INVERSE For some special MD or DVD player gt ON OFF SIGNAL FROM OPTICAL OFF ON SIGNAL FROM COAXIAL OR CD ROM DIGITAL OUT OPTICAL OUT OPTICAL IN OPTICAL MODULE DIP SWITCH SETTING 31 Appendix C Solution For CD amp Mini Disc Players The MP3 player has been catching people s attention ever since its debut as this pocket size player provides people with a more convenient access to the MP3 music enjoyment in the past it requires a PC to play MP3 music Free download from the Internet coupled with the easy to carry size prompt many people to purchase a MP3 player with 64M bytes flash RAM capable of playing music for sixty minutes Nevertheless the MP3 player is not that convenient as imagined First if the users get tired of the stored music they have to go back to their PCs for new download it will cause inconvenience if they are out for travel and have no access to the Internet Even if a flash RAM can be added to the MP3 player for memory extension still a problem exists That is who wants to spend nearly USD100 in order to save 5 songs titles With the same budget USD200 isn t there a better solution for the MP3 player MD Mini Disc player is the answer The MD player has been available at the consumer electronics market for a
23. his PCI Audio Adapter offers a new generation PCI audio solution it utilizes the state of the art CRL 3D Audio technology HRTF 3D positional audio and supports Microsoft DirectSound 3D and Aureal s A3D interfaces Better yet it supports 2 4 6 speakers and DLS based Downloadable Sound wave table music synthesizer which supports the DirectMusic Besides being legacy audio SB pro compatible and providing professional SPDIF IN OUT non distortion digital interface it also supports MPU 401 interface dual game ports etc What we provide at the side of the sound card is line in rear speaker jack microphone jack audio output jack SPDIF OUT jack and 15pin D SUB multiplexed joystick MIDI connector Moreover this PCI audio solution supported Sensaura EnvironmentFX sound effects to compatible with EAX 1 0 amp 2 0 specifications The environment modeling technology takes PC audio to the next level of realism Not only the sounds themselves but also the acoustic contribution of the environment envelop the listener and give vital clues about the positions of sound source EAX surround sound effects and HRTF 3D position engine to make the popular application 3D gaming perform more realistic by high quality hardware support to satisfy numerous PC gamers Trademark Acknowledgements Microsoft Windows DirectSound 3D and DirectMusic are trademarks of Microsoft Corporation Sound Blaster is a trademark of Creative Technology Ltd
24. lick Start 12 Select Run 13 Key in drive path where the Windows NT application installation program are in for example D NT40 APP SETUP EXE 14 Click OK to start the installation procedure and follow the on screen instructions to complete the installation When all of application software has been installed shut down the Windows NT system and then reboot your system 13 4 AOpen Power Mixer O Volume Control For each output signal the control slider regulates the loudness whereas a horizontal slider the balance between the two speakers The mute button can temporarily stop the output without changing slider positions A button with a lit LED means the output is available and vice versa Several output signals can usually be enabled at once Volume This is the master control over all outputs The power of an outputRe signal is determined by both of the volume slider and the slider for the individual output To modify all the outputs adjust the volume slider To change individual output s adjust its their slider s CD Regulates the CD drive audio input level MIC Regulates the input level of microphone WAVE Regulates wave voice playback levels MIDI Regulates the MIDI music play level AUX IN Regulates the Auxiliary input play level MONO IN Regulates the Mono input level LINE IN Regulates the Line In levels Advanced Regulates the advanced settings Recording Control
25. or headphones There are several listening cues which allow us to hear sounds three dimensionally I Spatial hearing Primary 3D cues IAD The head shadowing effect creates differences in the amplitudes of the sound signals arriving at each ear from the source The effects of diffraction are most noticeable in the range between about 700 Hz to 8 KHz where the A and S functions periodically converge and diverge gently This Inter aural Amplitude difference IAD is one of the primary 3D sound cues g Bespin i 800 25 2155 L Zi I AD Lzimuihe Fergus i KHE ITD In addition to the IAD there will be a time of arrival difference between the left and right ears unless the sound source is in one of the pole positions i e directly in front behind above and below This is known as the Inter aural Time Delay ITD ti pee a 6 d P Pinna Effects lt has been assumed by some researchers that the convolutions of the pinna create the spectral features which constitute the height cues In practical experiments by Gardner in which different parts of the pinna were occluded and then the ability of a number of subjects to identify sound source positions at different heights was tested it was shown that the different features all contributed by different amounts For example if the fossa is excluded then height localization capability is impaired but not totally extinguished It would be reasonable to con
26. ows 98 98SE Windows ME Windows 2000 Windows XP and Windows NT 4 0 Linux BeOS etc gt MPU 401 Game Midi port and legacy audio SB Pro support gt Downloadable Wave Table Synthesizer supporting Direct Music gt Professional digital interface supporting 24 bit SPDIF IN OUT Hardware 44 1K and 48K in out For AW850 Pro only gt Microphone echo and Karaoke ascending descending key effects gt Single chip design digital power 3 3V analog power 5V 128 pins QFP Digital Audio SPDIF IN OUT gt Up to 24 bit stereo 44KHz sampling rate voice playback recording gt Full duplex playback and recording 120dB audio quality measured gt Auto detectable SPDIF IN signal level from 0 5V to 5V 120dB audio quality in playback recording and bypass modes Stereo Mixer gt Stereo analog mixing from CD Audio and Line in gt Stereo digital mixing from Voice FM Wave table and Digital CD Audio gt Mono mixing from MIC Software adjustable volume Game and MIDI Interface gt Fully compatible with MPU 401 Midi UART and Sound Blaster Midi mode Standard IBM PC joystick game port dual channels 3 Installation Un installation Procedure 3 1 DOS Installation Before the installation please make sure that your hard disk has sufficient space min 4MB Insert the Driver CD into the CD ROM Drive OChange directory to PCI audio DOS drivers folder ex D DOSDRV at DOS prompt and type INSTALL Enter Type the DOS
27. period of time and its popularity keeps growing in places like Japan Hong Kong and Europe Each MD player is capable of storing high quality 74 minute music and one blank MD costs less than USD2 00 4 00 More importantly the most high end 24 bit MD player costs around USD200 Since there is no expensive memory design there is room for the MD player to drop its price Compared with the MP3 player the MD player surely got the upper hand The MD player is destined to be a hot seller nevertheless there is one big problem with the MD player application That is the MD player cannot be directly connected to the PC To remove this obstacle AW840 850 Series offers an excellent solution the optical fiber interface The optical fiber interface within the sound card can provide easy access to people who want to digitally record the MP3 music on their PC to the MD player The optical fiber interface offers two applications the output and the input The Output gt PC to MD player this includes CD audio to MD player WAV to MD player and wave table music to MD player CD ROM DIGITAL OUT TO SPDIF IN 32 gt PC to AC3 decoder or DAG SJT AF norr The Input gt The MD player to PC the optical in can accept digital audio from the desktop MD player or high end CDs and store it in 24 bit WAV format OPTICAL IN OUT LINK TO MINIDIGGC DECK gt Hi end CDs to PC with optical out 33 Using MP3 Wave Player to
28. re must be extra space for rear speaker arrangement you don t want 4 or 5 speakers buzzing right next to your ears do you Second how to fix the rear speakers No matter to wall mount them or put them on tripods is somewhat technically challenging to the general public Third how to cope with those long and winding wires for the rear speakers Try to think how many times you ve been stumbled by those wires For reasons above mentioned peoples need a wonderful multi channel audio solution Not only solved these problems but also reserve all advantages with multi channel sound system especially direction of HRTF 3D audio and virtual reality environment sound effects Furthermore the earphone like solution should allow the listener to perceive the front signal at the same time and no more discomfort in long time wearing To find a perfect balance between user friendliness and 3D positional audio quality 2 Product Specification Special Features gt AW840 L is a 4 Channel Sound Card WITHOUT SPDIF IN OUT gt AWB850 L is a 6 Channel Sound Card WITHOUT SPDIF IN OUT gt AW850 Pro is a 6 Channel Sound Card WITH SPDIF IN OUT gt PCI Plug and Play PnP bus interface 32 bit PCI bus master gt Full duplex playback and recording Built in 16 bit CODEC gt HRTF based 3D positional audio C3DX for earphone and 4 6 CH speakers output supporting both DirectSound 3D amp A3D interfaces gt Comprehensive driver support Wind
29. sing along with Karaoke It might occur to you to use your PC for this However when you turn on the microphone play the song and ready to sing you see that the effect is not as good as expected Why Echo is the answer To help you solve this problem this demo is designed to include the Echo function Please left click the upper right of the demo screen as shown below and choose your own music file to play Please note the file type has to be MP3 file Please left click Echo to activate the function For pitch adjustment please use I and keys on the keyboard For microphone pitch adjustment please use and keys on the numeric keyboard To resume the original please use lt and keys 29 Appendix A The 4 Speakers System This audio adapter provides 2 wave channels front rear known as the 4 speakers system When games or application programs locate the sound sources via DirectSound 3D or A3D interface to the listener s back the two rear speakers will work to enhance the rear audio positional effects so as to complement the insufficiency of using only two front speakers The following is the hardware installation and the software setups The installation of your front and rear speakers Connect the front speakers to the Line out jack of the audio adapter and then connect rear speakers to Line in Rear jack of the audio adapter The original Line in can be moved to Aux in The positions of the speakers
30. tion is for data validity correction check Format option is reserved for input digital data phase inverse since some source data may has reverse phase Device option is for choosing SPDIF input channel 8738 supports two SPDIF In channels The Copyright Protection is to enable SPDIF Copyright bit Then recording copyright protected input data will be not available For more information of SPDIF please refer to the Appendixes C and D Sie ri E peaa PDF hi spel o om pp ard 2 See er Tpi Far HETEN wou aga r T tye Det tar aiki Aral C Aram Debra T SPOR Ail CSP 2 T Dpi Pees 15 Advanced Speakers General Mode Speakers dialog box provides an interface allowing you to set your speaker mode AW840 850 Series supports earphone 2ch 4ch and 5 1ch mode 1 The Configuration tag shows the speakers figure corresponding to your setting 2 The Phone Jacks tag shows the correct phone jack configuration for your Motherboard sound card First you should make sure what type your speakers are and what the correct configurations are You can always refer to this to make sure whether or not the connections of your speakers and plugs are correct 16 Advanced Sound effects Sound effects dialog allows you to modify the special environment sound effects of the song and game being played Currently these effectors can only be used for the player or the game which utilizes Dire
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