User Manual
Contents
1. ATC Labs Audio Technologies and Codecs AutoAudioDenoiZer User Manual System Requirement Operating System AutoAudioDenoizer is currently available for Windows XP and Windows Vista operating systems Hardware Because of high processing requirement we recommend a high end PC Server for running the AutoAudioDenoizer For example a Dual Quad Core processor with clock speed of 2 2 GHz or higher or a single core Pentium with a clock speed of 3 6 GHz or higher is recommended System RAM of at least 1 GB is recommended Audio Hardware AutoAudioDenoizer has been tested with a variety of professional and consumer grade sound cards with both digital and analog inputs As described in other sections of the user manual it automatically detects all available sound input output options present in the system and lets the user select from the available options Quick Start The quickest way to getting started with AutoAudioDenoizer is 1 Run the AutoAudioDenoizer exe to start the application 2 Select the input output devices using the drop down menus the default devices are already shown selected If the selected input is an audio device you will be prompted for an additional selection of sampling rate currently AutoAudioDenoizer supports two sampling rates 44 1 kHz and 32 kHz 3 Select the Profile from the drop down menu Default is shown selected 4 Press the Play button Important Note for Windows Vista Users Vista users may need to g2. O 8 Record 2 Gyn TWO E Record 3 ftynz TA H Record 5 fiynz TWO H Aetord B Myra 4 8 Record T dyra TAD Record 8 Giyns TWO B File gp wA Play d oyri TWO CyberLink Audio enderer Defuualt Wire Chat Dese Play 2 Eri TW O E Play 3 Lyra TAA O En Play 5 Lyr TWO E Play b lyr TWO En Play 7 Lyra TADE Play E Lyr TW Speakers Lyra TWO Ir omm M File a
3. e from a storage disk or could be fed in live from an audio card The supported sampling rates for the input are File Based Input Only Wave format wav files are supported in this mode At this time mono files are not supported please convert mono files into stereo before processing Audio Card Input The software automatically detects and lists a set of sound cards installed in PC On choosing a desired sound card the audio could be fed in directly from the input and be processed real time Output The output of a processed audio could be stored in a file or could be fed out in real time to an audio card File Based Output Only wave format wav files are supported in this mode Audio Card Output The software automatically detects and lists a set of sound cards installed in PC On choosing a desired sound card the processed audio is fed out real time Profile Profile options allow users to save a specific set of parameters to customize the AutoAudioDenoizer for their own specific usage Save a Profile Save a profile after customizing the parameters of AutoAudioDenoizer i e after setting the required parameter value for WANR ICS DLFR and Hum removal The profile could be saved under a profile name Load a Profile Any saved profile could be loaded by a simple point and click from the list under profile tab Remove a Profile A saved profile can be deleted by using remove profile option Description of Preset Profi
4. eduction This module conditions temporal envelope in multiple frequency bands To smoothen the audio the dial value should be at high end and to let in more dynamics dial value should be at lower end The 10 vertical bars below the dial provide finer control over envelope conditioning in individual frequency bands with indicated center frequency values The higher the sliders the smoother is the audio in that band There are two associated slider controls which control respectively the tonal characteristics of overall audio and the refinement level of envelope conditioning For a novice user good initial setting for all the DLFR controls may be found by selecting the Music GeneralPurpose Light preset profile from the profile menu The other controls like WANR and ICS may then be modified while maintaining these values for DLFR control HUM REMOVAL This module filters any hum at 50Hz 60Hz and optionally a first harmonic To filter the first harmonic the controls 50Hz Har and 60Hz Har should be enabled User Interface 1 WANR Knob 2 HUM Removal 3 ByPass Processing 4 Play Button 5 Start Frequency Controller 6 Speaker Mute UnMute button 7 Volume Controller 8 Pause Button 9 Stop Button 10 Refine Controller 11 Tonal Controller 12 Frequency Band Controllers 13 ICS Knob 14 DLFR Knob 15 Display Selections 15 14 13 12 n j 10 9 3 g 7 6 Record 4 uns TWO 8 Record 1 lpr TW
5. ing tools like ICS and DLFR to enhance and enrich the listener s experience of the audio ICS and DLFR are complex signal processing algorithms based on psychoacoustic principles which smoothen the audio to better a listener s overall experience More information regarding these tools may be found in the Tuning Guide section See Also Display Screen Input Output And Profile Options Tuning Guide Display Screen The monitor has four different modes including three display modes and a display switch off mode The three display modes provide a graphical representation of the input and output signal The display modes include a time waveform mode frequency spectrum mode and a spectrogram mode Every display mode can be viewed for input and output signal as well Accounting this there are seven different display screens in total Time Domain Waveform The graph in time domain waveform is plotted against time msec and amplitude value of the input signal Frequency Spectrum The spectrum displays a graph of magnitude in dB versus frequency values KHz Spectrogram The spectrogram shows a three dimensional representation of the input signal The graph is plotted between frequency KHz and time msec The intensity of each point in the image represents the amplitude of the spectrum at that instant of time Input Output and Profile Options Input There are two methods to feed an input Input could either be from a stored fil
6. les Preset Name Preset Description Pure WANR Light Light noise removal using the WANR wide band noise removal algorithm Pure WANR Heavy High grade noise removal using the WANR wide band noise removal algorithm Music Oldies Light Light noise removal targeted towards 60s 70s music or similar recordings with noise Talk NewsRadio Light Light noise removal for talk news voiceovers type material with occasional music Talk NewsRadio Medium Medium noise removal for talk news voiceovers type material with occasional music Talk NewsRadio Heavy Heavy noise removal for commentary talk news voiceovers type material with occasional music Focused towards cleaning up voice material Music GeneralPurpose VeryLight General purpose very light noise removal conditioning for music Attempts to improve coherence and reduce listener fatigue Relies primarily or ICS and DLFR tools Music GeneralPurpose Light General purpose light noise removal and conditioning for music Attempts to reduce noisiness improve coherence and reduce listener fatigue Relies on light level of AWNR ICS and DLFR tools WANRPlus Medium WANR algorithm in combination with DLFR tool for listener fatigue reduction in addition to noise removal Applied at a medium level WANRPlus Heavy WANR algorithm in combination with DLFR tool for listener fatigue reduction in addition to noise removal Applied at a heavier level Br
7. o to Control Panel gt Sound gt Playback select the device and click on Properties gt Advanced and select the sample rate and bit depth While the bit depth should be chosen as 16 bits the selected rate should match rate of input as selected above The same steps should be repeated for recording devices Distortions in audio like clicks and pops may be heard if this step is not performed In case of any lingering performance issues like clicking distortion etc please contact support atc labs com Beginners Guide to AutoAudioDenoizer AutoAudioDenoizer incorporates four different tool sets Wideband Automatic Noise Removal WANR Incoherent Component Suppression ICS Dynamic Listening Fatigue Reduction DLFR and Hum Removal These four different tools managed judiciously can provide crystal clear pleasant noise free high quality audio and offer the user flexibility for creating a customize signature sound However an expert s work is not required to handle the product satisfactorily The product is designed with a simple and easy to use interface and it should not take more than few minutes for one to master the essential controls after the software installation The main function of the AutoAudioDenoizer as the name suggests is to clean up any noisy audio and to make it free from many kind of distortions like a scratch or a hiss or a hum Apart from its prime functionality i e noise removal the product comes with other audio condition
8. oadcast Auto Broadcast Auto is a profile for broadcast applications in which music and voiceovers DJ voices are mixed AutoAudioDenoizer makes an adaptive decision as to which parameters to use for specific signal segments Tuning Guide This chapter briefs the use of different tools by explaining their functionality Bypass Processing By checking the bypass processing button the processing done in the AutoAudioDenoizer is bypassed This helps the user judge the quality of audio before and after processing instantaneously by switching between modes WANR Wideband Automatic Noise Removal Toolkit The dial runs values from 0 0 to 1 0 A user can choose the level of noise filtering by varying the value of the dial An increasing dial value increases the level of noise filtering in the audio A user who is uncertain of the level of noise for an input can conveniently leave the dial in the 0 5 0 6 range ICS Incoherent Component Suppression This temporal envelope enhancement module modulates the high frequency envelope The dial controls the intensity of application of the algorithm the higher the dial value more the smoothing at higher frequencies The start frequency specifies the frequency threshold above which the algorithm is applied The scale is divided between 3 and 15 KHZ in steps of 1 33 KHz A novice user can set safely set the dial at 0 3 and the start frequency at about 7 9 kHz DLFR Dynamic Listening Fatigue R
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