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GritTec's Dual Microphone Array solution


  DOC Downloads
  SDK Downloads
Datasheet
Abstract of GritTec's Delivery
API Description
SDK under Windows x86/x64, Linux x86, Linux Arm Cortex-A9

Overview

GritTec's Dual microphone array solution (Version 2.10) of speech enhancement is used for the suppression of external hindrances and surrounding noises in chosen direction source of the speech. The sources of external hindrances can be an external noise of car, speech of collocutor, music and any other sounds, coming from directions, different from direction of the chosen source of the speech. Suppression of external hindrances is descended by mean of the acoustical beam-forming - directed directivity diagrams of microphone array. By using acoustical beam-forming techniques, the microphone array can "focus" on the speaker's position.
   GritTec's DMA technology can be effectively applied for:
  • suppression of street noises;
  • suppression of office noises (fan noise, computer noise, background speech and so on);
  • suppression of a various sort of mechanical noises, such as noises of avto-moto technics.

Applications
  • Plane/Car audio garniture (CAR KITS);
  • Hands-free speech communication systems;
  • PC audio/video conferencing.

Features
  • Support 2 microphones configurations;
  • Directional microphones: unidirectional configuration (omni-uni directional);
  • Distance between microphones not less 0.025 meters;
  • Distance to the speaker not less 0.2 meters (up to 5 meters);
  • Choice of a direction of a speech source: hand control (Default: direct);
  • Noise suppression not less 15 db;
  • Low level of speech distortion;
  • Delay of the algorithm: 0 ms;
  • Fast adaptation to changing of external noises;
  • Controlled level of Sidelobe Canceller, up to 60 dB;
  • Easy integration with target applications.

Signal requirement
  • Signal format: 16-bits linear;
  • Sampling rate: 6 kHz, ..., 32 kHz.

Availability
  • PC demo for MS Windows x86/x64, Linux x86, Linux Arm Cortex-A9;
  • SDK with object code or ANSI C++ float point code is available on request;
  • Portability to any DSP, ARM platform.

Online Shopping and Free Downloads
  • All products include a free evaluation period for your first installation only;
  • To continue using these programs after your evaluation period has expired, you can buy a end-user license;
  • Click 'Buy Now' under current product.

The program with GUI interface which is used for the suppression of external hindrances and surrounding noises in chosen direction source of the speech. The sources of external hindrances can be an external noise of car, speech of collocutor, music and any other sounds, coming from directions, different from direction of the chosen source of the speech.

Price: $35.0

MS Windows x86/x64.
Supported signal formats:
Windows PCM, A/mu-Law Wave, Microsoft ADPCM (MS ADPCM), Intel ADPCM (IMA ADPCM), Microsoft ACM GSM 6.10 (ACM Waveform).
This program with GUI interface uses for capturing of audio stream from Skype VoIP program and its postprocessing with Dual microphone array filter for cleaning of initional voice in real-time mode. The program can clean a speech in outgoing audio stream and the incoming audio stream from the network. The program can save into file (*.wav) initial audio stream and audio stream after GritTec's postprocessing.

Price: $30.0

MS Windows x86/x64.
Supported signal formats:
Windows PCM, A/mu-Law Wave, Microsoft ADPCM (MS ADPCM), Intel ADPCM (IMA ADPCM), Microsoft ACM GSM 6.10 (ACM Waveform).


  Other Downloads
Trial Demo (Ver2,10) in console mode (Win x86/x64, Linux x86, Linux Arm Cortex-A9)
Trial Demo (Ver2,00) for TI TMS320VC33 (TMDSDSK33)


For more information, please contact us via Online Request Form.
If you are interested in our product, but you have not found your target platform, send us a request. We will be happy to assist you.