PRODUCTS
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 GritTec's
Noise Cancellation
Overview
GritTec's
Noise Cancellation (Version 2.00) of speech enhancement is used for reducing the external hindrances and background noises in speech signal.
GritTec's NC can be used as for the selection of speech signal, so and for the selection of
background noises.
GritTec's NC is recommended to use in case of an amount of hindrances is unknown beforehand or it is impossible in the evident type to select "point" source of hindrances (absent-minded hindrance).
Filter noise cancellation is automatically adapted under all types of surrounding hindrances and selects a refined of speech signal.
GritTec's Noise Cancellaion 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;
- suppression of industrial noises;
- suppression of channel distortions and noises arising in a
consequence of coding and transfer of a speech signal on analogue and digital communication channels (VoIP);
- suppression of other broadband noises.
Applications
- Wireless telephony systems;
- VOIP telephony;
- Voice messaging services (voice mail);
- Mobile phones or without “hands free” system;
- Call service centers.
Features
- High quality of speech enhancement;
- Low level of speech distortion;
- Operation with low level SNR;
- Separation as cleaned speech signal, so and background noise;
- Three modes adaptation to background noises;
- Controlled level of noise suppression in speech, including broadband color noises up to - 60 dB;
- Possibility of using a graphic equalizer for removing the stationary hindrances;
- Easy integration with target applications.
Signal requirement
- Signal format: 16-bits linear;
- 6 kHz, ..., 48 kHz sampling rate.
Availability
- PC demo for MS Windows;
- SDK for win32, win64 platforms with object code or ANSI C++ float point code is available on request;
- Portability to any DSP or ARM platforms.
For more information, please contact us via Online Request Form.
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