PRODUCTS
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 NEWS & EVENTS
June 16, 2011
GritTec has updated the Noise Cancellation software with GUI the interface for tasks of multi-channels suppression of hindrances and noises.
Suppression of "dot" sources of hindrances and noises in an initial
speech signal is realized at the expense of synchronous recording of
hindrances sources and source of (speech + hindrances), with further
using of Noise Cancellation engine for suppression of absent-minded
hindrances and all remainder of "dot" hindrances.
As a rule, the signal of “speech + hindrances” is recorded in the first channel
and the signals of "hindrances" are recorded in all subsequent
channels.
The multi-channel system of noise suppression is recommended to be
applied when it is in advance known, that the quantity of hindrances
and noise sources is limited, and it is possible to present them in
the kind of "dot" sources of radiation, for example, noise of car
engine, plane, radio or TV etc.
In the new version of the program GritTec's Noise Cancellation with
GUI interface it's realised the two-channel scheme of noise
suppression of the "dot" hindrance because the majority of the PC
computers support sound card with 2 channels of mode recording of
input signal (via Linear Input). However developers of “hands free”
devices can expand the this scheme for suppression of several "dot"
hindrances at using of multi-channel audio codecs.
Suppression of a "dot" hindrance in the program of GritTec's Noise
Cancellation with GUI interface occurs under the following scenario:
1. To set mode of stereo recording.
2. To set mode of channels recording mixing.
3. To adjust the parameters of Noise Cancellation engine.
4. To click button for launching of full duplex record.
Also it is necessary to notice, that in the core of the new version
of GritTec's Noise Cancellation (Version 2.10) with GUI interface it
is put updated engine of noise cancellation -
GritTec's Noise
Cancellation (Version 2,10).
To test the new program of GritTec's Noise Cancellation (Version
2.10) with GUI interface, please download it via
GritTec's website
or contact us via Online Request form.
About GritTec
GritTec Laboratory (GritTec Ltd.) specializes on research and
development of algorithms and technologies in the field of speech
and audio processing. GritTec's research is focused on speech
enhancement, speech concealment, voice biometric, speech recognition,
speech synthesis and other speech and audio technologies.
Url: http://www.grittec.com
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