Noise Cancellation description
An utililty especially created for background noise reduction

Noise cancellation technology of single-microphone solution is used for reducing the external hindrances and background noises in speech signal.

Noise Cancellation is designed to be used for the selection of speech signal and also for selecting background noises.

Noise Cancellation is recommended to be used in case the amount of hindrances is unknow or if 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 speech signal.

Algorithms for high quality modification of speech signal are useful for applications such as:
· Wireless telephony systems;
· internet telephony and PC telephony ;
· Voice messaging services (voice mail);
· mobile phones with or without “hands free” system;
· call service centers.

Here are some key features of "Noise Cancellation":

· Single microphone solution;
· High quality of speech enhancement;
· Real-time processing;
· 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.


Requirements:

· Pentium-III class CPU;
· 64 Mb RAM;
· Soundcard;
· Headphones/Speakers;
· Microphone.

Signal requirement (Supported format):
· Windows PCM, 8, 16, 32 bits linear;
· 8 bits A/mu-Law PCM encoder;
· Microsoft ADPCM (MS ADPCM);
· Intel ADPCM (IMA ADPCM);
· Microsoft ACM GSM 6.10 (ACM Waveform).


Limitations:

· 30 days trial
· 15 seconds time limit for each loaded file