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.