FIELD: radio engineering, communication.
SUBSTANCE: apparatus for adaptive suppression of acoustic noise and acoustic focused interference has a bandpass filter bank which breaks down an input signal which is a sum of a speech signal, acoustic noise and focused interference into a series of brands with adaptively controlled attenuation. Attenuation is controlled by units for multiplying output signals of filters of the bank and control signals obtained by comparing a threshold defined by the input signal of the apparatus and signal envelopes at outputs of corresponding filters of the bank. Attenuation is carried out in those transmission bands of the filters of the bank that are affected by acoustic noise and focused interference. Multiplication results are transmitted to the inputs of the adder unit, thereby generating the output signal of the apparatus after further filtering in the output bandpass filter.
EFFECT: high ratio of the power of the useful signal to total the total power of acoustic noise and acoustic focused interference and reduced loss of useful information.
1 dwg
