FIELD: acoustic equipment. SUBSTANCE: device has fast Fourier transform unit 3 which converts input voice signal to signal in particular area, and I value calculation unit 7 for regulation of filter characteristics in order to filter noise from input voice signal. In addition device has spectrum correction unit 10 for attenuation of input voice signal by means of filtering according filter characteristics calculated by means of noise threshold calculation unit 7. Unit 7 which calculates noise threshold calculated value of noise threshold according to level of maximal noise-signal ratio of input signal spectrum generated by fast Fourier transform unit 3, and approximation of noise level. It controls noise reduction in spectrum correction unit 10 according to noise threshold value. EFFECT: increased noise reduction, simplified processing. 11 cl, 10 dwg
