| 摘要 |
FIELD: radio engineering, communication.SUBSTANCE: apparatus for suppressing acoustic noise and concentrated acoustic interference comprises: a unit for generating frame-segments, a unit for calculating spectral component levels, a unit for calculating the modulus of spectral components, a unit for calculating the control signal, a band-pass filter, a unit for generating a signal u(n), a unit for calculating dispersion, a unit for calculating threshold, a unit for multiplying spectral components with the control signal, an adder, a unit for calculating the inverse discrete Fourier transform and a low-pass filter.EFFECT: high efficiency of transmitting information in telecommunication public address systems operating in conditions with acoustic noise and concentrated interference.1 dwg |
