METHOD, DEVICE AND SYSTEM FOR NOISE SUPPRESSION

摘要

Disclosed are a method, device and system for noise suppression. The method comprises: when a voice signal is input, a device for noise suppression receiving internal noise acquired by a reference voice acquisition mechanism and a voice signal containing external noise acquired by a master voice acquisition mechanism (S1); extracting an internal signal feature corresponding to the internal noise (S2); acquiring an external approximate feature corresponding to the external noise according to the internal signal feature and in combination with a pre-set mapping formula (S3); converting the external approximate feature into a corresponding estimated noise signal value by inverse Fourier transform (S4); performing pre-set noise cancellation processing on the noise signal estimate and the acquired voice signal containing the internal noise, so that a noise-suppressed denoised voice signal is obtained (S5). The method can solve the problem that performance will be poor due to the great difference between the sound field environments of a reference microphone and a main microphone when an ANC method is adopted.