NOISE SUPPRESSION DEVICE

摘要

A voice/noise section judgment unit (2) judges whether an input signal (100) is a voice according to a low-band amplitude spectrum (102). A noise spectrum estimation unit (3) estimates a low-band noise spectrum and a high-band noise spectrum according to the output from the voice/noise section judgment unit (2). A low band processing unit (201) and a high band processing unit (202) perform a noise suppression according to the noise spectrum outputted from the noise spectrum estimation unit (3).