APPARATUS AND METHOD FOR NOISE SUPPRESSION

摘要

Disclosed are an apparatus for removing noise, capable of: improving a noise removing effect by generating a reference voice signal before a voice signal and selecting a parameter to be used for noise removal in a reference voice signal section in advance, and a method therefor. The disclosed apparatus comprises: a parameter initializing unit which determines an initial value of the parameter to be used for noise removal based on a reference signal filtered by frequency; a parameter estimating unit which receives the initial value of the parameter from the parameter initializing unit, and estimates the parameter according to a signal filtered by frequency and inputted; a gain estimating unit which calculates a gain for each frequency based on the parameter of the parameter estimating unit; and a gain applying unit which applies the gain of the gain estimating unit to the signal filtered by frequency and inputted to remove noise.