APPARATUS AND METHOD FOR ESTIMATING NOISE LEVEL BY NOISE SECTION DISCRIMINATION

摘要

PURPOSE: An apparatus and a method for estimating a noise by noise section discrimination are provided to estimate a noise by using a voice member probability in a voice section and to increase a noise estimation result. CONSTITUTION: A frequency converting unit(110) converts inputted voice signals into voice signals of a frequency domain. A phase difference calculating unit(120) calculates a phase difference per frequency component from the converted voice signals. A voice member probability calculating unit(130) calculates a voice member probability by using the calculated phase difference. A noise estimating unit(140) discriminates a voice section based on the voice member probability.