METHOD AND APPARATUS FOR EXTRACTING DEGREE OF VOICING IN AUDIO SIGNAL

摘要

A device and a method for detecting the degree of voicing from a voice signal are provided to supply information about a voiced sound based on all sounds and all audio signals through a fast and exact scheme having a little amount of computation. An input voice signal is transformed into a signal having a frequency domain. A pitch value is calculated based on the voice signal. A plurality of harmonic peaks existing in the voice signal is detected(103). The interval of neighboring harmonic peaks among the detected harmonic peaks is compared with the pitch value, and then a difference between the interval and the pitch value is employed as the degree included in the voice signal(105). Peak information is extracted from the voice signal. An order is determined based on the extracted peak information. A high-order peak corresponding to the determined order is detected as a harmonic peak.