Method and apparatus for detecting pitch period of input signal

摘要

Provided are a method and apparatus for detecting a pitch period of an input signal, the method including: generating division frames by dividing the input signal by a unit of a first predetermined number of samples at a time domain; detecting a reference sample which has a peak value in each division frame; generating extraction frames by extracting a second predetermined number of samples on the basis of the reference sample of each division frame; and detecting the pitch period of the input signal based on a similarity among the extraction frames.