Patent ID: 8086449
Filing Date: 2011-12-27
Classification: G10L

Abstract:
1. A vocal fry detecting apparatus for detecting a vocal fry section in a speech signal, comprising: a first framing unit configured to frame the speech signal with a first frame having a first frame length and shifted by a first frame shift amount; a power peak detecting unit configured to detect power peak in each of a series of first frames output from said first framing unit; a second framing unit configured to frame said speech signal with a second frame having a second frame length longer than said first frame length and shifted by a second frame shift amount larger than said first frame shift amount; a periodicity determining unit configured to determine presence or absence of periodicity in said speech signal in each of a series of second frames output from said second framing unit; a power peak selecting unit configured to select, from among the power peaks detected by said power peak detecting unit, a power peak in said second frame determined by said periodicity determining unit to have no periodicity; and a searching unit configured to search, for each of the power peaks selected by said power peak selecting unit, for a power peak having cross-correlation with another power peak in a prescribed section including said power peak in said speech signal, larger than a prescribed threshold, and detect the prescribed section including the power peak in said speech signal as the vocal fry section.