发明名称 Voice encoding device and voice encoding method
摘要 Provided is an audio encoding device which can detect an optimal pitch pulse when using pitch pulse information as redundant information. The device includes: a search start decision unit (121) which decides the oldest point among a plurality of points where a pitch pulse may exist; a pitch pulse candidate selection unit (122) which defines a search range as a range between the search start point and the point preceding the point of the head of the current frame by one and selects a decoding sound source vector having a large amplitude in this search range as a pitch pulse position candidate; a selector switch (125) which successively switches a plurality of pitch pulse position candidates inputted from a pitch pulse candidate selection unit (122) for output to a pulse sequence generation unit (123) and an error minimization unit (124); a pulse sequence generation unit (123) which generates as a pulse sequence, a vector generated as an adaptive codebook component from the pitch pulse in the current frame when a pitch pulse is set to be a pitch pulse position candidate inputted from the selector switch (125).
申请公布号 US8364472(B2) 申请公布日期 2013.01.29
申请号 US20080528880 申请日期 2008.02.29
申请人 PANASONIC CORPORATION;EHARA HIROYUKI 发明人 EHARA HIROYUKI
分类号 G10L19/00;G10L19/005;G10L19/08;G10L19/09 主分类号 G10L19/00
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