Invention Grant
US09026236B2 Audio signal processing apparatus, audio coding apparatus, and audio decoding apparatus
有权
音频信号处理装置，音频编码装置和音频解码装置
- Patent Title: Audio signal processing apparatus, audio coding apparatus, and audio decoding apparatus
- Patent Title (中): 音频信号处理装置，音频编码装置和音频解码装置
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Application No.: US13256055Application Date: 2010-10-19
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Publication No.: US09026236B2Publication Date: 2015-05-05
- Inventor: Tomokazu Ishikawa , Takeshi Norimatsu , Kok Seng Chong , Huan Zhou , Haishan Zhong
- Applicant: Tomokazu Ishikawa , Takeshi Norimatsu , Kok Seng Chong , Huan Zhou , Haishan Zhong
- Applicant Address: US CA Torrance
- Assignee: Panasonic Intellectual Property Corporation of America
- Current Assignee: Panasonic Intellectual Property Corporation of America
- Current Assignee Address: US CA Torrance
- Agency: Wenderoth, Lind & Ponack, L.L.P.
- Priority: JP2009-242603 20091021; JP2010-005282 20100113; JP2010-059784 20100316
- International Application: PCT/JP2010/006180 WO 20101019
- International Announcement: WO2011/048792 WO 20110428
- Main IPC: G06F17/00
- IPC: G06F17/00 ; G10L21/04 ; G10L21/0388
Abstract:
To provide an audio signal processing apparatus which can perform, with low operation amount, audio signal processing that is either time stretch and/or compression processing or frequency modulation processing. The audio signal processing apparatus is intended to transform an input audio signal sequence using a predetermined adjustment factor. The audio signal processing apparatus includes a filter bank (2601) which transforms the input audio signal sequence into Quadrature Mirror Filter (QMF) coefficients using a filter for Quadrature Mirror Filter analysis (a QMF analysis filter) and an adjusting unit (2602) which adjusts the QMF coefficients based on a predetermined adjustment factor.
Public/Granted literature
- US20120022676A1 AUDIO SIGNAL PROCESSING APPARATUS, AUDIO CODING APPARATUS, AND AUDIO DECODING APPARATUS Public/Granted day:2012-01-26
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