The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 10, 2015
Filed:
Mar. 08, 2011
Yasuhiro Toguri, Kanagawa, JP;
Shiro Suzuki, Kanagawa, JP;
Jun Matsumoto, Kanagawa, JP;
Yuuji Maeda, Tokyo, JP;
Yuuki Matsumura, Saitama, JP;
Yasuhiro Toguri, Kanagawa, JP;
Shiro Suzuki, Kanagawa, JP;
Jun Matsumoto, Kanagawa, JP;
Yuuji Maeda, Tokyo, JP;
Yuuki Matsumura, Saitama, JP;
Sony Corporation, Tokyo, JP;
Abstract
The present invention relates to a speech processing apparatus, a speech processing method and a program which, when multichannel audio signals are downmixed and coded, prevent delay and an increase in the computation amount upon decoding of the audio signals. An inverse multiplexing unit () acquires coded data on which a BC parameter is multiplexed. An uncorrelated frequency-time transform unit () performs IMDCT transform and IMDST transform of frequency spectrum coefficients of a monaural signal (X) obtained from this coded data to generate the monaural signal X) which is a time domain signal and a signal (X') which is substantially uncorrelated with this monaural signal (X). The stereo synthesis unit () generates a stereo signal by synthesizing the monaural signal (X) and the signal (X′) using the BC parameter. The present invention is applicable to, for example, a speech processing apparatus which decodes a downmixed and coded stereo signal.