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:
Jan. 08, 2013
Filed:
Oct. 20, 2008
Ryoji Suzuki, Nara, JP;
Kazuyuki Murata, Kyoto, JP;
Ryoji Suzuki, Nara, JP;
Kazuyuki Murata, Kyoto, JP;
Panasonic Corporation, Osaka, JP;
Abstract
An audio mixing device that can get simpler processing done safely without depending on the property of an input signal is provided. An audio mixing device includes: an analyzer circuit to receive and separate audio data into primary and secondary audio data and control data; decoder circuits for decoding the primary and supplementary audio data separated into primary and supplementary audio signals in multiple channels; a mixer circuit for generating an M-channel composite audio signal by adding the supplementary audio signals to the primary ones channel-by-channel and converting the M-channel composite audio signal into N-channel audio signals (where N<M) based on a mixing coefficient group set; and a decision circuit, which determines, by parameters included in the control data separated to indicate the existence or non-existence of supplementary audio, whether there is any supplementary audio, no matter whether the supplementary audio data has been separated or not, and chooses, based on the result, one of mixing coefficient groups stored in a coefficient memory circuit and sets it for the mixer circuit.