Title:
ENCODING DEVICE AND METHOD, DECODING DEVICE AND METHOD, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2015/053109
Kind Code:
A1
Abstract:
This technology pertains to an encoding device and method, a decoding device and method, and a program that make it possible to obtain high-quality audio with smaller encoded sizes. A signal encoding unit encodes an audio signal and outputs the obtained signal code string. A coefficient encoding unit encodes mixing coefficients that are used in a mixing process performed on the audio signal and outputs the obtained coefficient code string. A multiplexing unit multiplexes the signal code string and the coefficient code string together and outputs the obtained output code string. The coefficient encoding unit encodes the mixing coefficients by sorting said mixing coefficients on the basis of distances from input acoustic-source positions to playback-side speaker positions and obtaining differences between the mixing coefficients on the basis of the resulting order thereof. This technology can be applied to an encoding device and a decoding device.
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Inventors:
SHI RUNYU (JP)
CHINEN TORU (JP)
HONMA HIROYUKI (JP)
HATANAKA MITSUYUKI (JP)
CHINEN TORU (JP)
HONMA HIROYUKI (JP)
HATANAKA MITSUYUKI (JP)
Application Number:
PCT/JP2014/075797
Publication Date:
April 16, 2015
Filing Date:
September 29, 2014
Export Citation:
Assignee:
SONY CORP (JP)
International Classes:
G10L19/00; G10L19/008; H04S3/00; H04S5/02
Domestic Patent References:
| WO2012046685A1 | 2012-04-12 |
Foreign References:
| JP2009501943A | 2009-01-22 | |||
| JP2008219881A | 2008-09-18 | |||
| JP2001112083A | 2001-04-20 | |||
| JPH09106299A | 1997-04-22 | |||
| JPH10257600A | 1998-09-25 |
Other References:
"VIDEO CODING, AUDIO CODING AND MULTIPLEXING SPECIFICATIONS FOR DIGITAL BROADCASTING", 29 July 2009, ASSOCIATION OF RADIO INDUSTRIES AND BUSINESSES
KIMIO HAMASAKI: "Tendency of standardization of 22.2 multichannel sound system", NHK SCIENCE & TECHNOLOGY RESEARCH LABORATORIES
"Multichannel Stereophonic Sound System with and without accompanying Picture", 1992, INTERNATIONAL TELECOMMUNICATIONS UNION
KIMIO HAMASAKI: "Tendency of standardization of 22.2 multichannel sound system", NHK SCIENCE & TECHNOLOGY RESEARCH LABORATORIES
"Multichannel Stereophonic Sound System with and without accompanying Picture", 1992, INTERNATIONAL TELECOMMUNICATIONS UNION
Attorney, Agent or Firm:
NISHIKAWA Takashi et al. (JP)
Nishikawa 孝 (JP)
Nishikawa 孝 (JP)
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