Title:
ENCODING DEVICE AND METHOD, DECODING DEVICE AND METHOD, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2013/027631
Kind Code:
A1
Abstract:
The present technology pertains to an encoding device and method, decoding device and method, and program that are able to increase audio quality. A QMF sub-band power calculation unit calculates the power of the QMF sub-band signal of a high-range QMF sub-band among a plurality of QMF sub-bands that configure an input signal. With respect to a sub-band comprising a number of high-range QMF sub-bands, a high-range sub-band power calculation unit calculates the high-range sub-band power of the sub-band by performing a computation that puts greater weight on larger QMF sub-band powers. A multiplexing circuit multiplexes and outputs: high-range encoded data obtained by encoding information for obtaining, by means of estimation, the high-region portion of an input signal and selected on the basis of the high-region sub-band power; and low-range encoded data obtained by encoding the low-region component of an input signal. The present technology can be applied to an encoding device.
Inventors:
YAMAMOTO YUKI (JP)
CHINEN TORU (JP)
CHINEN TORU (JP)
Application Number:
PCT/JP2012/070684
Publication Date:
February 28, 2013
Filing Date:
August 14, 2012
Export Citation:
Assignee:
SONY CORP (JP)
YAMAMOTO YUKI (JP)
CHINEN TORU (JP)
YAMAMOTO YUKI (JP)
CHINEN TORU (JP)
International Classes:
G10L21/04; G10L19/02; H03M7/30
Domestic Patent References:
| WO2011043227A1 | 2011-04-14 | |||
| WO2005111568A1 | 2005-11-24 |
Foreign References:
| JP2008139844A | 2008-06-19 | |||
| JP2010079275A | 2010-04-08 | |||
| JP2010020251A | 2010-01-28 | |||
| JP2001521648A | 2001-11-06 |
Other References:
See also references of EP 2750134A4
Attorney, Agent or Firm:
INAMOTO Yoshio et al. (JP)
Yoshio Inemoto (JP)
Yoshio Inemoto (JP)
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Claims: