Regeneration method and apparatus, program and recording medium

A technology for reproducing equipment and programs, used in digital recording/reproducing, speech analysis, instruments, etc., and can solve problems such as missing SBR heads SH

Inactive Publication Date: 2008-06-04
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in reproduction from an arbitrary frame as described above, the multiplexed SBR header SH may be lost in some cases

Method used

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  • Regeneration method and apparatus, program and recording medium
  • Regeneration method and apparatus, program and recording medium
  • Regeneration method and apparatus, program and recording medium

Examples

Experimental program
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Embodiment Construction

[0054] Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0055] FIG. 1 is a block diagram showing an example of a schematic structure of a stereo processing device used in a reproducing device or a reproducing method according to an embodiment of the present invention. In FIG. 1, components corresponding to those in FIG. 6 are given the same reference numerals.

[0056] The monaural audio signal is supplied to input 41 of FIG. 1 and the stereo processing information is supplied to input 42 of FIG. 1 . The monaural audio signal sent from the input terminal 41 is supplied to the switch 43X and the delay section 46 . The monaural audio signal emitted from the switch 43X is supplied to the band splitter 44 for band splitting, and the resulting band split monaural audio signal is supplied to the stereo processor 45 . The stereo processing information sent from the input terminal 42 is provided to the ste...

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Abstract

The present invention provides a reproducing method and apparatus for decoding processing and reproducing encoded audio data transmitted together with information necessary for stereo processing which is intermittently multiplexed in encoded information of a monaural audio signal. The reproduction method includes: a first step of outputting a stereo audio signal using a monaural audio signal if the necessary information for stereo processing is not provided; and a second step of starting to update the state in the filter if the necessary information for stereo processing is provided variable, and output the stereo audio signal using the monaural audio signal until all state variables are updated; and the third step, if the state variable in the filter is updated, then the monaural audio signal is performed based on passing through the stereo Stereo processing of stereo processing information for processing necessary information acquisition, and generating and outputting a stereo audio signal. The invention can be applied in the field of audio processing.

Description

[0001] Cross References to Related Applications [0002] The present invention contains subject matter of Japanese Patent Applications JP 2006-324775 and JP 2007-272856 filed in the Japan Patent Office on Nov. 30, 2006 and Oct. 19, 2007, respectively, the entire contents of which are hereby incorporated by reference. technical field [0003] The present invention relates to a reproduction method and apparatus, a program, and a recording medium for decoding processing and reproducing coded audio data transmitted together with stereo processing information intermittently multiplexed in coded information of a monaural audio signal. Background technique [0004] A reproduction device is known which is supplied with a monaural audio signal and stereo processing information, and generates a stereo audio signal by performing stereo processing on the monaural audio signal on the basis of the stereo processing information. [0005] Typical stereo processing based on a monaural audio ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L19/00H04S1/00H04S3/00G10L19/02G10L19/008G10L21/038
CPCH04S5/00G10L19/008G10L19/0204G11B20/10
Inventor 剑持千智畠中光行
Owner SONY CORP
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