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Regeneration method and apparatus, program and recording medium

A technology of reproduction equipment and stereo, applied in the direction of digital recording/reproduction, speech analysis, instruments, etc., can solve the problem of missing SBR head SH, etc.

Inactive Publication Date: 2011-04-13
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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PUM

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Abstract

There is provided a playback method for decode-processing and playing back coded audio data which is transmitted with necessary stereo process information required for a stereo process intermittently multiplexed into coded information of a monaural audio signal. The playback method includes a first step of outputting stereo audio signals using the monaural audio signal if the necessary stereo process information is not supplied; a second step of starting updating stereo variables within filters, and outputting the stereo audio signals using the monaural audio signal until all the state variables are updated, if the necessary stereo process information is supplied; and a third step of performing the stereo process based on stereo process information acquired by the necessary stereo processinformation, on the monaural audio signal to generate and output stereo audio signals, if all the state variables within the filters are updated. The invention is applicable to the voice processing field.

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 Patents(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