音声信号の符号変換のための方法及び装置

Title:

音声信号の符号変換のための方法及び装置

Document Type and Number:

Japanese Patent JP5324450

Kind Code:

B2

Abstract:

The present invention provides method and device for transcoding between audio coding formats with different time-frequency analysis domains, as used for example by MPEG-AAC and mp3, particularly for facilitated and faster transcoding between such audio signals. A method for transcoding a framed audio signal from a first parameter domain (PD A ) into a second parameter domain (PD 3 ) comprises linearly transforming (T T ) two or more parameters of the first parameter domain (PD A ) to at least one parameter of the second parameter domain (PD B ), wherein the two or more parameters of the first parameter domain come from different frames of the audio signal in the first parameter domain. The linear transformation (T T ) can be described as a matrix and implemented as a look-up table.

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Inventors:

Yaks, Peter
Cordon, Sven

Application Number:

JP2009528672A

Publication Date:

October 23, 2013

Filing Date:

September 06, 2007

Export Citation:

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Assignee:

Thomson Licensing

International Classes:

G10L19/00; G10L19/022; G10L19/16; H03M7/30

Domestic Patent References:

JP2003223189A

Foreign References:

WO2005078707A1

Attorney, Agent or Firm:

Tadashige Ito
Tadahiko Ito
Shinsuke Onuki

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