適応ブロック長符号化装置、その方法、プログラム及び記録媒体 - Nippon Telegraph and Telephone Corporation

Title:

適応ブロック長符号化装置、その方法、プログラム及び記録媒体

Document Type and Number:

Japanese Patent JP4658853

Kind Code:

B2

Abstract:

To reduce an arithmetic amount for signal analysis, in an adaptive block length encoding in which a frame is encoded by hierarchically dividing it into a plurality of blocks.

At first, a plurality layers which are composed by one or more blocks from the frame which is a time period of an input signal. Then, when an analysis period composed of one block of any layer is constituted with a plurality of blocks of one or more layers which are different from the layer, an input signal is analyzed on each block corresponding to any set of blocks for constituting the analysis period, and analysis information is generated. The analysis information corresponding to the analysis period is generated by using the analysis information which is generated for the plurality of blocks for constituting the analysis period.

Inventors:

Takehiro Moriya
Noboru Harada
Yu Kamamoto

Application Number:

JP2006111279A

Publication Date:

March 23, 2011

Filing Date:

April 13, 2006

Export Citation:

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Assignee:

Nippon Telegraph and Telephone Corporation

International Classes:

G10L19/00; G10L19/022; G10L19/16; G10L19/24

Domestic Patent References:

JP8179799A
JP2000134105A
JP58203500A
JP57195299A

Foreign References:

WO2006008817A1

Other References:

Tilman Liebchen, Takehiro Moriya, Noboru Harada, Yutaka Kamamoto, Yuriy A. Reznik,The MPEG-4 Audio Lossless Coding (ALS) Standard Technology and Applications,Audio Engineering Society Convention Paper,2005年10月,p.1-14

Attorney, Agent or Firm:

Naoki Nakao
Taku Kusano
Yukio Nakamura

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