セカンダリチャンネルを符号化するためにプライマリチャンネルのコーディングパラメータを使用するステレオ音声信号を符号化するための方法およびシステム

Title:

Document Type and Number:

Japanese Patent JP7124170

Kind Code:

B2

Abstract:

A stereo sound signal encoding method and system for time domain down mixing right and left channels of an input stereo sound signal into primary and secondary channels, determine normalised correlations of the left channel and right channel in relation to a monophonic signal version of the sound. A long-term correlation difference is determined on the basis of the normalised correlation of the left channel and the normalised correlation of the right channel. The long-term correlation difference is converted into a factor /3, and the left and right channels are mixed to produce the primary and secondary channels using the factor β, wherein the factor β determines respective contributions of the left and right channels upon production of the primary and secondary channels.

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Inventors:

Tommy Weiyancourt
Milan Jelinek

Application Number:

JP2021084635A

Publication Date:

August 23, 2022

Filing Date:

May 19, 2021

Export Citation:

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Assignee:

Voice Age Corporation

International Classes:

G10L19/008; G10L19/24

Domestic Patent References:

JP2007525718A
JP2124597A

Foreign References:

WO2006059567A1
WO2006035705A1

Attorney, Agent or Firm:

Murayama Yasuhiko
Shinya Mihiro
Tatsuhiko Abe

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