Audio stream combining apparatus, method and program

Patent metadata

Field	Value
Publication number	US-9031850-B2
Application number	US-200913391262-A
Country	US
Kind code	B2
Filing date	Aug 20, 2009
Priority date	Aug 20, 2009
Publication date	May 12, 2015
Grant date	May 12, 2015

Abstract

A stream combining apparatus is provided, comprising an input unit that receives the input of first group access units and second group access units from two streams that are generated by overlap transform; a decoder that generates group frames by decoding the group access units and that generates group frames by decoding the group access units; and a combining unit that uses first group frames and second group frames as a frame of reference for the access units, that decodes the frames, that performs selective mixing to generate mixed frames, that encodes said mixed frames, that generates a prescribed number of group access units, and that joins two streams, using a prescribed number of group access units as a joint such that the access units adjacent to each other on the boundary between the two streams and a prescribed number of group access units are stitched so that the information for decoding the same common frames is distributed.

First claim

What is claimed is:

1. An audio stream combining apparatus that generates one audio stream by joining two audio streams composed of compressed data that is generated by overlap transform;
wherein the access units that serve as units of decoding of said two audio streams are designated as group 1 access units and group 2 access units, respectively; wherein the frames that are produced by decoding said two audio streams are designated as group 1 frames and group 2 frames, respective…

Assignees

• Takada Yousuke
• Gvbb Holdings Sarl

Inventors

• Takada Yousuke

Classifications

• G10L19/008

  Physics · mapped topic

• G10L19/167 Primary

  Physics · mapped topic