公开(公告)号：KR20100124678A

公开(公告)日：2010-11-29

申请号：KR20100046928

申请日：2010-05-19

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： LEE MI SUK ,  YANG HEE SIK ,  KIM HYUN WOO ,  SUNG JONG MO ,  BAE HYUN JOO ,  LEE BYUNG SUN

IPC: G10L19/00 ,  G10L19/02 ,  G10L19/24 ,  G11B20/10 ,  H04N7/24

CPC classification number: G10L19/02 ,  G10L19/0212 ,  G10L19/24

Abstract: PURPOSE: A method and an apparatus for encoding and decoding an audio signal by using layered sinusoidal pulse coding are provided to improve the quality of a synthesized signal in consideration of sine wave pulse coding for a lower layer when encoding and decoding an audio signal in an upper layer. CONSTITUTION: A method for encoding an audio signal according comprises: receiving a converted audio signal; dividing the converted audio signal into a plurality of sub-bands(1004); performing a 1st sinusoidal pulse coding on the plurality of sub-bands; determining a block where a 2nd sinusoidal pulse coding is to be performed, out of the plurality sub-bands; and performing the 2nd sinusoidal pulse coding on the corresponding block(1008-1010), wherein a 1st sinusoidal pulse coding step is variably performed depending on the pulse coding information.

Abstract translation: 目的：提供一种通过使用分层正弦脉冲编码来对音频信号进行编码和解码的方法和装置，以便在编码和解码音频信号的编码和解码时考虑到下层的正弦波脉冲编码来提高合成信号的质量 上层。 构成：一种用于对音频信号进行编码的方法，包括：接收转换的音频信号; 将转换后的音频信号划分成多个子带（1004）; 对所述多个子带执行第一正弦脉冲编码; 确定要在多个子带中执行第二正弦脉冲编码的块; 以及对相应块（1008-1010）执行第二正弦脉冲编码，其中根据脉冲编码信息可变地执行第一正弦脉冲编码步骤。