A fast adaptive-codebook search algorithm for G.723.1 speech coder

Sung Kyo Jung; Kyung Tae Kim; Young Cheol Park; Hong Goo Kang

doi:10.1109/LSP.2004.838210

A fast adaptive-codebook search algorithm for G.723.1 speech coder

Sung Kyo Jung, Kyung Tae Kim, Young Cheol Park, Hong Goo Kang

Department of Electrical and Electronic Engineering

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

This letter presents a new fast search algorithm for the multitap adaptive codebook used in the G.723.1 standard speech coder. In contrast with the standard method that a closed-loop pitch lag and gains for a fifth-order pitch predictor are searched simultaneously, the proposed algorithm adopts a sequential and restricted approach to determine the parameters. In other words, the proposed scheme first determines a couple of pitch lag candidates using a first-order pitch predictor and then computes the pitch gains of the fifth-order predictor within a restricted search area. Experimental results confirm that the proposed algorithm reduces the total complexity by 30.69% in the encoding process and provides speech quality equivalent to the standard method.

Original language	English
Pages (from-to)	75-78
Number of pages	4
Journal	IEEE Signal Processing Letters
Volume	12
Issue number	1
DOIs	https://doi.org/10.1109/LSP.2004.838210
Publication status	Published - 2005 Jan

Bibliographical note

Funding Information:
Manuscript received January 11, 2004; revised April 7, 2004. This work was supported in part by the Biometric Engineering Research Center (KOSEF). The associate editor coordinating the review of this paper and approving it for publication was Prof. Mark Hasegawa-Johnson.

All Science Journal Classification (ASJC) codes

Signal Processing
Electrical and Electronic Engineering
Applied Mathematics

Access to Document

10.1109/LSP.2004.838210

Cite this

@article{a4a4d848f61b48e2904b57353984bb1a,

title = "A fast adaptive-codebook search algorithm for G.723.1 speech coder",

abstract = "This letter presents a new fast search algorithm for the multitap adaptive codebook used in the G.723.1 standard speech coder. In contrast with the standard method that a closed-loop pitch lag and gains for a fifth-order pitch predictor are searched simultaneously, the proposed algorithm adopts a sequential and restricted approach to determine the parameters. In other words, the proposed scheme first determines a couple of pitch lag candidates using a first-order pitch predictor and then computes the pitch gains of the fifth-order predictor within a restricted search area. Experimental results confirm that the proposed algorithm reduces the total complexity by 30.69% in the encoding process and provides speech quality equivalent to the standard method.",

author = "Jung, {Sung Kyo} and Kim, {Kyung Tae} and Park, {Young Cheol} and Kang, {Hong Goo}",

note = "Funding Information: Manuscript received January 11, 2004; revised April 7, 2004. This work was supported in part by the Biometric Engineering Research Center (KOSEF). The associate editor coordinating the review of this paper and approving it for publication was Prof. Mark Hasegawa-Johnson.",

year = "2005",

month = jan,

doi = "10.1109/LSP.2004.838210",

language = "English",

volume = "12",

pages = "75--78",

journal = "IEEE Signal Processing Letters",

issn = "1070-9908",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "1",

}

TY - JOUR

T1 - A fast adaptive-codebook search algorithm for G.723.1 speech coder

AU - Jung, Sung Kyo

AU - Kim, Kyung Tae

AU - Park, Young Cheol

AU - Kang, Hong Goo

N1 - Funding Information: Manuscript received January 11, 2004; revised April 7, 2004. This work was supported in part by the Biometric Engineering Research Center (KOSEF). The associate editor coordinating the review of this paper and approving it for publication was Prof. Mark Hasegawa-Johnson.

PY - 2005/1

Y1 - 2005/1

N2 - This letter presents a new fast search algorithm for the multitap adaptive codebook used in the G.723.1 standard speech coder. In contrast with the standard method that a closed-loop pitch lag and gains for a fifth-order pitch predictor are searched simultaneously, the proposed algorithm adopts a sequential and restricted approach to determine the parameters. In other words, the proposed scheme first determines a couple of pitch lag candidates using a first-order pitch predictor and then computes the pitch gains of the fifth-order predictor within a restricted search area. Experimental results confirm that the proposed algorithm reduces the total complexity by 30.69% in the encoding process and provides speech quality equivalent to the standard method.

AB - This letter presents a new fast search algorithm for the multitap adaptive codebook used in the G.723.1 standard speech coder. In contrast with the standard method that a closed-loop pitch lag and gains for a fifth-order pitch predictor are searched simultaneously, the proposed algorithm adopts a sequential and restricted approach to determine the parameters. In other words, the proposed scheme first determines a couple of pitch lag candidates using a first-order pitch predictor and then computes the pitch gains of the fifth-order predictor within a restricted search area. Experimental results confirm that the proposed algorithm reduces the total complexity by 30.69% in the encoding process and provides speech quality equivalent to the standard method.

UR - http://www.scopus.com/inward/record.url?scp=11844249362&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=11844249362&partnerID=8YFLogxK

U2 - 10.1109/LSP.2004.838210

DO - 10.1109/LSP.2004.838210

M3 - Article

AN - SCOPUS:11844249362

SN - 1070-9908

VL - 12

SP - 75

EP - 78

JO - IEEE Signal Processing Letters

JF - IEEE Signal Processing Letters

IS - 1

ER -

A fast adaptive-codebook search algorithm for G.723.1 speech coder

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this