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

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

Research output: Contribution to journalArticle

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 languageEnglish
Pages (from-to)75-78
Number of pages4
JournalIEEE Signal Processing Letters
Volume12
Issue number1
DOIs
Publication statusPublished - 2005 Jan 1

Fingerprint

Codebook
Search Algorithm
Predictors
Closed-loop
Fast Algorithm
Encoding
First-order
Experimental Results
Speech
Standards

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Jung, Sung Kyo ; Kim, Kyung Tae ; Park, Young Cheol ; Kang, Hong-Goo. / A fast adaptive-codebook search algorithm for G.723.1 speech coder. In: IEEE Signal Processing Letters. 2005 ; Vol. 12, No. 1. pp. 75-78.
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A fast adaptive-codebook search algorithm for G.723.1 speech coder. / Jung, Sung Kyo; Kim, Kyung Tae; Park, Young Cheol; Kang, Hong-Goo.

In: IEEE Signal Processing Letters, Vol. 12, No. 1, 01.01.2005, p. 75-78.

Research output: Contribution to journalArticle

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