Transcoding algorithm for G.723.1 and AMR speech coders: For interoperability between VoIP and mobile networks

Sung Wan Yoon, Jin Kyu Choi, Hong Goo Kang, Dae Hee Youn

Research output: Contribution to conferencePaper

4 Citations (Scopus)

Abstract

In this paper, an efficient transcoding algorithm between G.723.1 and AMR speech coders is proposed for providing interoperability between IP and mobile networks. Transcoding is completed through three processing steps: line spectral pair (LSP) conversion, pitch interval conversion, and fast adaptivecodebook search. For maintaining minimum distortion, sensitive parameters to quality such as adaptive and fixedcodebooks are re-estimated from synthesized target signals. To reduce overall complexity, other parameters are directly converted in parametric levels without running through the complete decoding process. Objective and subjective preference tests verify that the proposed transcoding algorithm has equivalent quality to conventional tandem approach. In addition, the proposed algorithm achieves 20∼40% reduction of the overall complexity over tandem approach with a shorter processing delay.

Original languageEnglish
Pages1101-1104
Number of pages4
Publication statusPublished - 2003 Jan 1
Event8th European Conference on Speech Communication and Technology, EUROSPEECH 2003 - Geneva, Switzerland
Duration: 2003 Sep 12003 Sep 4

Other

Other8th European Conference on Speech Communication and Technology, EUROSPEECH 2003
CountrySwitzerland
CityGeneva
Period03/9/103/9/4

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All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Software
  • Linguistics and Language
  • Communication

Cite this

Yoon, S. W., Choi, J. K., Kang, H. G., & Youn, D. H. (2003). Transcoding algorithm for G.723.1 and AMR speech coders: For interoperability between VoIP and mobile networks. 1101-1104. Paper presented at 8th European Conference on Speech Communication and Technology, EUROSPEECH 2003, Geneva, Switzerland.