Performance analysis of transcoding algorithms in packet-loss environments

Chang Heon Lee, Sung Kyo Jung, Hong Goo Kang, Dae Hee Youn

Research output: Contribution to conferencePaper

Abstract

This paper describes a robustness issue of the transcoder under packet loss channel environments. We briefly introduce the conventional transcoder between AMR and G. 729A speech coders, and analyze the performance of transcoder under frame erasure environments. In a tandem method even a single packet loss significantly affects to the parametric buffers of the successive frames because it should re-analyze the distorted signals. However, the propagation effect of the transcoding method is less severe because it uses a direct bitstream mapping method. By comparing the time delay of error propagation, spectral distortion of spectral information, magnitude spectral distance of excitation information and perceptual evaluation of speech quality (PESQ), we show that the transcoding algorithm is also a promising technology under packet loss channel environments.

Original languageEnglish
Pages2009-2012
Number of pages4
Publication statusPublished - 2004 Jan 1
Event8th International Conference on Spoken Language Processing, ICSLP 2004 - Jeju, Jeju Island, Korea, Republic of
Duration: 2004 Oct 42004 Oct 8

Other

Other8th International Conference on Spoken Language Processing, ICSLP 2004
CountryKorea, Republic of
CityJeju, Jeju Island
Period04/10/404/10/8

Fingerprint

performance
evaluation
Spectrality
Performance Analysis
time
Reanalysis
Erasure
Evaluation
Robustness
Conventional

All Science Journal Classification (ASJC) codes

  • Language and Linguistics
  • Linguistics and Language

Cite this

Lee, C. H., Jung, S. K., Kang, H. G., & Youn, D. H. (2004). Performance analysis of transcoding algorithms in packet-loss environments. 2009-2012. Paper presented at 8th International Conference on Spoken Language Processing, ICSLP 2004, Jeju, Jeju Island, Korea, Republic of.
Lee, Chang Heon ; Jung, Sung Kyo ; Kang, Hong Goo ; Youn, Dae Hee. / Performance analysis of transcoding algorithms in packet-loss environments. Paper presented at 8th International Conference on Spoken Language Processing, ICSLP 2004, Jeju, Jeju Island, Korea, Republic of.4 p.
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Lee, CH, Jung, SK, Kang, HG & Youn, DH 2004, 'Performance analysis of transcoding algorithms in packet-loss environments' Paper presented at 8th International Conference on Spoken Language Processing, ICSLP 2004, Jeju, Jeju Island, Korea, Republic of, 04/10/4 - 04/10/8, pp. 2009-2012.

Performance analysis of transcoding algorithms in packet-loss environments. / Lee, Chang Heon; Jung, Sung Kyo; Kang, Hong Goo; Youn, Dae Hee.

2004. 2009-2012 Paper presented at 8th International Conference on Spoken Language Processing, ICSLP 2004, Jeju, Jeju Island, Korea, Republic of.

Research output: Contribution to conferencePaper

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N2 - This paper describes a robustness issue of the transcoder under packet loss channel environments. We briefly introduce the conventional transcoder between AMR and G. 729A speech coders, and analyze the performance of transcoder under frame erasure environments. In a tandem method even a single packet loss significantly affects to the parametric buffers of the successive frames because it should re-analyze the distorted signals. However, the propagation effect of the transcoding method is less severe because it uses a direct bitstream mapping method. By comparing the time delay of error propagation, spectral distortion of spectral information, magnitude spectral distance of excitation information and perceptual evaluation of speech quality (PESQ), we show that the transcoding algorithm is also a promising technology under packet loss channel environments.

AB - This paper describes a robustness issue of the transcoder under packet loss channel environments. We briefly introduce the conventional transcoder between AMR and G. 729A speech coders, and analyze the performance of transcoder under frame erasure environments. In a tandem method even a single packet loss significantly affects to the parametric buffers of the successive frames because it should re-analyze the distorted signals. However, the propagation effect of the transcoding method is less severe because it uses a direct bitstream mapping method. By comparing the time delay of error propagation, spectral distortion of spectral information, magnitude spectral distance of excitation information and perceptual evaluation of speech quality (PESQ), we show that the transcoding algorithm is also a promising technology under packet loss channel environments.

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Lee CH, Jung SK, Kang HG, Youn DH. Performance analysis of transcoding algorithms in packet-loss environments. 2004. Paper presented at 8th International Conference on Spoken Language Processing, ICSLP 2004, Jeju, Jeju Island, Korea, Republic of.