Presentation | 2002/7/4 A Concealment Technique for the Packet Loss in VoIP Based on Waveform Substitution Noriko KOMAKI, Naofumi AOKI, Tsuyoshi YAMAMOTO, |
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Abstract(in Japanese) | (See Japanese page) |
Abstract(in English) | Speech quality of VoIP is degraded by transmission errors such as packet loss that is inevitable in best-effort communications. We have studied how to decrease such degradation. This study investigated PWR (Pitch Waveform Replication) method that is employed as an error hiding technique. The previous version of PWR employs an interpolation where past speech data is only used. For the decrease of some artifacts such as echoic quality in the begging and end of phonation, this study has proposed a new version that takes account of an interpolation from future speech data. In order to shorten the delay of the pitch extraction from future speech data, the proposed method employs a template matching. From the experimental results of objective and subjective evaluation, it is indicated that the proposed method is potentially useful for the improvement of speech quality. |
Keyword(in Japanese) | (See Japanese page) |
Keyword(in English) | VoIP / packet loss / waveform substitution method / pitch waveform replication method |
Paper # | CQ2002-59 |
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Conference Information | |
Committee | CQ |
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Conference Date | 2002/7/4(1days) |
Place (in Japanese) | (See Japanese page) |
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Paper Information | |
Registration To | Communication Quality (CQ) |
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Language | JPN |
Title (in Japanese) | (See Japanese page) |
Sub Title (in Japanese) | (See Japanese page) |
Title (in English) | A Concealment Technique for the Packet Loss in VoIP Based on Waveform Substitution |
Sub Title (in English) | |
Keyword(1) | VoIP |
Keyword(2) | packet loss |
Keyword(3) | waveform substitution method |
Keyword(4) | pitch waveform replication method |
1st Author's Name | Noriko KOMAKI |
1st Author's Affiliation | Graduate School of Engineering, Hokkaido University() |
2nd Author's Name | Naofumi AOKI |
2nd Author's Affiliation | Graduate School of Engineering, Hokkaido University |
3rd Author's Name | Tsuyoshi YAMAMOTO |
3rd Author's Affiliation | Graduate School of Engineering, Hokkaido University |
Date | 2002/7/4 |
Paper # | CQ2002-59 |
Volume (vol) | vol.102 |
Number (no) | 190 |
Page | pp.pp.- |
#Pages | 6 |
Date of Issue |