| Presentation | 2010-01-22 Multi-layer Speech Coding Using Combination of Modes Based on Sparseness of Input Spectrum : ITU-T G.722/G.711.1 Super Wideband Extension Candidate Masahiro FUKUI, Kimitaka TSUTSUMI, Shigeaki SASAKI, Yusuke HIWASAKI, Yoichi HANEDA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper describes a coding algorithm for 8-14 kHz bandwith layer of a scalable speech codec, submitted by a consortium including NTT as a candidate in the qualification phase of ITU-T G.722/G.711.1 super wideband extension standardization. The candidate codec achieves high speech quality irrespective of the sound source by using the proposed multistage quantization in the MDCT domain that selects the best encoding scheme among four modes according to the characteristic of various sound sources. The subjective test results showed that the candidate codec obtained higher scores than the reference codec in all samples and passed all requirements of the standardization in listening quality. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | 14-kHz-bandwidth speech coding / scalable coding / vector quantization / ITU-T G.722 / ITU-T G.711.1 |
| Paper # | CQ2009-97,PRMU2009-196,SP2009-137,MVE2009-119 |
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| Conference Information | |
| Committee | CQ |
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| Conference Date | 2010/1/14(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
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| Vice Chair | |
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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) | Multi-layer Speech Coding Using Combination of Modes Based on Sparseness of Input Spectrum : ITU-T G.722/G.711.1 Super Wideband Extension Candidate |
| Sub Title (in English) | |
| Keyword(1) | 14-kHz-bandwidth speech coding |
| Keyword(2) | scalable coding |
| Keyword(3) | vector quantization |
| Keyword(4) | ITU-T G.722 |
| Keyword(5) | ITU-T G.711.1 |
| 1st Author's Name | Masahiro FUKUI |
| 1st Author's Affiliation | NTT Cyber Space Laboratories, NTT Corporation() |
| 2nd Author's Name | Kimitaka TSUTSUMI |
| 2nd Author's Affiliation | NTT Cyber Space Laboratories, NTT Corporation |
| 3rd Author's Name | Shigeaki SASAKI |
| 3rd Author's Affiliation | NTT Cyber Space Laboratories, NTT Corporation |
| 4th Author's Name | Yusuke HIWASAKI |
| 4th Author's Affiliation | NTT Cyber Space Laboratories, NTT Corporation |
| 5th Author's Name | Yoichi HANEDA |
| 5th Author's Affiliation | NTT Cyber Space Laboratories, NTT Corporation |
| Date | 2010-01-22 |
| Paper # | CQ2009-97,PRMU2009-196,SP2009-137,MVE2009-119 |
| Volume (vol) | vol.109 |
| Number (no) | 373 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |