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Conference Paper: A mixed excitation LPC vocoder operating at very low bit rate
| Title | A mixed excitation LPC vocoder operating at very low bit rate |
|---|---|
| Authors | |
| Issue Date | 1997 |
| Publisher | IEEE. |
| Citation | The 6th IEEE International Conference on Universal Personal Communications Record, San Diego, CA., 12-16 October 1997. In Conference Proceedings, 1997, v. 2, p. 406-409 How to Cite? |
| Abstract | This paper presents a 1.2 kb/s mixed LPC vocoder based on multiband excitation (MBE) model. The vocoder extracts the pitch by a robust and efficient tracking algorithm. The cut-off frequency, which is a fundamental parameter in a mixed excitation system, is obtained by the v/uv decision of MBE analysis. In order to reduce the bit rate, the coder has used frame interpolation between neighboring frames. A fast and reliable linear interpolation algorithm is proposed. Informal listening tests indicate that for either clean speech or telephone speech, the synthesized speech sounds natural and intelligible, and the quality is better than that of 2.4 kb/s LPC-10e standard. |
| Persistent Identifier | http://hdl.handle.net/10722/54067 |
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Mao, JS | en_HK |
| dc.contributor.author | Chan, SC | en_HK |
| dc.contributor.author | Ho, KL | en_HK |
| dc.date.accessioned | 2009-04-03T07:35:52Z | - |
| dc.date.available | 2009-04-03T07:35:52Z | - |
| dc.date.issued | 1997 | en_HK |
| dc.identifier.citation | The 6th IEEE International Conference on Universal Personal Communications Record, San Diego, CA., 12-16 October 1997. In Conference Proceedings, 1997, v. 2, p. 406-409 | en_HK |
| dc.identifier.uri | http://hdl.handle.net/10722/54067 | - |
| dc.description.abstract | This paper presents a 1.2 kb/s mixed LPC vocoder based on multiband excitation (MBE) model. The vocoder extracts the pitch by a robust and efficient tracking algorithm. The cut-off frequency, which is a fundamental parameter in a mixed excitation system, is obtained by the v/uv decision of MBE analysis. In order to reduce the bit rate, the coder has used frame interpolation between neighboring frames. A fast and reliable linear interpolation algorithm is proposed. Informal listening tests indicate that for either clean speech or telephone speech, the synthesized speech sounds natural and intelligible, and the quality is better than that of 2.4 kb/s LPC-10e standard. | en_HK |
| dc.language | eng | en_HK |
| dc.publisher | IEEE. | en_HK |
| dc.relation.ispartof | International Conference on Universal Personal Communications | - |
| dc.rights | ©1997 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. | - |
| dc.title | A mixed excitation LPC vocoder operating at very low bit rate | en_HK |
| dc.type | Conference_Paper | en_HK |
| dc.identifier.email | Chan, SC: scchan@eee.hku.hk | en_HK |
| dc.identifier.email | Ho, KL: klho@eee.hku.hk | en_HK |
| dc.description.nature | published_or_final_version | en_HK |
| dc.identifier.doi | 10.1109/ICUPC.1997.627196 | en_HK |
| dc.identifier.hkuros | 36746 | - |