CELP coding at 4.0 kb/sec and below: improvements to FS-1016
While code excited linear prediction (CELP) speech coders can produce high levels of output speech quality at rates near 4 kb/s, they may not be suitable for toll quality communications. The authors propose several modifications to improve the quality of the standard CELP algorithm while simultaneou...
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| container_end_page | 316 vol.1 |
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| creator | Zinser, R.L. Koch, S.R. |
| description | While code excited linear prediction (CELP) speech coders can produce high levels of output speech quality at rates near 4 kb/s, they may not be suitable for toll quality communications. The authors propose several modifications to improve the quality of the standard CELP algorithm while simultaneously reducing its transmission rate. The modifications include a multimode excitation that increases the convergence rate of the adaptive (pitch) codebook. A low-complexity spectral vector quantization algorithm is also developed that reduces the coding rate and decreases the spectral distortion. SNR improvements of 2 dB and a significant reduction in perceptual artifacts have been observed.< > |
| doi_str_mv | 10.1109/ICASSP.1992.225909 |
| format | Conference Proceeding |
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SNR improvements of 2 dB and a significant reduction in perceptual artifacts have been observed.< ></description><subject>Bit rate</subject><subject>Code standards</subject><subject>Convergence</subject><subject>Encoding</subject><subject>Iterative algorithms</subject><subject>Loudspeakers</subject><subject>Research and development</subject><subject>Speech coding</subject><subject>Stochastic processes</subject><subject>Vector quantization</subject><issn>1520-6149</issn><issn>2379-190X</issn><isbn>9780780305328</isbn><isbn>0780305329</isbn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>1992</creationdate><recordtype>conference_proceeding</recordtype><sourceid>6IE</sourceid><sourceid>RIE</sourceid><recordid>eNotj8tqwzAUREUfUJP6B7LSD8i5Vw_LKt0Uk7QFQwPOorsgWVJxG9vBNi39-xrSYWB2Z2YIWSNkiGA2r-VTXe8zNIZnnCsD5ookXGjD0MD7NUmNLmCxACV4cUMSVBxYjtLckXSaPmGRVKglT8hjua32tBl8239QO1OZAf1ymyk01PaeunAafh5o253H4Tt0oZ8nOg90VzMEzO_JbbSnKaT_uSKH3fZQvrDq7XkZWbF2KZlZcFpE7T243Oqcq0IrHX0MvhDcYIxWGREkIGohGyOc1tIWuXfcSyU5iBVZX7BtCOF4HtvOjr_Hy3PxBzvTRzE</recordid><startdate>1992</startdate><enddate>1992</enddate><creator>Zinser, R.L.</creator><creator>Koch, S.R.</creator><general>IEEE</general><scope>6IE</scope><scope>6IL</scope><scope>CBEJK</scope><scope>RIE</scope><scope>RIL</scope></search><sort><creationdate>1992</creationdate><title>CELP coding at 4.0 kb/sec and below: improvements to FS-1016</title><author>Zinser, R.L. ; Koch, S.R.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i174t-eb73f7dd0b6a76258757fdfed83291ffa593e4011734c93b774a86db2d454203</frbrgroupid><rsrctype>conference_proceedings</rsrctype><prefilter>conference_proceedings</prefilter><language>eng</language><creationdate>1992</creationdate><topic>Bit rate</topic><topic>Code standards</topic><topic>Convergence</topic><topic>Encoding</topic><topic>Iterative algorithms</topic><topic>Loudspeakers</topic><topic>Research and development</topic><topic>Speech coding</topic><topic>Stochastic processes</topic><topic>Vector quantization</topic><toplevel>online_resources</toplevel><creatorcontrib>Zinser, R.L.</creatorcontrib><creatorcontrib>Koch, S.R.</creatorcontrib><collection>IEEE Electronic Library (IEL) Conference Proceedings</collection><collection>IEEE Proceedings Order Plan All Online (POP All Online) 1998-present by volume</collection><collection>IEEE Xplore All Conference Proceedings</collection><collection>IEEE Electronic Library (IEL)</collection><collection>IEEE Proceedings Order Plans (POP All) 1998-Present</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Zinser, R.L.</au><au>Koch, S.R.</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>CELP coding at 4.0 kb/sec and below: improvements to FS-1016</atitle><btitle>[Proceedings] ICASSP-92: 1992 IEEE International Conference on Acoustics, Speech, and Signal Processing</btitle><stitle>ICASSP</stitle><date>1992</date><risdate>1992</risdate><volume>1</volume><spage>313</spage><epage>316 vol.1</epage><pages>313-316 vol.1</pages><issn>1520-6149</issn><eissn>2379-190X</eissn><isbn>9780780305328</isbn><isbn>0780305329</isbn><abstract>While code excited linear prediction (CELP) speech coders can produce high levels of output speech quality at rates near 4 kb/s, they may not be suitable for toll quality communications. The authors propose several modifications to improve the quality of the standard CELP algorithm while simultaneously reducing its transmission rate. The modifications include a multimode excitation that increases the convergence rate of the adaptive (pitch) codebook. A low-complexity spectral vector quantization algorithm is also developed that reduces the coding rate and decreases the spectral distortion. SNR improvements of 2 dB and a significant reduction in perceptual artifacts have been observed.< ></abstract><pub>IEEE</pub><doi>10.1109/ICASSP.1992.225909</doi></addata></record> |
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| ispartof | [Proceedings] ICASSP-92: 1992 IEEE International Conference on Acoustics, Speech, and Signal Processing, 1992, Vol.1, p.313-316 vol.1 |
| issn | 1520-6149 2379-190X |
| language | eng |
| recordid | cdi_ieee_primary_225909 |
| source | IEEE Electronic Library (IEL) Conference Proceedings |
| subjects | Bit rate Code standards Convergence Encoding Iterative algorithms Loudspeakers Research and development Speech coding Stochastic processes Vector quantization |
| title | CELP coding at 4.0 kb/sec and below: improvements to FS-1016 |
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