Codebook excited linear predictive coding
In standard Codebook Exited Linear Coding (CELP) the encoding method uses random values for excitation vectors. The excitation is modelled by the codebook. Each time a segment of speech is encoded and an excitation vector is matched to minimise the error between original and encoded signal to maint...
| Main Authors: | , |
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| Format: | Book Chapter |
| Language: | English |
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IIUM Press
2011
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| Online Access: | http://irep.iium.edu.my/29350/1/Codebook_Excited_Linear.pdf |
| _version_ | 1825647194682687488 |
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| author | Shah, Asadullah Shaikh, Muniba |
| author_facet | Shah, Asadullah Shaikh, Muniba |
| author_sort | Shah, Asadullah |
| collection | IIUM |
| description | In standard Codebook Exited Linear Coding (CELP) the encoding method uses random values for excitation vectors. The excitation is modelled by the codebook. Each time a segment of speech is encoded and an excitation vector is matched to minimise the error between original and
encoded signal to maintain quality of speech. This chapter narrates the CELP encoding algorithm. The conceptual block diagram of twoO time varying filters and a Gaussian codebook
shown in figures, fc encoder and decoder respectively. This simplified block diagram mainly consists ofthree blocks, Short-Term Prediction, Long-Term Prediction and a random code-book. The parameters of these predictors SIP, LIP and the codebook are optimised and estimated in many ways. If these estimated parameters are accurate, the synthesized speech \vilI sound the same as original speech. Because ofthe limitations ofthe coding build blocks the estimated filter parameters case as the estimation errors in a result speech quality suffers degradations. The standard CELP algorithm explained gradually as follows and its block diagram shown in figure |
| first_indexed | 2024-03-05T23:14:00Z |
| format | Book Chapter |
| id | oai:generic.eprints.org:29350 |
| institution | International Islamic University Malaysia |
| language | English |
| last_indexed | 2024-03-05T23:14:00Z |
| publishDate | 2011 |
| publisher | IIUM Press |
| record_format | dspace |
| spelling | oai:generic.eprints.org:293502020-10-28T04:16:10Z http://irep.iium.edu.my/29350/ Codebook excited linear predictive coding Shah, Asadullah Shaikh, Muniba TK7800 Electronics. Computer engineering. Computer hardware. Photoelectronic devices In standard Codebook Exited Linear Coding (CELP) the encoding method uses random values for excitation vectors. The excitation is modelled by the codebook. Each time a segment of speech is encoded and an excitation vector is matched to minimise the error between original and encoded signal to maintain quality of speech. This chapter narrates the CELP encoding algorithm. The conceptual block diagram of twoO time varying filters and a Gaussian codebook shown in figures, fc encoder and decoder respectively. This simplified block diagram mainly consists ofthree blocks, Short-Term Prediction, Long-Term Prediction and a random code-book. The parameters of these predictors SIP, LIP and the codebook are optimised and estimated in many ways. If these estimated parameters are accurate, the synthesized speech \vilI sound the same as original speech. Because ofthe limitations ofthe coding build blocks the estimated filter parameters case as the estimation errors in a result speech quality suffers degradations. The standard CELP algorithm explained gradually as follows and its block diagram shown in figure IIUM Press 2011 Book Chapter PeerReviewed application/pdf en http://irep.iium.edu.my/29350/1/Codebook_Excited_Linear.pdf Shah, Asadullah and Shaikh, Muniba (2011) Codebook excited linear predictive coding. In: Statistical Time Division Multiplexing Architectures and Design. IIUM Press, Kuala Lumpur, pp. 18-21. ISBN 978-967-418-190-1 http://rms.research.iium.edu.my/bookstore/default.aspx |
| spellingShingle | TK7800 Electronics. Computer engineering. Computer hardware. Photoelectronic devices Shah, Asadullah Shaikh, Muniba Codebook excited linear predictive coding |
| title | Codebook excited linear predictive coding |
| title_full | Codebook excited linear predictive coding |
| title_fullStr | Codebook excited linear predictive coding |
| title_full_unstemmed | Codebook excited linear predictive coding |
| title_short | Codebook excited linear predictive coding |
| title_sort | codebook excited linear predictive coding |
| topic | TK7800 Electronics. Computer engineering. Computer hardware. Photoelectronic devices |
| url | http://irep.iium.edu.my/29350/1/Codebook_Excited_Linear.pdf |
| work_keys_str_mv | AT shahasadullah codebookexcitedlinearpredictivecoding AT shaikhmuniba codebookexcitedlinearpredictivecoding |