Fixed-Location Pulse Linear Prediction Coding Vocoder Model for Low Bit Rate Speech Coding
Author
Source
Mathematical Problems in Engineering
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-12-31
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
An arbitrary-location pulse determination algorithm based on multipulse linear prediction coding (MP-LPC) is presented.
This algorithm can determine all the amplitudes of the pulses at a time according to given pulse locations without the use of analysis-by-synthesis.
This ensures that the pulses are optimal in a least-square sense, providing the theoretical foundation to improve the quality of synthesized speech.
A fixed-location pulse linear prediction coding (FLP-LPC) method is proposed based on the arbitrary-location pulse determination algorithm.
Simulation of the algorithm in MATLAB showed the superior quality of the speech synthesized using pulses in different locations and processed using the arbitrary-location pulse determination algorithm.
The algorithm improved speech quality without affecting coding time, which was approximately 1.5% of the coding time for MP-LPC.
Pulse locations in FLP-LPC are fixed and do not need to be transmitted, with only LSF, gain, and 16 pulse amplitudes requiring coding and transmission.
FLP-LPC allows the generation of synthesized speech similar to G.729 coded speech at a rate of 2.5 kbps.
American Psychological Association (APA)
Ma, Zhen. 2018. Fixed-Location Pulse Linear Prediction Coding Vocoder Model for Low Bit Rate Speech Coding. Mathematical Problems in Engineering،Vol. 2018, no. 2018, pp.1-7.
https://search.emarefa.net/detail/BIM-1205798
Modern Language Association (MLA)
Ma, Zhen. Fixed-Location Pulse Linear Prediction Coding Vocoder Model for Low Bit Rate Speech Coding. Mathematical Problems in Engineering No. 2018 (2018), pp.1-7.
https://search.emarefa.net/detail/BIM-1205798
American Medical Association (AMA)
Ma, Zhen. Fixed-Location Pulse Linear Prediction Coding Vocoder Model for Low Bit Rate Speech Coding. Mathematical Problems in Engineering. 2018. Vol. 2018, no. 2018, pp.1-7.
https://search.emarefa.net/detail/BIM-1205798
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1205798