Speech Coding with Dynamic Bit Allocation (Multimode Coding)

1991 ◽  
pp. 157-166 ◽  
Author(s):  
Tomohiko Taniguchi ◽  
Yoshinori Tanaka ◽  
Robert M. Gray
Keyword(s):  
Speech Coding ◽  
Bit Allocation

A Low-Complexity 3.6kbps Speech Coding Algorithm Based on Mixed Excitation

2013 ◽  
Vol 401-403 ◽  
pp. 1282-1286
Author(s):  
Qiang Li ◽  
Li Zhen Wang ◽  
Xu Jiu Xia
Keyword(s):  
Computational Complexity ◽  
High Frequency ◽  
Speech Coding ◽  
Low Complexity ◽  
Speech Quality ◽  
Bit Allocation ◽  
Synthetic Speech ◽  
Scalar Quantization ◽  
Decision Error

A low-complexity 3.6kb/s speech coding algorithm based on mixed excitation is presented in this paper. It uses the parameter encoding and mixed excitation technology to ensure the quality of speech. Through adopting the scalar quantization of Line Spectrum Frequency (LSF), the algorithm reduces the storage and computational complexity. Meanwhile, improved frame type with dynamic Unvoiced/Voiced (U/V) thresholds make a reduction of the traditional U/V decision error and the sudden transformation of U/V frame. A modified bit allocation table is introduced and the PESQ-MOS test shows that the synthetic speech quality has been improved and reached the quality of communication, especially for high frequency female speakers with new frame type.

Vector quantisation of wideband transform coefficient time trajectories in speech coding

1988 ◽  
Vol 24 (13) ◽  
pp. 773 ◽  
Author(s):  
T. Fjällbrant ◽  
F. Mekuria
Keyword(s):  
Speech Coding ◽  
Vector Quantisation

scholarly journals Generative Speech Coding with Predictive Variance Regularization

2021 ◽  
Author(s):  
W. Bastiaan Kleijn ◽  
Andrew Storus ◽  
Michael Chinen ◽  
Tom Denton ◽  
Felicia S. C. Lim ◽  
...  
Keyword(s):  
Speech Coding
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