Title :
High-quality audio transform coded excitation using trellis codes
Author :
Fischer, Thomas R. ; Sung, Hosang ; Zhan, Jie ; Oh, Eunmi
Author_Institution :
Sch. of EECS, Washington State Univ., Pullman, WA
fDate :
March 31 2008-April 4 2008
Abstract :
A trellis source code and novel variable-length lossless code are used in transform coded excitation audio coding. Implemented within the extended adaptive multi-rate wideband (AMR-WB+) audio coding framework, the proposed quantization and lossless coding method provide between 0.4 and 0.7 dB increase in signal-to-noise ratio over the E8 lattice VQ and spherical lossless code used in the AMR-WB+ standard.
Keywords :
audio coding; source coding; transform coding; trellis codes; variable length codes; extended adaptive multi-rate wideband; high-quality audio transform coded excitation; transform coded excitation audio coding; trellis source code; Audio coding; Code standards; Convolutional codes; Discrete Fourier transforms; Encoding; Lattices; Performance loss; Quantization; Source coding; Wideband; transform coded excitation; trellis code;
Conference_Titel :
Acoustics, Speech and Signal Processing, 2008. ICASSP 2008. IEEE International Conference on
Conference_Location :
Las Vegas, NV
Print_ISBN :
978-1-4244-1483-3
Electronic_ISBN :
1520-6149
DOI :
10.1109/ICASSP.2008.4517580
