Title :
1kb/s waveform interpolation speech coding based on non-negative matrix factorization
Author :
Xue, Er-juan ; Bao, Chang-chun
Author_Institution :
Sch. of Electron. Inf. & Control Eng., Beijing Univ. of Technol., Beijing
Abstract :
A new 1kb/s waveform interpolation (WI) speech coding algorithm based on non-negative matrix factorization (NMF) is proposed and implemented in this paper. Multi-frame parameter joint vector or matrix quantization, parameter prediction and discrete cosine transform (DCT) are used to reduce the bit rate and to improve the quality of speech. The results of informal subjective listening test shows that the intelligibility and articulation of the algorithm are close to that of 2kb/s NMF-based WI coder (called ldquoNMF-WIrdquo as convenience).
Keywords :
discrete cosine transforms; interpolation; matrix decomposition; speech coding; speech intelligibility; vector quantisation; waveform analysis; DCT; bit rate 1 bit/s; bit rate reduction; discrete cosine transform; matrix quantization; nonnegative matrix factorization; parameter prediction; waveform interpolation speech coding; Bit rate; Discrete cosine transforms; Finite impulse response filter; Humans; Interpolation; Low pass filters; Quantization; Signal processing algorithms; Speech coding; Testing;
Conference_Titel :
Signal Processing, 2008. ICSP 2008. 9th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2178-7
Electronic_ISBN :
978-1-4244-2179-4
DOI :
10.1109/ICOSP.2008.4697186
