DocumentCode :
356689
Title :
Toward naturalness in narrow-band speech compression
Author :
Ghaemmaghami, S.
Author_Institution :
Electron. Res. Center, Sharif Univ. of Technol., Tehran, Iran
Volume :
1
fYear :
2000
fDate :
2000
Firstpage :
440
Abstract :
The paper addresses a new mixed model for characterizing LPC excitation on a 3-band basis through analyzing harmonic structure of the residual signal. In addition, a sub-frame based analysis is developed for detecting both aperiodic pulses and noisy signals, which plays a major role in reduction of perceptual errors introduced by some certain consonants. Preliminary results show that near natural speech is achieved at 1050 bps, allocated to the excitation parameters, suggesting superiority of the proposed coding scheme to the MELP-2400 coding standard, in the sense of perceptual quality of reconstructed speech
Keywords :
data compression; linear predictive coding; multimedia communication; speech coding; telecommunication standards; 3-band basis; LPC excitation; MELP-2400 coding standard; aperiodic pulses; coding scheme; excitation parameters; harmonic structure analysis; narrow-band speech compression; naturalness; near natural speech; noisy signals; perceptual errors; perceptual quality; reconstructed speech; residual signal; sub-frame based analysis; Acoustic noise; Frequency estimation; Linear predictive coding; Narrowband; Noise reduction; Power harmonic filters; Signal analysis; Signal processing; Spectral analysis; Speech coding;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Multimedia and Expo, 2000. ICME 2000. 2000 IEEE International Conference on
Conference_Location :
New York, NY
Print_ISBN :
0-7803-6536-4
Type :
conf
DOI :
10.1109/ICME.2000.869634
Filename :
869634
Link To Document :
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