DocumentCode
2951100
Title
High quality audio coding using multipulse LPC
Author
Singhal, Sharad
Author_Institution
Bell Commun. Res. Inc., Morristown, NJ, USA
fYear
1990
fDate
3-6 Apr 1990
Firstpage
1101
Abstract
Experiments are described in coding broadband audio using multipulse linear predictive coding (LPC). It is possible to obtain stable LPC filters that model sinusoids closely and to include perceptual masking in these coders. The quantization of both the LPC and multipulse parameters is also examined, and it is found that multipulse can compensate for quantization error in LPC filters. With appropriate perceptual masking, these coders can provide high quality and audio output. At 128 kb/s, the coders achieved typical SNR values of 35-40 dB in simulations
Keywords
audio equipment; audio signals; digital filters; encoding; 128 kbit/s; 35 to 40 dB; LPC filters; SNR; broadband audio coding; multipulse LPC; perceptual masking; quantization; Audio coding; Bandwidth; Context modeling; Encoding; Filters; Frequency; Linear predictive coding; Nonlinear filters; Pulse generation; Quantization; Signal generators;
fLanguage
English
Publisher
ieee
Conference_Titel
Acoustics, Speech, and Signal Processing, 1990. ICASSP-90., 1990 International Conference on
Conference_Location
Albuquerque, NM
ISSN
1520-6149
Type
conf
DOI
10.1109/ICASSP.1990.116126
Filename
116126
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