TY - GEN
T1 - Finite-state vector quantization over noisy channels and its application to LSP parameters
AU - Hussain, Yunus
AU - Farvardin, Nariman
N1 - Publisher Copyright:
© 1992 IEEE.
PY - 1992
Y1 - 1992
N2 - In this paper we describe a noisy channel finite-state vector quantizer (FSVQ) for quantizing speech LSP parameters. First we show that under noiseless channel conditions, the ordinary FSVQ of [1], when used to encode the LSP parameters, achieves a 1 dB average spectral distortion at 24 bits/frame; each LSP vector is split into 3 subvectors and an 8-state FSVQ is used for each subvector. However, when channel noise is present, the ordinary FSVQ performance degrades drastically. Therefore, we describe a modified FSVQ system that is designed taking into account the channel noise. It is shown by means of simulations that the new system is robust to channel noise and outperforms the channel-optimized VQ [2] and the channel-matched multi-stage VQ of [3] by saving 1.5-4 bits/vector, depending on the level of noise in the channel.
AB - In this paper we describe a noisy channel finite-state vector quantizer (FSVQ) for quantizing speech LSP parameters. First we show that under noiseless channel conditions, the ordinary FSVQ of [1], when used to encode the LSP parameters, achieves a 1 dB average spectral distortion at 24 bits/frame; each LSP vector is split into 3 subvectors and an 8-state FSVQ is used for each subvector. However, when channel noise is present, the ordinary FSVQ performance degrades drastically. Therefore, we describe a modified FSVQ system that is designed taking into account the channel noise. It is shown by means of simulations that the new system is robust to channel noise and outperforms the channel-optimized VQ [2] and the channel-matched multi-stage VQ of [3] by saving 1.5-4 bits/vector, depending on the level of noise in the channel.
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U2 - 10.1109/ICASSP.1992.226102
DO - 10.1109/ICASSP.1992.226102
M3 - Conference contribution
AN - SCOPUS:84988790055
T3 - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
SP - 133
EP - 136
BT - ICASSP 1992 - 1992 International Conference on Acoustics, Speech, and Signal Processing
T2 - 1992 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 1992
Y2 - 23 March 1992 through 26 March 1992
ER -