Search Results - "Cuperman, V."

Structured vector quantization using linear transforms by Etemoglu, A.O., Cuperman, V.

“…This paper presents novel structured vector quantization (VQ) techniques characterized by the use of linear transformations for the input VQ. The first…”
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Joint bit allocation and dimensions optimization for vector transform quantization by Cuperman, V.

“…In vector transform quantization (VTQ), vectors consisting of M consecutive samples of a waveform are transformed into a set of M coefficients that are…”
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Hybrid coding: combined harmonic and waveform coding of speech at 4 kb/s by Shlomot, E., Cuperman, V., Gersho, A.

“…A new hybrid speech coding technique is presented in this paper, which combines a frequency-domain parametric coder (for stationary voiced and stationary…”
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Vector Predictive Coding of Speech at 16 kbits/s by Cuperman, V., Gersho, A.

“…Vector quantization, in its simplest form, may be regarded as a generalization of PCM (independent quantization of each sample of a waveform) to what might be…”
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Matching pursuits sinusoidal speech coding by Etemoglu, C.O., Cuperman, V.

“…This paper introduces a sinusoidal modeling technique for low bit rate speech coding wherein the parameters for each sinusoidal component are sequentially…”
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Nonsquare transform vector quantization by Lupini, P., Cuperman, V.

“…Several techniques for low-rate speech coding have emerged, requiring quantization of the spectral magnitudes. The set of spectral magnitudes may be considered…”
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A multiple description speech coder based on AMR-WB for mobile ad hoc networks by Dong, H., Gersho, A., Gibson, J.D., Cuperman, V.

“…To address the challenging task of achieving effective voice communication over mobile ad hoc networks (MANETs), we introduce a new multiple description (MD)…”
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Coding of variable dimension speech spectral vectors using weighted nonsquare transform vector quantization by Chunyan Li, Lupini, P., Shlomot, E., Cuperman, V.

“…This paper addresses the problem associated with variable-dimension vector quantization, and presents a new quantization technique that combines a…”
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On adaptive vector transform quantization for speech coding by Cuperman, V.

“…Adaptive vector transform quantization (AVTQ) as a coding system is discussed. The optimal bit assignment is derived based on vector quantization asymptotic…”
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Pitch adaptive windows for improved excitation coding in low-rate CELP coders by Rao, A.V., Ahmadi, S., Linden, J., Gersho, A., Cuperman, V., Heidari, R.

“…A novel paradigm based on pitch-adaptive windows is proposed for solving the problem of encoding the fixed codebook excitation in low bit-rate CELP coders. In…”
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Combined speech and channel coding for mobile radio communications by Hong Shi, Ho, P.K.M., Cuperman, V.

“…We present a combined speech and channel coding scheme for digital mobile communications. The speech coding algorithm is based on code-excited linear…”
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A CELP variable rate speech codec with low average rate by Lei Zhang, Tian Wang, Cuperman, V.

“…This paper presents a variable-rate CELP codec which achieves good communications speech quality at an average rate of about 3 kb/s. The codec operates as a…”
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Low-delay vector excitation coding of speech at 16 kb/s by Cuperman, V., Gersho, A., Pettigrew, R., Yao, J.-H.

“…The need for a 16-kb/s speech coding algorithm that has very low coding delay while achieving essentially the same high quality as the 32-kb/s adaptive…”
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Efficient search and design procedures for robust multi-stage VQ of LPC parameters for 4 kb/s speech coding by LeBlanc, W.P., Bhattacharya, B., Mahmoud, S.A., Cuperman, V.

“…A tree-searched multistage vector quantization (VQ) scheme for linear prediction coding (LPC) parameters which achieves spectral distortion lower than 1 dB…”
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Vector quantization: A pattern-matching technique for speech coding by Gersho, A., Cuperman, V.

“…The authors review recent results obtained in waveform coding of speech with vector quantization and describe some new developments not previously published…”
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Spectral magnitude quantization based on linear transforms for 4 kb/s speech coding by Etemoglu, C.O., Cuperman, V.

“…This paper presents a matching pursuits sinusoidal speech coder which incorporates new techniques including a novel vector quantization (VQ) technique used for…”
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Reconstruction of missing packets for CELP-based speech coders by Husain, A., Cuperman, V.

“…A common aspect of speech transmission through packetised networks is the need to consider the discarded (missing) packets as a result of error detection or…”
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Robust voicing estimation with dynamic time warping by Tian Wang, Cuperman, V.

“…This paper presents a robust voicing estimation algorithm for low bit rate harmonic speech coding. The algorithm is based on waveform time-warping followed by…”
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A 16-kbit/s bandwidth scalable audio coder based on the G.729 standard by Koishida, K., Cuperman, V., Gersho, A.

“…This paper proposes a bandwidth-scalable coding scheme based on the G.729 standard as a base layer coder. In the scheme, according to the channel conditions,…”
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Speech coding with an analysis-by-synthesis sinusoidal model by Etemoglu, C.O., Cuperman, V., Gersho, A.

“…We introduce a general and powerful approach to sinusoidal modeling of speech wherein a closed-loop analysis-by-synthesis (AbS) technique sequentially extracts…”
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