Results 211 to 220 of about 64,350 (258)
Some of the next articles are maybe not open access.
Linear predictive coding systems
ICASSP '76. IEEE International Conference on Acoustics, Speech, and Signal Processing, 2005This paper describes the real time implementation of a Linear Predictive Coding algorithm that has been developed over the past five years. The algorithm chosen for the analyzer is a modification of the Covariance Method introduced by B. S. Atal [1],[2] of Bell Labs. The system for pitch extraction uses a minimum distance function correlation technique.
openaire +1 more source
Multichannel linear predictive coding of color images
ICASSP '84. IEEE International Conference on Acoustics, Speech, and Signal Processing, 1984This paper reports on a preliminary study of applying single-channel (scalar) and multichannel (vector) 2-D linear prediction to color image modeling and coding. Also, the novel idea of a multi-input single-output 2-D ADPCM coder is introduced. The results of this study indicate that texture information in multispectral images can be represented by ...
Petros Maragos +2 more
openaire +1 more source
1984
If one approximates the vocal tract as a series of fixed length tubes (which is equivalent to representing it as an all-pole digital filter) it becomes possible to predict successive samples of the speech wave as linear combinations of previous samples. The coefficients in the linear combination characterize the shape of the vocal tract.
Alan Bundy, Lincoln Wallen
openaire +1 more source
If one approximates the vocal tract as a series of fixed length tubes (which is equivalent to representing it as an all-pole digital filter) it becomes possible to predict successive samples of the speech wave as linear combinations of previous samples. The coefficients in the linear combination characterize the shape of the vocal tract.
Alan Bundy, Lincoln Wallen
openaire +1 more source
A Survey of Linear Predictive Coding: Part I of Linear Predictive Coding and the Internet Protocol
Foundations and Trends® in Signal Processing, 2010Linear prediction has long played an important role in speech processing, especially in the development during the late 1960s of the first low bit rate speech compression/coding systems. The approach, which eventually became known as linear predictive coding (LPC), coincidentally came to fruition at the right time to be adopted as the speech ...
openaire +1 more source
Multiband code-excited linear prediction (MBCELP) for speech coding
Signal Processing, 1993zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Gao Yang 0002, Henri Leich, René Boite
openaire +1 more source
Continuously adaptive linear predictive coding of speech
ICASSP-88., International Conference on Acoustics, Speech, and Signal Processing, 2003A continuously adaptive approach to speech encoding is presented. In contrast with other adaptation methods, it provides reliable modeling of the transition between two phonemes, and, unlike the usual block-stationary techniques, it eliminates the need to detect these transitions.
Jerome R. Bellegarda, David C. Farden
openaire +1 more source
Adaptive linear prediction lossless image coding
Proceedings DCC'99 Data Compression Conference (Cat. No. PR00096), 1999The practical lossless digital image compressors that achieve the best results in terms of compression ratio are also simple and fast algorithms with low complexity both in terms of memory usage and running time. Surprisingly, the compression ratio achieved by these systems cannot be substantially improved even by using image-by-image optimization ...
Motta, Giovanni +2 more
openaire +2 more sources
Trellis code excited linear prediction (TCELP) speech coding
1999 IEEE Workshop on Speech Coding Proceedings. Model, Coders, and Error Criteria (Cat. No.99EX351), 2003This paper describes using the trellis-based scalar-vector quantizer for sources with memory to solve the excitation codebook search problem of code excited linear prediction (CELP) speech coders. This approach leads to a 24 kbit/s telephony-bandwidth low-delay (3 msec) trellis CELP coder, which outperforms both ITU-T 15 kbit/s G.728 LD-CELP and G.726 ...
Cheng-Chieh Lee, Yair Shoham
openaire +1 more source
Continuous representations in linear predictive coding
[Proceedings] ICASSP 91: 1991 International Conference on Acoustics, Speech, and Signal Processing, 1991A major source of audible distortion in current low-bit-rate speech coding algorithms is an inaccurate degree of periodicity of the voiced speech signal. If the correlations between neighboring pitch cycles are accurately reproduced, these audible distortions can be reduced significantly.
openaire +1 more source
The Journal of the Acoustical Society of America, 1998
There is provided a code excitation linear predictive (CELP) coding or decoding apparatus in which a code vector, which is transmitted by a codebook such as a stochastic codebook, is converted adaptively in accordance with vocal tract analysis information (LPC) so that a high quality reproduction speech is obtained at a low coding rate.
openaire +1 more source
There is provided a code excitation linear predictive (CELP) coding or decoding apparatus in which a code vector, which is transmitted by a codebook such as a stochastic codebook, is converted adaptively in accordance with vocal tract analysis information (LPC) so that a high quality reproduction speech is obtained at a low coding rate.
openaire +1 more source