Sciweavers

1060 search results - page 5 / 212
» Performance Improvement of Vector Quantization by Using Thre...
Sort
View
ICASSP
2011
IEEE
14 years 3 months ago
Coding of unquantized spectrum sub-bands in superwideband audio codecs
We present several new methods for coding of spectrum coefficients in embedded audio codecs. In audio codecs, the spectrum is often divided in sub-bands, and quantized using a vec...
Vaclav Eksler, Milan Jelinek
TASLP
2002
120views more  TASLP 2002»
14 years 11 months ago
Improved audio coding using a psychoacoustic model based on a cochlear filter bank
Perceptual audio coders use an estimated masked threshold for the determination of the maximum permissible just-inaudible noise level introduced by quantization. This estimate is d...
Frank Baumgarte
TIP
2002
92views more  TIP 2002»
14 years 11 months ago
Gradient match and side match fractal vector quantizers for images
In this paper we propose the gradient match fractal vector quantizers (GMFVQs) and the side match fractal vector quantizers (SMFVQs), which are two classes of finite state fractal...
Hsuan T. Chang
117
Voted
BMCBI
2005
178views more  BMCBI 2005»
14 years 11 months ago
A quantization method based on threshold optimization for microarray short time series
Background: Reconstructing regulatory networks from gene expression profiles is a challenging problem of functional genomics. In microarray studies the number of samples is often ...
Barbara Di Camillo, Fatima Sanchez-Cabo, Gianna To...
CSL
2000
Springer
14 years 11 months ago
Efficient speech recognition using subvector quantization and discrete-mixture HMMS
This paper introduces a new form of observation distributions for hidden Markov models (HMMs), combining subvector quantization and mixtures of discrete distrib utions. Despite w...
Vassilios Digalakis, S. Tsakalidis, Costas Harizak...