Results 181 to 190 of about 110,925 (215)
Structured Stochastic Codebook and Codebook Adaptation for CELP [PDF]
, 1993 Since its introduction in 1984, Code Excited Linear Prediction (CELP) [1] has been intensively investigated as a promising coding algorithm for providing good quality speech at low bit rates. CELP is the name for a class of coding algorithms that employs vector quantization (VQ) using a perceptually weighted error criterion measured in an Analysis-by ...
Yasuji Ohta +2 more
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Codebook+: A New Module for Creating Discriminative Codebooks
Multimedia and Expo, 2007 IEEE International Conference on, 2007In this paper, we introduce a new module, Codebook+, into a classical framework which combines bag-of-words image representation with probabilistic latent semantic analysis (pLSA) for unsupervised object categorization. This new module makes the framework less sensitive to the image sampling methods as well as improves its performance.
Ziming Zhang, Liang-Tien Chia, Syin Chan
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Hierarchical codebook design for fast search with Grassmannian codebook
2012 IEEE Wireless Communications and Networking Conference (WCNC), 2012It has been well known that channel aware systems (closed-loop) have better performance than channel unknown systems (open-loop). In order to know channel in the transmitter, receivers should send own channel information the transmitter through reverse channel.
Jungwoo Lee, Kyeongjun Ko
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Robust Codebook Design Based on Unitary Rotation of Grassmannian Codebook
2010 IEEE 72nd Vehicular Technology Conference - Fall, 2010Codebook design has been investigated extensively over the past few years for quantized precoding in Multiple-Input Multiple-Output (MIMO) communication system. Grassmannian line packing (GLP) codebook is widely used in industry and literature. Traditional GLP codebook can only show good performance in spatial uncorrelated channel.
Jianfeng Kang, Shaohua Li, Haiyan Jia
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Evaluation of improved articulatory codebooks and codebook access distance measures
International Conference on Acoustics, Speech, and Signal Processing, 2002An improved method for generating articulatory codebooks is introduced. The distance measure used for codebook access is optimized. The improvements are evaluated and compared in terms of a perceptually motivated formant distance measure. It is found that the codebooks derived from the articulatory model of P. Mermelstein (1973) are more robust against
P. Meyer +2 more
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Multilingual weighted codebooks
2008 IEEE International Conference on Acoustics, Speech and Signal Processing, 2008In this paper we present an approach for speech recognition of multiple languages with constrained resources on embedded devices. Examples of such systems are navigation systems, mobile phones and MP3 players. Speech recognizers on such systems are typically to-date semi-continuous speech recognizers, which are based on vector quantization.
Rainer Gruhn, M. Raab, E. Noeth
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Improved Codebook Edge Detection
Graphical Models and Image Processing, 1995Abstract A technique for detecting edges directly from a vector-quantized image representation, called codebook edge detection was proposed by Mclean (CVGIP: Graphical Models Image Process. 55, 1993, 48-57). With this method, the edges can be detected by a simple table lookup, a so-called "edge codebook." In this paper, we propose an improved method ...
Ding Ming-yue, Zhou Jie, Peng Jia-xiong
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Improving Robustness of Codebook-Based Noise Estimation Approaches With Delta Codebooks
IEEE Transactions on Audio, Speech, and Language Processing, 2012We present a new codebook-based speech enhancement approach which is able to increase robustness of conventional codebook-based approaches against model mismatch and unknown noise types. This is achieved by training only the difference between the actual noise and a robust estimate (e.g., obtained by minimum statistics or recursive minimum tracking) in
T. Rosenkranz, Henning Puder
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