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ICASSP
2009
IEEE
14 years 6 months ago
A generalized family of parameter estimation techniques
The Extended Baum-Welch (EBW) Transformations is one of a variety of techniques to estimate parameters of Gaussian mixture models. In this paper, we provide a theoretical framewor...
Dimitri Kanevsky, Tara N. Sainath, Bhuvana Ramabha...
ICASSP
2009
IEEE
14 years 6 months ago
Posterior features applied to speech recognition tasks with user-defined vocabulary
This paper presents a novel approach for those applications where vocabulary is defined by a set of acoustic samples. In this approach, the acoustic samples are used as reference...
Guillermo Aradilla, Hervé Bourlard, Mathew ...
ICASSP
2009
IEEE
14 years 6 months ago
Acoustic fall detection using Gaussian mixture models and GMM supervectors
We present a system that detects human falls in the home environment, distinguishing them from competing noise, by using only the audio signal from a single far-field microphone....
Xiaodan Zhuang, Jing Huang, Gerasimos Potamianos, ...
ICASSP
2009
IEEE
14 years 6 months ago
Fast acoustic computations using graphics processors
In this paper we present a fast method for computing acoustic likelihoods that makes use of a Graphics Processing Unit (GPU). After enabling the GPU acceleration the main processo...
Paul R. Dixon, Tasuku Oonishi, Sadaoki Furui
ICASSP
2009
IEEE
14 years 6 months ago
Secure image retrieval through feature protection
This paper addresses the problem of image retrieval from an encrypted database, where data confidentiality is preserved both in the storage and retrieval process. The paper focus...
Wenjun Lu, Avinash L. Varna, Ashwin Swaminathan, M...
ICASSP
2009
IEEE
14 years 6 months ago
High-rate distributed multi-source cooperation using complex field coding
A multisource cooperative protocol is developed capable of achieving diversity order up to the number of cooperating users at a high throughput. In this design each source jointly...
Alfonso Cano Pleite, Jesús Gómez-Vil...
ICASSP
2009
IEEE
14 years 6 months ago
Compression of image patches for local feature extraction
Local features are widely used for content-based image retrieval and object recognition. We present an efficient method for encoding digital images suitable for local feature extr...
Mina Makar, Chuo-Ling Chang, David M. Chen, Sam S....
ICASSP
2009
IEEE
14 years 6 months ago
Improved subspace DoA estimation methods with large arrays: The deterministic signals case
This paper is devoted to the subspace DoA estimation using a large antennas array when the number of available snapshots is of the same order of magnitude than the number of senso...
Pascal Vallet, Philippe Loubaton, Xavier Mestre
ICASSP
2009
IEEE
14 years 6 months ago
Parsimonious dictionary learning
Mehrdad Yaghoobi, Thomas Blumensath, Michael E. Da...
ICASSP
2009
IEEE
14 years 6 months ago
A frequency hopping spread spectrum transmission scheme for uncoordinated cognitive radios
One of the major challenges to cognitive radios is the synchronization of distributed radios onto the same spectrum white spaces which vary in time and space. In this paper, we pr...
Xiaohua Li, Juite Hwu