منابع مشابه
Multi-Channel Sub-Band Speech Recognition
Two distinct fields of research into robust speech recognition are the use of microphone arrays for signal enhancement and the use of independent frequency sub-band models for robust recognition. In this article, we propose and investigate the integration of these two techniques on two different levels. First, a broad-band beamforming microphone array allows for natural integration with sub-ban...
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Recently multi-band speech recognition has been proposed to improve robustness under environmental noises. One important issue is how to combine decisions from individual sub-band recognizers to arrive at a nal decision. Under the hidden Markov modeling (HMM) framework, one common approach is combining sub-band likelihoods linearly in an optimal manner so that the more reliable sub-bands are em...
متن کاملMicrophone array sub-band speech recognition
This paper proposes the integration of sub-band speech recognition with a microphone array. A broadband beamforming microphone array allows for natural integration with sub-band speech recognition as the beamformer is typically implemented as a combination of band-limited sub-arrays. In this paper, rather than recombining the sub-array outputs to give a single enhanced output, we propose the fu...
متن کاملSub-band based recognition of noisy speech
A new approach to automatic speech recognition based on independent class-conditional probability estimates in several frequency sub-bands is presented. The approach is shown to be especially applicable to environments which cause partial corruption of the frequency spectrum of the signal. Some of the issues involved in the implementation of the approach are also addressed.
متن کاملMulti-band continuous speech recognition
The problem addressed by this paper is to enhance the continuous speech recognizers robustness to noise. For this purpose, the acoustic signal is filtered into several spectral bands, and independent recognition is achieved in each band. Then, the system recombines the results given by each recognizer and delivers a unique solution. The main advantage of this method is to consider the signal on...
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ژورنال
عنوان ژورنال: EURASIP Journal on Advances in Signal Processing
سال: 2001
ISSN: 1687-6172,1687-6180
DOI: 10.1155/s1110865701000154