منابع مشابه
Multichannel Speech Enhancement
1.1 Adaptive Filtering Review There are a number of possible degradations that can be found in a speech recording and that can affect its quality. On one hand, the signal arriving the microphone usually incorporates multiple sources: the desired signal plus other unwanted signals generally termed as noise. On the other hand, there are different sources of distortion that can reduce the clarity ...
متن کاملMultichannel filter for enhancement of speech blocks
This work presents the concepts and the achieved results of a proposed microphone array algorithm based on multi-dimensional Wiener filter developed to work on blocks of speech. The inputs to the algorithm are two correlation matrices: the correlation matrix of the background noise affecting the desired signal and the correlation matrix of the signal affected by the noise. Experiments show that...
متن کاملMultichannel Speech Enhancement in Cars: Explicit vs. Implicit Adaptation Control
Speech-based command interfaces are becoming more and more common in cars. Applications include automatic dialog systems for hands-free phone calls as well as more advanced features such as navigation systems. However, interferences, such as speech from the codriver, can significantly hamper the performance of the speech recognition component, which is crucial for those applications. This issue...
متن کاملMultichannel speech enhancement using Bayesian spectral amplitude estimation
This paper introduces two shon-time spectral amplitude estimators for speech enhancement with multiple microphones. Based on joint Gaussian models of speech and noise Fourier coefficients the clean speech amplitudes are estimated with respect to the MMSE or the MAP criterion. The estimators outperform single microphone minimum mean square amplitude estimators when the speech is highly correlate...
متن کاملPost-Filter Optimization for Multichannel Automotive Speech Enhancement
In an automotive environment, quality of speech communication using a hands-free equipment is often deteriorated by interfering car noise. In order to preserve the speech signal without car noise, a multichannel speech enhancement system including a beamformer and a post-filter can be applied. Since employing a beamformer alone is insufficient to substantially reducing the level of car noise, a...
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ژورنال
عنوان ژورنال: IEEE Signal Processing Letters
سال: 2006
ISSN: 1070-9908
DOI: 10.1109/lsp.2005.863819