Results 211 to 220 of about 20,034 (256)
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The Journal of the Acoustical Society of America, 2002
A microphone array apparatus includes a microphone array including microphones, one of the microphones being a reference microphone, filters receiving output signals of the microphones, and a filter coefficient calculator which receives the output signals of the microphones, a noise and a residual signal obtained by subtracting filtered output signals ...
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A microphone array apparatus includes a microphone array including microphones, one of the microphones being a reference microphone, filters receiving output signals of the microphones, and a filter coefficient calculator which receives the output signals of the microphones, a noise and a residual signal obtained by subtracting filtered output signals ...
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2017
Microphone array (MA) involves several microphones positioned at diverse spatial locations. According to the sound propagation fundamentals, the multiple inputs can be handled to attenuate or to enhance the stemming signals from specific directions (desired signal) in the presence of demeaning noise sources (Levy et al.
Nilanjan Dey, Amira S. Ashour
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Microphone array (MA) involves several microphones positioned at diverse spatial locations. According to the sound propagation fundamentals, the multiple inputs can be handled to attenuate or to enhance the stemming signals from specific directions (desired signal) in the presence of demeaning noise sources (Levy et al.
Nilanjan Dey, Amira S. Ashour
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Optimal positioning of sensors for a microphone array
Proceedings of ICASSP '94. IEEE International Conference on Acoustics, Speech and Signal Processing, 2002Sensor positioning has an important influence on the performance of array processing. The main contributions of the paper are the proposal of criteria to evaluate and to optimize the performance of an array of sensors through its geometric configuration, the number and the positions of the sensors.
Saeed Gazor, Yves Grenier
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The Journal of the Acoustical Society of America, 2004
A microphone array system includes a plurality of microphones and a sound signal processing part. The microphones are arranged in such a manner that at least three microphones are arranged in a first direction to form a microphone row, at least three rows of the microphones are arranged so that the microphone rows are not crossed each other so as to ...
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A microphone array system includes a plurality of microphones and a sound signal processing part. The microphones are arranged in such a manner that at least three microphones are arranged in a first direction to form a microphone row, at least three rows of the microphones are arranged so that the microphone rows are not crossed each other so as to ...
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A microphone array system for speech recognition
1997 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2002This paper proposes a microphone array system which realizes the following important functions for speech recognition: (i) SNR improvement, (ii) flat spectrum response for an arbitrary speaker position, and (iii) speech period detection in noisy speech. This microphone array system features time delay estimation using prewhitening signal processing, an
Kenji Kiyohara +4 more
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Criteria for positioning of sensors for a microphone array
IEEE Transactions on Speech and Audio Processing, 1995Sensor positioning has an important influence on the performance of array processing. The main contributions of this paper are criteria to evaluate and to optimize the performance of an array of sensors through its geometric configuration-the number and the positions of sensors. The distance between the observed and the desired directivity patterns has
Saeed Gazor, Yves Grenier
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The Journal of the Acoustical Society of America, 1997
The present invention is directed to a method of apparatus of enhancing the signal-to-noise ratio of a microphone array. The array includes a plurality of microphones and has a directivity pattern which is adjustable based on one or more parameters. The parameters are evaluated so as to realize an angular orientation of a directivity pattern null. This
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The present invention is directed to a method of apparatus of enhancing the signal-to-noise ratio of a microphone array. The array includes a plurality of microphones and has a directivity pattern which is adjustable based on one or more parameters. The parameters are evaluated so as to realize an angular orientation of a directivity pattern null. This
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A self-steering digital microphone array
[Proceedings] ICASSP 91: 1991 International Conference on Acoustics, Speech, and Signal Processing, 1991A self-steering microphone array for teleconferencing in which the digitally implemented steering algorithm consists of two parts is presented. The first part, the beamforming, is based on known concepts. The second part, a novel voting algorithm, integrates elements of pattern classification and exploits temporal characteristics of speech signals.
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A database for microphone array experimentation
4th European Conference on Speech Communication and Technology (Eurospeech 1995), 1995Ea-Ee Jan +2 more
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