Matched-filter processing of microphone array for spatial volume selectivity

Jan, E.; Svaizer, Piergiorgio; Flanagan, James L.

doi:10.1109/iscas.1995.521409

Cited by 36 publications

(30 citation statements)

References 4 publications

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“…Existing array systems have been used in a number of applications. These include teleconferencing (Flanagan, 1985a,b;Flanagan et al, 1991;Kellerman, 1991), speech recognition (Silverman, 1987;Che, Rahim & Flanagan, 1992;Che et al, 1994;Giuliani, Omologo & Svaizer, 1994), speaker identification (Lin, Jan & Flanagan, 1994), speech acquisition in an automobile environment (Grenier, 1992;Oh, Viswanathan & Papamichalis, 1992), sound capture in reverberant enclosures (Flanagan, Surendran & Jan, 1993;Adugna, 1994;Jan, Svaizer & Flanagan, 1995), largeroom recording-conferencing (Flanagan et al, 1985), acoustic surveillance (Omologo & Svaizer, 1993, 1994, and hearing aid devices (Greenberg & Zurek, 1992). …”

mentioning

confidence: 99%

A practical methodology for speech source localization with microphone arrays

Brandstein

Silverman

1997

Computer Speech & Language

269

190

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confidence: 99%

A practical methodology for speech source localization with microphone arrays

Brandstein

Silverman

1997

Computer Speech & Language

269

190

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“…For most localization methods, acoustic reverberation is detrimental [3]- [6][42]; although some are less sensitive [15] and some even benefit from it [16]. In a room environment, the reverberation level is determined by the frequeicy.…”

Section: Multpath Ireverberationmentioning

confidence: 99%

A Framework for Context-Aware Acoustic Source Localization

Chen

Xiao

2006

2006 6th International Conference on ITS Telecommunications

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In this paper the state-of-the-art acoustic souLrce localization teclmiques are overviewed at first, followved by an anialysis of the interactive relationship between the performnance and various acoustic context related factors. The suitable application scenarios of these techniques are sumnmiarized from which one can easilyv identify the most suiitable method for a specific application. It is conlclulded based on the discussion that generally there is no0 single method to be onmipotent. Motivated by this coniclusion, the conicept of the contextaware acoustic souLrce localizationi is proposed. The uniderlyinig idea is that the source localization scheme should strategically adapt from timie to time based on the acouistic context, such as the varying sounild fields, relative source-to-array positions, and many other factors. A prelimi'nary framework-to systematically implement such a concept is finally proposed and the fuiture work is briefly discussed.

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“…The motivation behind rake receivers [17] is that reflections can be used constructively to reinforce the direct path signal. The term acoustic rake receiver was first used in [18] but the concept can be traced back to [19,20]. Using knowledge of the image source locations up to 3rd order, independent beams (fingers) were directed at each of the reflections and summed, having first time aligned the image source signals with the direct path signal.…”

Section: Introductionmentioning

confidence: 99%

Spherical microphone array acoustic rake receivers

Javed

Moore

Naylor

2016

2016 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)

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Several signal independent acoustic rake receivers are proposed for speech dereverberation using spherical microphone arrays. The proposed rake designs take advantage of multipaths, by separately capturing and combining early reflections with the direct path. We investigate several approaches in combining reflections with the direct path source signal, including the development of beam patterns that point nulls at all preceding reflections. The proposed designs are tested in experimental simulations and their dereverberation performances evaluated using objective measures. For the tested configuration, the proposed designs achieve higher levels of dereverberation compared to conventional signal independent beamforming systems; achieving up to 3.6 dB improvement in the direct-to-reverberant ratio over the plane-wave decomposition beamformer.

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Matched-filter processing of microphone array for spatial volume selectivity

Cited by 36 publications

References 4 publications

A practical methodology for speech source localization with microphone arrays

A practical methodology for speech source localization with microphone arrays

A Framework for Context-Aware Acoustic Source Localization

Spherical microphone array acoustic rake receivers

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