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Increasing the environment-awareness of rake beamforming for directive acoustic sources

Tutkimustuotosvertaisarvioitu

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Increasing the environment-awareness of rake beamforming for directive acoustic sources. / Pertilä, Pasi; Brutti, Alessio.

15th International Workshop on Acoustic Signal Enhancement (IWAENC). 2016.

Tutkimustuotosvertaisarvioitu

Harvard

Pertilä, P & Brutti, A 2016, Increasing the environment-awareness of rake beamforming for directive acoustic sources. julkaisussa 15th International Workshop on Acoustic Signal Enhancement (IWAENC). International Workshop on Acoustic Signal Enhancement, 1/01/00.

APA

Pertilä, P., & Brutti, A. (2016). Increasing the environment-awareness of rake beamforming for directive acoustic sources. teoksessa 15th International Workshop on Acoustic Signal Enhancement (IWAENC)

Vancouver

Pertilä P, Brutti A. Increasing the environment-awareness of rake beamforming for directive acoustic sources. julkaisussa 15th International Workshop on Acoustic Signal Enhancement (IWAENC). 2016

Author

Pertilä, Pasi ; Brutti, Alessio. / Increasing the environment-awareness of rake beamforming for directive acoustic sources. 15th International Workshop on Acoustic Signal Enhancement (IWAENC). 2016.

Bibtex - Lataa

@inproceedings{51432e9164504a48b34fb0685ea83625,
title = "Increasing the environment-awareness of rake beamforming for directive acoustic sources",
abstract = "Speech signals captured by distant microphones in enclosures are typically deteriorated by reverberation and background noise. Commonly, the quality of the signals is enhanced applying delay and sum beamforming (or variants) to a microphone array. However, under particular conditions, the multi-path acoustic propagation leading to reverberation is not completely detrimental and can be used in a constructive way. In this direction, mirrored (virtual) microphones have been successfully applied in various research areas. In addition, the majority of naturally occurring sound sources, such as the human speaker, presents a certain degree of radiation directivity, which, coupled with data-independent beamforming, has been shown to slightly increase the captured speech quality.Building upon the concepts of environment awareness and the acoustic rake receiver, this paper investigates the use of mirrored microphones, associated to isolated and strong reflections, in combination with source directivity, to further improve the captured speech quality. Real-data gathered with a linear nested array, as well as simulated data, are used to test the proposed scheme, showing superior performance with respect to similar state of the art solutions.",
author = "Pasi Pertil{\"a} and Alessio Brutti",
year = "2016",
month = "9",
day = "1",
language = "English",
isbn = "978-1-5090-2007-2",
booktitle = "15th International Workshop on Acoustic Signal Enhancement (IWAENC)",

}

RIS (suitable for import to EndNote) - Lataa

TY - GEN

T1 - Increasing the environment-awareness of rake beamforming for directive acoustic sources

AU - Pertilä, Pasi

AU - Brutti, Alessio

PY - 2016/9/1

Y1 - 2016/9/1

N2 - Speech signals captured by distant microphones in enclosures are typically deteriorated by reverberation and background noise. Commonly, the quality of the signals is enhanced applying delay and sum beamforming (or variants) to a microphone array. However, under particular conditions, the multi-path acoustic propagation leading to reverberation is not completely detrimental and can be used in a constructive way. In this direction, mirrored (virtual) microphones have been successfully applied in various research areas. In addition, the majority of naturally occurring sound sources, such as the human speaker, presents a certain degree of radiation directivity, which, coupled with data-independent beamforming, has been shown to slightly increase the captured speech quality.Building upon the concepts of environment awareness and the acoustic rake receiver, this paper investigates the use of mirrored microphones, associated to isolated and strong reflections, in combination with source directivity, to further improve the captured speech quality. Real-data gathered with a linear nested array, as well as simulated data, are used to test the proposed scheme, showing superior performance with respect to similar state of the art solutions.

AB - Speech signals captured by distant microphones in enclosures are typically deteriorated by reverberation and background noise. Commonly, the quality of the signals is enhanced applying delay and sum beamforming (or variants) to a microphone array. However, under particular conditions, the multi-path acoustic propagation leading to reverberation is not completely detrimental and can be used in a constructive way. In this direction, mirrored (virtual) microphones have been successfully applied in various research areas. In addition, the majority of naturally occurring sound sources, such as the human speaker, presents a certain degree of radiation directivity, which, coupled with data-independent beamforming, has been shown to slightly increase the captured speech quality.Building upon the concepts of environment awareness and the acoustic rake receiver, this paper investigates the use of mirrored microphones, associated to isolated and strong reflections, in combination with source directivity, to further improve the captured speech quality. Real-data gathered with a linear nested array, as well as simulated data, are used to test the proposed scheme, showing superior performance with respect to similar state of the art solutions.

UR - http://www.iwaenc2016.org/

M3 - Conference contribution

SN - 978-1-5090-2007-2

BT - 15th International Workshop on Acoustic Signal Enhancement (IWAENC)

ER -