Determining Sound Source Orientation from Source Directivity and Real Multi-Microphone Recordings: Experimental Comparisons using both Analytical and Measured Directivity Models

Francesco Guarato, John Hallam, Dieter Vanderelst

Publikation: Bidrag til bog/antologi/rapport/konference-proceedingKonferencebidrag i proceedingsForskning

Resumé

This paper presents a method for estimating the
orientation of a directional sound source emitting a broadband
acoustic signal being recorded by a microphone array, given
source directivity, microphone positions with respect to the
source and recordings of the call. Such a method has been
tested to evaluate its precision in an ordinary laboratory
environment, by placing a Polaroid transducer at several known
positions and orientations and recording calls it emitted with
a microphone array. Experiments discussed herein focus on
accuracy in estimating the true transducer orientation for
both an analytical directivity model and when directivity is
provided by measurements. Results show that method estimates
orientations very close to the true ones, and that analytical
directivity is a good approximation of the measured one. We
also point out the limits we must respect to make the method
precise. The signal emitted by the source is broadband, like the
signals many bats use while echolocating. Indeed, our intended
final application of the method is to estimate the orientations
a bat assumes while hunting over water.
OriginalsprogEngelsk
TitelProc. Towards Autonomous Robotic Systems (TAROS)
RedaktørerT. Kyriacou et al
ForlagUniversity of Ulster
Publikationsdatosep. 2009
Sider33-40
StatusUdgivet - sep. 2009
BegivenhedTowards Autonomous Robotic Systems, TAROS 2009 - Londonderry, Storbritannien
Varighed: 31. aug. 20093. sep. 2009
Konferencens nummer: 10

Konference

KonferenceTowards Autonomous Robotic Systems, TAROS 2009
Nummer10
LandStorbritannien
ByLondonderry
Periode31/08/200903/09/2009

Fingeraftryk

Microphones
Acoustic waves
Transducers
Analytical models
Water
Experiments

Bibliografisk note

F. Guarato, J. Hallam and D. Vanderelst, "Determining sound source orientation from source directivity and real multi-microphone recordings: experimental comparisons using both analytical and measured directivity models", In: Proc. Towards Autonomous Robotic Systems (TAROS), ed: T. Kyriacou et al., ISRC, Univ. Ulster, pp 33--40, Sept. 2009

Citer dette

Guarato, F., Hallam, J., & Vanderelst, D. (2009). Determining Sound Source Orientation from Source Directivity and Real Multi-Microphone Recordings: Experimental Comparisons using both Analytical and Measured Directivity Models. I T. Kyriacou et al (red.), Proc. Towards Autonomous Robotic Systems (TAROS) (s. 33-40). University of Ulster.
Guarato, Francesco ; Hallam, John ; Vanderelst, Dieter. / Determining Sound Source Orientation from Source Directivity and Real Multi-Microphone Recordings: Experimental Comparisons using both Analytical and Measured Directivity Models. Proc. Towards Autonomous Robotic Systems (TAROS). red. / T. Kyriacou et al. University of Ulster, 2009. s. 33-40
@inproceedings{703de1b59615431abdbdbeff581506e3,
title = "Determining Sound Source Orientation from Source Directivity and Real Multi-Microphone Recordings: Experimental Comparisons using both Analytical and Measured Directivity Models",
abstract = "This paper presents a method for estimating theorientation of a directional sound source emitting a broadbandacoustic signal being recorded by a microphone array, givensource directivity, microphone positions with respect to thesource and recordings of the call. Such a method has beentested to evaluate its precision in an ordinary laboratoryenvironment, by placing a Polaroid transducer at several knownpositions and orientations and recording calls it emitted witha microphone array. Experiments discussed herein focus onaccuracy in estimating the true transducer orientation forboth an analytical directivity model and when directivity isprovided by measurements. Results show that method estimatesorientations very close to the true ones, and that analyticaldirectivity is a good approximation of the measured one. Wealso point out the limits we must respect to make the methodprecise. The signal emitted by the source is broadband, like thesignals many bats use while echolocating. Indeed, our intendedfinal application of the method is to estimate the orientationsa bat assumes while hunting over water.",
keywords = "orientation, estimation, robotics",
author = "Francesco Guarato and John Hallam and Dieter Vanderelst",
note = "F. Guarato, J. Hallam and D. Vanderelst, {"}Determining sound source orientation from source directivity and real multi-microphone recordings: experimental comparisons using both analytical and measured directivity models{"}, In: Proc. Towards Autonomous Robotic Systems (TAROS), ed: T. Kyriacou et al., ISRC, Univ. Ulster, pp 33--40, Sept. 2009",
year = "2009",
month = "9",
language = "English",
pages = "33--40",
editor = "{Kyriacou et al}, T.",
booktitle = "Proc. Towards Autonomous Robotic Systems (TAROS)",
publisher = "University of Ulster",

}

Guarato, F, Hallam, J & Vanderelst, D 2009, Determining Sound Source Orientation from Source Directivity and Real Multi-Microphone Recordings: Experimental Comparisons using both Analytical and Measured Directivity Models. i T Kyriacou et al (red.), Proc. Towards Autonomous Robotic Systems (TAROS). University of Ulster, s. 33-40, Towards Autonomous Robotic Systems, TAROS 2009, Londonderry, Storbritannien, 31/08/2009.

Determining Sound Source Orientation from Source Directivity and Real Multi-Microphone Recordings: Experimental Comparisons using both Analytical and Measured Directivity Models. / Guarato, Francesco; Hallam, John; Vanderelst, Dieter.

Proc. Towards Autonomous Robotic Systems (TAROS). red. / T. Kyriacou et al. University of Ulster, 2009. s. 33-40.

Publikation: Bidrag til bog/antologi/rapport/konference-proceedingKonferencebidrag i proceedingsForskning

TY - GEN

T1 - Determining Sound Source Orientation from Source Directivity and Real Multi-Microphone Recordings: Experimental Comparisons using both Analytical and Measured Directivity Models

AU - Guarato, Francesco

AU - Hallam, John

AU - Vanderelst, Dieter

N1 - F. Guarato, J. Hallam and D. Vanderelst, "Determining sound source orientation from source directivity and real multi-microphone recordings: experimental comparisons using both analytical and measured directivity models", In: Proc. Towards Autonomous Robotic Systems (TAROS), ed: T. Kyriacou et al., ISRC, Univ. Ulster, pp 33--40, Sept. 2009

PY - 2009/9

Y1 - 2009/9

N2 - This paper presents a method for estimating theorientation of a directional sound source emitting a broadbandacoustic signal being recorded by a microphone array, givensource directivity, microphone positions with respect to thesource and recordings of the call. Such a method has beentested to evaluate its precision in an ordinary laboratoryenvironment, by placing a Polaroid transducer at several knownpositions and orientations and recording calls it emitted witha microphone array. Experiments discussed herein focus onaccuracy in estimating the true transducer orientation forboth an analytical directivity model and when directivity isprovided by measurements. Results show that method estimatesorientations very close to the true ones, and that analyticaldirectivity is a good approximation of the measured one. Wealso point out the limits we must respect to make the methodprecise. The signal emitted by the source is broadband, like thesignals many bats use while echolocating. Indeed, our intendedfinal application of the method is to estimate the orientationsa bat assumes while hunting over water.

AB - This paper presents a method for estimating theorientation of a directional sound source emitting a broadbandacoustic signal being recorded by a microphone array, givensource directivity, microphone positions with respect to thesource and recordings of the call. Such a method has beentested to evaluate its precision in an ordinary laboratoryenvironment, by placing a Polaroid transducer at several knownpositions and orientations and recording calls it emitted witha microphone array. Experiments discussed herein focus onaccuracy in estimating the true transducer orientation forboth an analytical directivity model and when directivity isprovided by measurements. Results show that method estimatesorientations very close to the true ones, and that analyticaldirectivity is a good approximation of the measured one. Wealso point out the limits we must respect to make the methodprecise. The signal emitted by the source is broadband, like thesignals many bats use while echolocating. Indeed, our intendedfinal application of the method is to estimate the orientationsa bat assumes while hunting over water.

KW - orientation

KW - estimation

KW - robotics

M3 - Article in proceedings

SP - 33

EP - 40

BT - Proc. Towards Autonomous Robotic Systems (TAROS)

A2 - Kyriacou et al, T.

PB - University of Ulster

ER -

Guarato F, Hallam J, Vanderelst D. Determining Sound Source Orientation from Source Directivity and Real Multi-Microphone Recordings: Experimental Comparisons using both Analytical and Measured Directivity Models. I Kyriacou et al T, red., Proc. Towards Autonomous Robotic Systems (TAROS). University of Ulster. 2009. s. 33-40