On the Measurement of Sound Power using a Cubical Arrangement of Microphones in a Small Rigid Sphere

Niels  Consten; Theo Campmans; Stéphanie Bertet; Ysbrand Wijnant

On the Measurement of Sound Power using a Cubical Arrangement of Microphones in a Small Rigid Sphere

Niels Consten^*, Theo Campmans, Stéphanie Bertet, Ysbrand Wijnant

^*Corresponding author for this work

Research output: Contribution to conference › Paper › Academic

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Abstract

Recently a new acoustic measurement device, the SonoCat, has become available. The probe consists of 8 MEMSmicrophones, embedded in a small rigid sphere. By accurately calibrating the amplitude and phase mismatch betweenthe microphones, the probe is able to measure the sound intensity accurately. In this paper, we will explain the methodthat has been used to derive the sound intensity from the measured pressure signals and how the effect of the presenceof the sphere has been accounted for. In addition, we will show experimental results, obtained in the anechoic room ofthe University of Twente, comparing the sound intensity, as measured by the probe, with a benchmark sound intensityprobe. The accuracy and precision of the new probe will be discussed.

Original language	English
Publication status	Published - 19 Mar 2019
Event	45. Jahrestagung für Akustik, DAGA 2019 - Rostock, Germany Duration: 18 Mar 2019 → 21 Mar 2019 Conference number: 45 http://2019.daga-tagung.de/

Conference

Conference	45. Jahrestagung für Akustik, DAGA 2019
Abbreviated title	DAGA 2019
Country	Germany
City	Rostock
Period	18/03/19 → 21/03/19
Internet address	http://2019.daga-tagung.de/

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title = "On the Measurement of Sound Power using a Cubical Arrangement of Microphones in a Small Rigid Sphere",

abstract = "Recently a new acoustic measurement device, the SonoCat, has become available. The probe consists of 8 MEMSmicrophones, embedded in a small rigid sphere. By accurately calibrating the amplitude and phase mismatch betweenthe microphones, the probe is able to measure the sound intensity accurately. In this paper, we will explain the methodthat has been used to derive the sound intensity from the measured pressure signals and how the effect of the presenceof the sphere has been accounted for. In addition, we will show experimental results, obtained in the anechoic room ofthe University of Twente, comparing the sound intensity, as measured by the probe, with a benchmark sound intensityprobe. The accuracy and precision of the new probe will be discussed.",

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T1 - On the Measurement of Sound Power using a Cubical Arrangement of Microphones in a Small Rigid Sphere

AU - Consten, Niels

AU - Campmans, Theo

AU - Bertet, Stéphanie

AU - Wijnant, Ysbrand

N1 - Conference code: 45

PY - 2019/3/19

Y1 - 2019/3/19

N2 - Recently a new acoustic measurement device, the SonoCat, has become available. The probe consists of 8 MEMSmicrophones, embedded in a small rigid sphere. By accurately calibrating the amplitude and phase mismatch betweenthe microphones, the probe is able to measure the sound intensity accurately. In this paper, we will explain the methodthat has been used to derive the sound intensity from the measured pressure signals and how the effect of the presenceof the sphere has been accounted for. In addition, we will show experimental results, obtained in the anechoic room ofthe University of Twente, comparing the sound intensity, as measured by the probe, with a benchmark sound intensityprobe. The accuracy and precision of the new probe will be discussed.

AB - Recently a new acoustic measurement device, the SonoCat, has become available. The probe consists of 8 MEMSmicrophones, embedded in a small rigid sphere. By accurately calibrating the amplitude and phase mismatch betweenthe microphones, the probe is able to measure the sound intensity accurately. In this paper, we will explain the methodthat has been used to derive the sound intensity from the measured pressure signals and how the effect of the presenceof the sphere has been accounted for. In addition, we will show experimental results, obtained in the anechoic room ofthe University of Twente, comparing the sound intensity, as measured by the probe, with a benchmark sound intensityprobe. The accuracy and precision of the new probe will be discussed.

M3 - Paper

T2 - 45. Jahrestagung für Akustik, DAGA 2019

Y2 - 18 March 2019 through 21 March 2019

ER -