Projects per year
Abstract
The influence of custom microphone housings on the acoustic directionality and frequency response of a multi - band bio - inspired MEMS microphone is presented. The 3.2mm by 1.7mm piezoelectric MEMS microphone, fabricated by a cost - effective multi - user process, has four frequency bands of operation below 10 kHz, with a desired first order directionality for all four bands. 7x 7x2.5 mm 3 3D - printed bespoke housings with varying acoustic access to the backside of the microphone membrane are investigated through simulation and experiment with respect to their influence on the directionality and frequency response to sound stimulus. Results show a clear link between directionality and acoustic access to the back cavity of the microphone. Further, there was a change in direction of the first order directionality with reduced height in this back cavity acoustic access. The required con figuration for creating an identical directionality for all four frequency bands is investigated along with the influence of reducing the symmetry of the acoustic back cavity access. This work highlights the overall requirement of considering housing geome tries and their influence on acoustic behavior for bio - inspired directional microphones
Original language | English |
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Pages (from-to) | 5529-5536 |
Number of pages | 8 |
Journal | IEEE Sensors Journal |
Volume | 17 |
Issue number | 17 |
Early online date | 20 Jul 2017 |
DOIs | |
Publication status | Published - 1 Sept 2017 |
Keywords
- 3D printing
- acoustic response
- bio-inspired directional microphones
- MEMS
- microphone housings
Fingerprint
Dive into the research topics of 'Influence of microphone housing on the directional response of piezoelectric MEMS microphones inspired by Ormia ochracea'. Together they form a unique fingerprint.Profiles
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Ralf Bauer
- Electronic And Electrical Engineering - Senior Lecturer
- Health and Wellbeing
Person: Academic
Projects
- 2 Finished
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Novel directional microphone design for speech enhancement in complex environments
Windmill, J., Jackson, J. & Uttamchandani, D.
EPSRC (Engineering and Physical Sciences Research Council)
1/07/15 → 28/02/19
Project: Research
Datasets
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3D-printed housing influence on directional acoustic response of MEMS microphone
Bauer, R. (Creator), Windmill, J. (Creator) & Zhang, Y. (Creator), University of Strathclyde, 21 Feb 2017
DOI: 10.15129/fc076d32-f961-407e-90c1-d1f06b1c99fa
Dataset
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A MEMS microphone inspired by Ormia for spatial sound detection
Zhang, Y., Bauer, R., Whitmer, W. M., Jackson, J. C., Windmill, J. F. C. & Uttamchandani, D., 26 Apr 2018. 4 p.Research output: Contribution to conference › Paper › peer-review
Open AccessFile14 Citations (Scopus)80 Downloads (Pure) -
Development of a biologically inspired MEMS microphone
Zhang, Y., Bauer, R., Whitmer, W. M., Brimijoin, W. O., Uttamchandani, D., Windmill, J. F. C. & Jackson, J. C., 25 Dec 2017. 3 p.Research output: Contribution to conference › Paper › peer-review
Open AccessFile6 Citations (Scopus)86 Downloads (Pure) -
New ormia-inspired directional MEMS microphone operating in a low frequency band
Zhang, Y., Bauer, R., Windmill, J. F., Uttamchandani, D. & Jackson, J., 10 Jun 2017, In: Journal of the Acoustical Society of America. 141, 5, 1 p., 3794.Research output: Contribution to journal › Conference Contribution › peer-review
Open AccessFile60 Downloads (Pure)