Influence of microphone housing on the directional response of piezoelectric MEMS microphones inspired by Ormia ochracea
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 belo...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Published: |
IEEE
2017
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| Subjects: | |
| Online Access: | https://eprints.nottingham.ac.uk/44260/ |
| _version_ | 1848796874238066688 |
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| author | Bauer, Ralf Zhang, Yansheng Jackson, Joseph C. Whitmer, William M. Brimijoin, W. Owen Akeroyd, Michael A. Uttamchandani, Deepak Windmill, James F.C. |
| author_facet | Bauer, Ralf Zhang, Yansheng Jackson, Joseph C. Whitmer, William M. Brimijoin, W. Owen Akeroyd, Michael A. Uttamchandani, Deepak Windmill, James F.C. |
| author_sort | Bauer, Ralf |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | 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. 7x7x2.5 mm3 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 configuration 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 geometries and their influence on acoustic behavior for bio-inspired directional microphones. |
| first_indexed | 2025-11-14T19:54:55Z |
| format | Article |
| id | nottingham-44260 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:54:55Z |
| publishDate | 2017 |
| publisher | IEEE |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-442602020-05-04T18:55:37Z https://eprints.nottingham.ac.uk/44260/ Influence of microphone housing on the directional response of piezoelectric MEMS microphones inspired by Ormia ochracea Bauer, Ralf Zhang, Yansheng Jackson, Joseph C. Whitmer, William M. Brimijoin, W. Owen Akeroyd, Michael A. Uttamchandani, Deepak Windmill, James F.C. 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. 7x7x2.5 mm3 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 configuration 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 geometries and their influence on acoustic behavior for bio-inspired directional microphones. IEEE 2017-07-17 Article PeerReviewed Bauer, Ralf, Zhang, Yansheng, Jackson, Joseph C., Whitmer, William M., Brimijoin, W. Owen, Akeroyd, Michael A., Uttamchandani, Deepak and Windmill, James F.C. (2017) Influence of microphone housing on the directional response of piezoelectric MEMS microphones inspired by Ormia ochracea. IEEE Sensors Journal . ISSN 1530-437X (In Press) 3D-printing acoustic response bio-inspired directional microphones MEMS microphone housings |
| spellingShingle | 3D-printing acoustic response bio-inspired directional microphones MEMS microphone housings Bauer, Ralf Zhang, Yansheng Jackson, Joseph C. Whitmer, William M. Brimijoin, W. Owen Akeroyd, Michael A. Uttamchandani, Deepak Windmill, James F.C. Influence of microphone housing on the directional response of piezoelectric MEMS microphones inspired by Ormia ochracea |
| title | Influence of microphone housing on the directional response of piezoelectric MEMS microphones inspired by Ormia ochracea |
| title_full | Influence of microphone housing on the directional response of piezoelectric MEMS microphones inspired by Ormia ochracea |
| title_fullStr | Influence of microphone housing on the directional response of piezoelectric MEMS microphones inspired by Ormia ochracea |
| title_full_unstemmed | Influence of microphone housing on the directional response of piezoelectric MEMS microphones inspired by Ormia ochracea |
| title_short | Influence of microphone housing on the directional response of piezoelectric MEMS microphones inspired by Ormia ochracea |
| title_sort | influence of microphone housing on the directional response of piezoelectric mems microphones inspired by ormia ochracea |
| topic | 3D-printing acoustic response bio-inspired directional microphones MEMS microphone housings |
| url | https://eprints.nottingham.ac.uk/44260/ |