Inverse Determination of Acoustic Properties of Acoustic Ventilation Cloth (Woven and Non-Woven) by Particle Swarm Optimization and Estimation of Its Effect on the Frequency Response of the Microspeaker
In this work, microspeaker frequency response was determined based on measurement and simulation. The vents after the rear chamber of the microspeaker were covered with ventilation cloths. Two types of ventilation cloths (acoustic cloths) are commonly used in electroacoustic products, non-woven and...
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MDPI AG
2022-08-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/12/17/8588 |
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| author | Yu-Cheng Liu Suryappa Jayappa Pawar Jin-Huang Huang |
| author_facet | Yu-Cheng Liu Suryappa Jayappa Pawar Jin-Huang Huang |
| author_sort | Yu-Cheng Liu |
| collection | DOAJ |
| description | In this work, microspeaker frequency response was determined based on measurement and simulation. The vents after the rear chamber of the microspeaker were covered with ventilation cloths. Two types of ventilation cloths (acoustic cloths) are commonly used in electroacoustic products, non-woven and woven. Non-woven cloths (5 nos.) consist of irregular meshes and woven cloths (5 nos.) consist of regular meshes. The equivalent circuit model of the microspeaker was formulated by considering five types each of non-woven and woven ventilation cloths. The acoustic properties of the ventilation cloths were estimated from the measured frequency response of the microspeaker and by subsequent use of particle swarm optimization algorithm. Estimated value of the acoustic impedances of the ventilation cloths were used in an equivalent circuit model of the microspeaker for the simulated frequency responses and subsequently compared with the anechoic chamber measurements. Based on the results, the equivalent circuit adequately simulated the measured frequency response of the microspeaker and the estimations of the acoustic impedances of the ventilation cloths were in good agreement with the measured frequency responses of the microspeaker. |
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| language | English |
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| publishDate | 2022-08-01 |
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| spelling | doaj.art-0e5c53990e9d4fabb829c48c5df0ef942023-11-23T12:42:11ZengMDPI AGApplied Sciences2076-34172022-08-011217858810.3390/app12178588Inverse Determination of Acoustic Properties of Acoustic Ventilation Cloth (Woven and Non-Woven) by Particle Swarm Optimization and Estimation of Its Effect on the Frequency Response of the MicrospeakerYu-Cheng Liu0Suryappa Jayappa Pawar1Jin-Huang Huang2Master’s Program of Electro-Acoustics, Feng Chia University, No. 100, Wenhwa Rd., Taichung 40724, TaiwanDepartment of Applied Mechanics, Motilal Nehru National Institute of Technology Allahabad, Prayagraj 211004, Uttar Pradesh, IndiaMaster’s Program of Electro-Acoustics and Department of Mechanical and Computer-Aided Engineering, Feng Chia University, No. 100, Wenhwa Rd., Taichung 40724, TaiwanIn this work, microspeaker frequency response was determined based on measurement and simulation. The vents after the rear chamber of the microspeaker were covered with ventilation cloths. Two types of ventilation cloths (acoustic cloths) are commonly used in electroacoustic products, non-woven and woven. Non-woven cloths (5 nos.) consist of irregular meshes and woven cloths (5 nos.) consist of regular meshes. The equivalent circuit model of the microspeaker was formulated by considering five types each of non-woven and woven ventilation cloths. The acoustic properties of the ventilation cloths were estimated from the measured frequency response of the microspeaker and by subsequent use of particle swarm optimization algorithm. Estimated value of the acoustic impedances of the ventilation cloths were used in an equivalent circuit model of the microspeaker for the simulated frequency responses and subsequently compared with the anechoic chamber measurements. Based on the results, the equivalent circuit adequately simulated the measured frequency response of the microspeaker and the estimations of the acoustic impedances of the ventilation cloths were in good agreement with the measured frequency responses of the microspeaker.https://www.mdpi.com/2076-3417/12/17/8588anechoic chamber measurementequivalent circuit methodfrequency responsemicrospeakerparticle swarm optimizationventilation cloth |
| spellingShingle | Yu-Cheng Liu Suryappa Jayappa Pawar Jin-Huang Huang Inverse Determination of Acoustic Properties of Acoustic Ventilation Cloth (Woven and Non-Woven) by Particle Swarm Optimization and Estimation of Its Effect on the Frequency Response of the Microspeaker Applied Sciences anechoic chamber measurement equivalent circuit method frequency response microspeaker particle swarm optimization ventilation cloth |
| title | Inverse Determination of Acoustic Properties of Acoustic Ventilation Cloth (Woven and Non-Woven) by Particle Swarm Optimization and Estimation of Its Effect on the Frequency Response of the Microspeaker |
| title_full | Inverse Determination of Acoustic Properties of Acoustic Ventilation Cloth (Woven and Non-Woven) by Particle Swarm Optimization and Estimation of Its Effect on the Frequency Response of the Microspeaker |
| title_fullStr | Inverse Determination of Acoustic Properties of Acoustic Ventilation Cloth (Woven and Non-Woven) by Particle Swarm Optimization and Estimation of Its Effect on the Frequency Response of the Microspeaker |
| title_full_unstemmed | Inverse Determination of Acoustic Properties of Acoustic Ventilation Cloth (Woven and Non-Woven) by Particle Swarm Optimization and Estimation of Its Effect on the Frequency Response of the Microspeaker |
| title_short | Inverse Determination of Acoustic Properties of Acoustic Ventilation Cloth (Woven and Non-Woven) by Particle Swarm Optimization and Estimation of Its Effect on the Frequency Response of the Microspeaker |
| title_sort | inverse determination of acoustic properties of acoustic ventilation cloth woven and non woven by particle swarm optimization and estimation of its effect on the frequency response of the microspeaker |
| topic | anechoic chamber measurement equivalent circuit method frequency response microspeaker particle swarm optimization ventilation cloth |
| url | https://www.mdpi.com/2076-3417/12/17/8588 |
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