Research on a novel audio beam loudspeaker based digital signal processor
A novel audio beam loudspeaker based on digital signal processor (DSP) was fabricated by utilizing the nonlinear propagation effects of ultrasonic in the air to generate audible sound with high directivity and controllable space distribution. In terms of the notable Khokhlov-Zabolotskaya-Kuznetsov (...
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| creator | Chen, Min Da-Gui Huang Li-Mei Xu Tian-You Hu Yi Wang |
| description | A novel audio beam loudspeaker based on digital signal processor (DSP) was fabricated by utilizing the nonlinear propagation effects of ultrasonic in the air to generate audible sound with high directivity and controllable space distribution. In terms of the notable Khokhlov-Zabolotskaya-Kuznetsov (KZK) equation, the modulation equation of how to process the audio signal is deduced. Moreover, the ultrasonic transducer array is explored to generate audible sound with high directivity. It is proven that increasing the quantity of transducers in the ultrasonic transducer array to generate audible sound with high directivity and suppress the amplitude of sidelobes is feasible when it is impossible to make the distance between transducers less than or equal to a half of the wavelength of ultrasonic. |
| doi_str_mv | 10.1109/ICMA.2005.1626592 |
| format | Conference Proceeding |
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In terms of the notable Khokhlov-Zabolotskaya-Kuznetsov (KZK) equation, the modulation equation of how to process the audio signal is deduced. Moreover, the ultrasonic transducer array is explored to generate audible sound with high directivity. 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In terms of the notable Khokhlov-Zabolotskaya-Kuznetsov (KZK) equation, the modulation equation of how to process the audio signal is deduced. Moreover, the ultrasonic transducer array is explored to generate audible sound with high directivity. 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In terms of the notable Khokhlov-Zabolotskaya-Kuznetsov (KZK) equation, the modulation equation of how to process the audio signal is deduced. Moreover, the ultrasonic transducer array is explored to generate audible sound with high directivity. It is proven that increasing the quantity of transducers in the ultrasonic transducer array to generate audible sound with high directivity and suppress the amplitude of sidelobes is feasible when it is impossible to make the distance between transducers less than or equal to a half of the wavelength of ultrasonic.</abstract><pub>IEEE</pub><doi>10.1109/ICMA.2005.1626592</doi></addata></record> |
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| identifier | ISSN: 2152-7431 |
| ispartof | IEEE International Conference Mechatronics and Automation, 2005, 2005, Vol.1, p.466-470 Vol. 1 |
| issn | 2152-7431 2152-744X |
| language | eng |
| recordid | cdi_ieee_primary_1626592 |
| source | IEEE Electronic Library (IEL) Conference Proceedings |
| subjects | Acoustic propagation Acoustic transducers Digital signal processing Digital signal processors Loudspeakers Nonlinear equations Signal generators Signal processing Ultrasonic transducer arrays Ultrasonic transducers |
| title | Research on a novel audio beam loudspeaker based digital signal processor |
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