Practical Problems in Building Parametric Loudspeakers with Ultrasonic Piezoelectric Emitters

Cadavid J, Novak A. Practical Problems in Building Parametric Loudspeakers with Ultrasonic Piezoelectric Emitters. In: AES Convention 146. Audio Engineering Society; 2019. Paper 10145. Available from: https://aes.org/publications/elibrary-page/?id=20278

@inproceedings{Cadavid2019_20278,
  author = {Cadavid, Jose and Novak, Antonin},
  title = {{Practical Problems in Building Parametric Loudspeakers with Ultrasonic Piezoelectric Emitters}},
  booktitle = {AES Convention 146},
  note = {Paper 10145},
  year = {2019},
  month = mar,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=20278}
}

TY  - CPAPER
TI  - Practical Problems in Building Parametric Loudspeakers with Ultrasonic Piezoelectric Emitters
AU  - Cadavid, Jose
AU  - Novak, Antonin
T2  - AES Convention 146
M1  - Paper 10145
PY  - 2019
DA  - 2019/03/06
UR  - https://aes.org/publications/elibrary-page/?id=20278
PB  - Audio Engineering Society
LA  - en
AB  - In this paper we deal with some practical issues that one can encounter when building a parametric loudspeaker with ultrasonic piezoelectric emitters. We measured several of those transducers (with resonance frequency 40 kHz) available on the market, observing a strong nonlinear behavior of many of them. We also tested a hundred of piezoelectric emitters of the same series and studied the influence of the standard deviation of the resonance frequency and the sensitivity on the performance of the parametric loudspeaker. We conclude that, when constructing a parametric loudspeaker with low-cost piezoelectric emitters, the individual behavior of each of them should be considered. This allows to minimize the effect of their differences and, thus, improve the quality of the sound generated.
ER  -