A note on the audio sound power generated by a parametric array loudspeaker

Understanding the sound power characteristics of parametric array loudspeakers (PALs) poses a unique challenge due to the nonlinear process involved. This work addresses this issue by employing the spherical convolution directivity model to obtain the far field intensity, which is then used to calculate the sound power radiated by a PAL. The results reveal that the audio sound power is approximately proportional to the square of the audio frequency and the aperture size, while inversely proportional to the ultrasound frequency. Additionally, the conversion efficiency from ultrasound to audio sound is found to be generally below 0.15% for typical configurations.

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Work Title A note on the audio sound power generated by a parametric array loudspeaker
Access
Open Access
Creators
  1. Mengtong Li
  2. Jiaxin Zhong
  3. Yun Jing
  4. Jing Lu
License In Copyright (Rights Reserved)
Work Type Article
Publisher
  1. Journal of the Acoustical Society of America
Publication Date December 1, 2023
Publisher Identifier (DOI)
  1. https://doi.org/10.1121/10.0023955
Deposited December 14, 2024

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Version 1
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  • Created
  • Added A_note_on_the_audio_sound_power_generated_by_a_parametric_array_loudspeaker.pdf
  • Added Creator Mengtong Li
  • Added Creator Jiaxin Zhong
  • Added Creator Yun Jing
  • Added Creator Jing Lu
  • Published
  • Updated