Effect of a variation in source pressure distribution on nonlinear sound field

• KAWASHIMA Hajime

  Department of Electronic Engineering, The University of Electro- Communications

• AOKI Kenichi

  Department of Electronic Engineering, The University of Electro- Communications

• KAMAKURA Tomoo

  Department of Electronic Engineering, The University of Electro- Communications

Bibliographic Information

Other Title

• 音源面音圧分布の不均一性が非線形音場特性に与える影響

Abstract

The influences of the primary and secondary waves in finite-amplitude sound beams from an ultrasound source with a randomly distributed pressure amplitude have been investigated. A straightforward method for theoretical prediction along and across the beam axis is given to compare with experiment. The source is consist of 256 small-size transducers, which are individually driven by electric signals of random amplitude. The fluctuations of all frequency components including the parametric signals are decreased with propagation distance. The experimental results obtained are almost consistent with the theoretical estimates.

Journal

• IEICE technical report. Ultrasonics

  IEICE technical report. Ultrasonics 98 (530), 35-40, 1999-01-22

  The Institute of Electronics, Information and Communication Engineers

Keywords

• ultrasound
• nonlinear sound field
• parametric array
• combination wave

Details

• CRID: 1570572702430236160
• NII Article ID: 110003188151
• NII Book ID: AN1001290X
• Text Lang: ja
• Data Source:
  • CiNii Articles