有限振幅正弦波パルス音波の自由空間中での発生法

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概要

• 論文の詳細を見る

• Nonlinear response of acoustic materials to a large amplitude sound depends upon the incident waveform itself. For this reason, we intend to control the radiated waveform of finite amplitude in free space. In order to control the radiated waveform, the waveform control in a pipe was performed by the use of the loudspeaker driven by the computed waveform, and generated wave was radiated from an exponential horn connected to the end of the pipe. However, the observed waveform in free space was different slightly from expected one. As the result of the simulation for the sound transmission through the exponential horn, it became clear that the reflection of the mouth of the horn affected the radiated waveform in free space. Therefore, the waveform control in the pipe was performed by taking account of the effect of the horn and then the result obtained agreed approximately with the waveform expected.

• 社団法人日本音響学会の論文

著者

• 中村 敏明

  Institute Of Scientific And Industrial Research Osaka University

• 中村 昭

  阪大産研

• 中村 昭

  Institute of Scientific and Industrial Research, Osaka University

• 中村 昭

  The Institute Of Scientific And Industrial Research Osaka University

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