Detection of nonlinearly propagating focused sound emitted from uniform source using a concave receiver.
スポンサーリンク
概要
- 論文の詳細を見る
The property of the fundamental and second harmonic components of the acoustic pressure in the beam emitted from a uniformly excited focusing source, which is detected by a concave receiver put normal to the acoustic axis beyond the focal region, has been investigated for both the cases of the free field and the field with inserted sample. Calculation based on the successive approximation solution for the Khokhlov-Zabolotskaya-Kuznetsov equation is validated through experiments. It has been clarified that the range dependence of the fundamental component amplitude differs from that of the second harmonic, unlike the case of a Gaussian source, and the cancellation of the second harmonic components generated in front of and beyond the focal region is degraded comparing with the case of Gaussian source. The signal experimentally received beyond the sample corresponds fairly well with the theoretical prediction, taking into account the acoustic properties of the inserted sample. However, the result of experimental determination of the <I>B/A</I> utilizing such responses shows slightly poorer agreement with the literature values, due to the less sensitive property of the second harmonic component to the inserted sample.
- 一般社団法人 日本音響学会の論文
一般社団法人 日本音響学会 | 論文
- How large is the individual difference in hearing sensitivity?: Establishment of ISO 28961 on the statistical distribution of hearing thresholds of otologically normal young persons
- Applying generation process model constraint to fundamental frequency contours generated by hidden-Markov-model-based speech synthesis
- Vocal cord vibration in the production of consonants. Observation by means of high-speed digital imaging using a fiberscope.:Observation by means of high-speed digital imaging using a fiberscope
- The early reflections of the impulse response in an auditorium.
- Multiple reflections between rigid plane panels.