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高周波放電を用いたイオンマイクロホンの基礎研究 On the Study of a RF Discharge Ionic Microphone 秋野, 裕 Akino, Hiroshi 下川, 博文 Shimokawa, Hirofumi ionic microphone RF discharge atmospheric plasma particle velocity application/pdf This study examined about possibility of the ionic microphone, which works with RF discharge. RF discharge that is circuit configuration of harmonic oscillator produces plasma, and it moves at particle velocity of the sound wave. Consequently oscillation frequency deviation corresponds to the particle velocity of the sound wave. It was possible to obtain the audio signal, when the modulated signal was demodulated. This ionic microphone could response in audio frequency range. Particle velocity frequency response was higher than the ribbon microphone. 神奈川工科大学 2010-03-20 jpn departmental bulletin paper VoR https://doi.org/10.34411/00001049 http://hdl.handle.net/10368/21407 https://kait.repo.nii.ac.jp/records/1056 10.34411/00001049 AN10074179 09161902 神奈川工科大学研究報告.B,理工学編 34 44 49 https://kait.repo.nii.ac.jp/record/1056/files/kkb-034-008.pdf application/pdf 1.2 MB 2012-03-01