VHF領域の聴覚閾値計測のためのシステムの構築

カテゴリ: 研究会(論文単位)

論文No: IS25016

グループ名: 【C】電子・情報・システム部門 情報システム研究会

発行日: 2025/02/22

タイトル(英語): Construction of a system for measuring hearing thresholds in the VHF region.

著者名: 上田 麻理(神奈川工科大学),近藤 奏海(神奈川工科大学),田中 哲雄(神奈川工科大学),FIRDAUS Zuhal(神奈川工科大学)

著者名(英語): Mari Ueda(Kanagawa Institute of Technology),Kanami Kondo(Kanagawa Institute of Technology),Tetsuo Tanaka(Kanagawa Institute of Technology),Zuhal FIRDAUS(Institute of Science Tokyo)

キーワード: 空中超音波|可聴閾値|空中超音波の曝露|パラボラアンテナ|Ｍ系列相関法|Airborne ultrasound|hearing threshold|Exposure to airborne ultrasound|Parabolic antenna|M-sequence correlation method

要約(日本語): ヒトの高周波領域の可聴閾値を取得するためにパラボラを用いた高周波領域音曝露システムの構築及び，M系列相関法による騒音下での高周波領域の閾値計測のためのwebアプリ構築を行ったので報告する．

要約(英語): Although audible frequency for human typically ranges between 20 Hz to 20 kHz, thereare several reports on hearing ability in the range of very high frequency (VHF, 16-32 kHz). It should be important to clarify the hearing threshold in VHF region. To this end, a VHF sound source has been fabricated in this report to generate enough level of sound pressure up to 110 dB from 15 to 25 kHz. The authors utilizedan offset parabolic reflector designed for receiving satellite broadcasting signals. The reflector was illuminated with a commercial tweeter speaker and focuses the VHF sound at_x000D_ one point. The mean SPL of 134.4 dB was successfully obtained over the frequency range. Fluctuation of the SPL was suppressed by changing the applied voltage. To generate higher SPL, we need to use a 2x2 array of tweeters for the source. The fabricated system will be used in studies of human hearing characteristics for VHF sound. We used a constructed system to measure hearing thresholds in the VHF region. We constructed the testing system for this purpose._x000D_

本誌: 2025年2月25日-2025年2月26日情報システム研究会

本誌掲載ページ: 91-96 p

原稿種別: 日本語

PDFファイルサイズ: 1,520 Kバイト