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以實驗探討電吉他的電磁學及聲學

Experimental Study on Electromagnetism and Acoustics of an Electric Guitar

摘要


電吉他是熱門音樂中的重要樂器,各種音樂場合也使用了越來越多的電子樂器,使得學生和一般人對電吉他等電子樂器的工作原理很感興趣。本研究將以實驗探討電吉他的物理原理,並且和古典吉他的物理原理比較。研究結果顯示︰電吉他的拾音器是一組磁鐵及線圈,藉由金屬弦的作用而產生聲音,可以做為電磁學中『電流與磁場的交互作用』很好的應用。在聲學方面,電吉他則和古典吉他完全不同,兩者的比較可以幫助學生對於聲音的物理性質有更深入的了解。

關鍵字

吉他 電流 磁場 聲音

並列摘要


Electric guitars are the iconic instrument of rock'n roll and most of the popular music. Due to the popularization of electronic musical instruments, more and more people interest in how electric guitars work. This study focuses on the physics of the electric guitar and the differences between it and the acoustic guitar. To produce sound and turn the vibrations of the strings into electronic signals, there are magnetic pickups in an electric guitar instead of the hollow resonating cavity found in the acoustic guitar. This study could help students to learn electromagnetism and acoustics more deeply and enjoyably.

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