Probably the most acquainted examples of acoustic resonators are in musical devices. Each musical instrument has resonators. Some generate the sound immediately, such because the wood bars in a xylophone, the pinnacle of a drum, the strings in stringed devices, and the pipes in an organ. Some modify the sound by enhancing particular frequencies, such as the sound box of a guitar or violin. Organ pipes, the bodies of woodwinds, and the sound boxes of stringed devices are examples of acoustic cavity resonators. The exhaust pipes in automobile exhaust programs are designed as acoustic resonators that work with the muffler
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