Acoustic resonance is an enhanced response when an acoustic system is driven near one of its natural oscillation frequencies. Reflections and boundary conditions select standing waves, while damping limits the steady response and broadens its frequency peak. Resonance concerns the response to a drive; a large sound at one frequency alone does not identify the mechanism.
A classic measurement holds a vibrating tuning fork above an air column whose lower end is closed by water. Varying the water level changes the column length. In the ideal narrow-tube approximation, pressure has an antinode at the closed end and a node at the open end, givingwhere is speed of sound and includes an open-end correction. Successive resonant lengths at fixed frequency differ by approximately half a wavelength. If a 500 Hz fork gives successive peaks 0.34 m apart, . Using the difference reduces a common end-correction error.[ref]
Airspace: Speed of Sound Grades 9-12 by NASA. Measuring the Speed of Sound Using Resonance, water-column/tuning-fork procedure
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Acoustic resonance is a phenomenon that occurs when an object or system vibrates at specific frequencies, known as its natural frequencies, in response to an external sound wave or acoustic energy. When the frequency of the external sound wave matches one of these natural frequencies, the amplitude of the vibrations increases significantly, leading to a resonant response.