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Acoustic resonance is also important for hearing. For example, resonance of a stiff structural element, called the basilar membrane within the cochlea of the inner ear allows hair cells on the membrane to detect sound. (For mammals the membrane has tapering resonances across its length so that high frequencies are concentrated on one end and ...
The most familiar examples of acoustic resonators are in musical instruments. Every musical instrument has resonators. Every musical instrument has resonators. Some generate the sound directly, such as the wooden bars in a xylophone , the head of a drum , the strings in stringed instruments , and the pipes in an organ .
In an SMR structure acoustic mirror(s) providing an acoustic isolation is constructed between the resonator and the surrounding like the substrate. The acoustic mirror (such as a Bragg reflector) typically consists of an odd total number of materials with alternating layers of high and low acoustic impedance materials. The thickness of the ...
Helmholtz resonators are also used to build acoustic liners for reducing the noise of aircraft engines, for example. These acoustic liners are made of two components: a simple sheet of metal (or other material) perforated with little holes spaced out in a regular or irregular pattern; this is called a resistive sheet;
Thin-film bulk acoustic resonator This page was last edited on 16 October 2018, at 13:26 (UTC). Text is available under the Creative Commons Attribution ...
A tuning fork is an acoustic resonator in the form of a two-pronged fork with the prongs formed from a U-shaped bar of elastic metal (usually steel). It resonates at a specific constant pitch when set vibrating by striking it against a surface or with an object, and emits a pure musical tone once the high overtones fade out. A tuning fork's ...
Examples of resonating type bass traps include a rigid container with one or more portholes or slots (i.e. Helmholtz resonator), or a rigid container with a flexible diaphragm (i.e. membrane absorber). Resonating type bass trap achieves absorption of sound by sympathetic vibration of some free element of the device with the air volume of the room.
The Q factor is a parameter that describes the resonance behavior of an underdamped harmonic oscillator (resonator). Sinusoidally driven resonators having higher Q factors resonate with greater amplitudes (at the resonant frequency) but have a smaller range of frequencies around that frequency for which they resonate; the range of frequencies for which the oscillator resonates is called the ...