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Diaphragm (acoustics)
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<p>In the field of <a href="/facts/Acoustics/2GpQUymy">acoustics</a>, a diaphragm is a <a href="/facts/Transducer/YS7zfv9d">transducer</a> intended to inter-convert mechanical vibrations to sounds, or vice versa. It is commonly constructed of a thin membrane or sheet of various materials, suspended at its edges. The varying air pressure of sound waves imparts mechanical vibrations to the diaphragm which can then be converted to some other type of signal; examples of this type of diaphragm are found in <a href="/facts/Microphone/7YWGlXCl">microphones</a> and the human <a href="/facts/Eardrum/2mHLYSMF">eardrum</a>. Conversely a diaphragm vibrated by a source of energy beats against the air, creating sound waves. Examples of this type of diaphragm are <a href="/facts/Loudspeaker/tqEjnJ2z">loudspeaker</a> cones and <a href="/facts/Earphone/hLd5e4Kv">earphone</a> diaphragms and are found in <a href="/facts/Air_horn/Sxf6hdqL">air horns</a>. </p>