Colouration
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Colouration refers to a property of loudspeakers and other audio equipment that detracts from realistic reproduction. Unlike most defects, which involve failure to reproduce something in the audio signal (such as low frequencies), colouration in loudspeakers results from the speaker continuing to emit sound when the signal stops. The cause is resonance, or energy storage, in any part of the speaker or its enclosure, including reflections within the enclosed airspace.
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