The decay time for listening rooms is typically described using the time it takes for the sound pressure in a room to drop by 20 dBSPL after a sound source stops playing. This is referred to as T20 or RT20.
Term: T20
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The decay time for listening rooms is typically described using the time it takes for the sound pressure in a room to drop by 20 dBSPL after a sound source stops playing. This is referred to as T20 or RT20.