Recommendable reverberation times range from 2 seconds down to 0.35 seconds by room type
Evidence
Bigger spaces tend to have longer reverberation times and well-furnished spaces tend to have shorter reverberation times. Reverberation time can vary from about 0.2 of a second for a small well-furnished living room to about 10 seconds for a large glass and stone cathedral. — David Howard, Jamie Angus, coustics and Psychoacoustics, 1784 (
#corroborates, via linked claim)
W. C. Sabine, the acoustician, has defined reverberation time technically. It is the time that elapses from the instant a sound source is switched off until its energy decays to one millionth of its original strength (a drop of 60 decibels). As far as the ear is concerned, it is the time it takes for a sound to melt and be lost in the ambient noise. Echo differs from reverberation in that it is a repetition or partial repetition of a sound, due to reflection off a distant surface. Reverberation is also reflected sound but no separate repetitions of the original are distinguishable. — Schafer, Murray R, The Soundscape- Our Sonic Environment…, 446 (
#expands, via linked claim)
Categorization
- XREF: connects to: Reverberation time spans from 0.2 seconds to 10 seconds across rooms — David Howard, Jamie Angus, coustics and Psychoacoustics, 1784; Concert hall reverberation times range from one to two seconds; Smaller rooms produce louder reverberant fields but shorter reverberation times — David Howard, Jamie Angus, coustics and Psychoacoustics, 1806 (+4 more)
Broader Connections
- Concert hall reverberation times range from one to two seconds
#qualifies(0.85) - Reverberation time spans from 0.2 seconds to 10 seconds across rooms
#corroborates(0.82) — David Howard, Jamie Angus, coustics and Psychoacoustics, 1784 - Reverberation time is defined as a 60-decibel energy decay
#expands(0.80) — Schafer, Murray R, The Soundscape- Our Sonic Environment…, 446 - Smaller rooms produce louder reverberant fields but shorter reverberation times
#expands(0.72) — David Howard, Jamie Angus, coustics and Psychoacoustics, 1806