running time – sound reflections
A
running time – sound reflections
B
path differences Δs [m] Direct sound – first reflections Δt = 20 ms v = 340 m/s → speed of sound (in air) 340 · 0.02 = 6.8 m Sound detour
Delay
Effect
0.3–7 m
0.8–20 ms
Early interferences should be suppressed, as they colour the sound unpleasantly
7–17 m
20–50 ms
Range for speech
7–27 m
20–80 ms
Range for music
7–34 m
20–100 ms
Maximum range of accumulation by the ear
> 34 m
> 100 ms
Reflexions are perceived as disturbing echos
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11.1.2010 11:11:41 Uhr