Category: 12v Glossary
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Haas Effect Haas Effect

Haas Effect

Added by ANT, 03-28-2012 09:35 PM
In 1951, Dr. Helmut Haas examined how the perception of speech is affected in the presence of a single, coherent sound reflection. In sound systems, the signal for loudspeakers placed at distant locations from a stage or intended sound stage may be delayed electronically by an amount equal to the time sound takes to travel through the air from the stage to the distant location, plus about 10 to 20 milliseconds. The first arrival of sound from the source on stage determines perceived localization whereas the slightly later sound from delayed loudspeakers simply increases the perceived sound level without negatively affecting localization.
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