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RE: Echo threshold

>5 milliseconds is the point at which fusion between the original source and its reflection no longer occurs in a significant number of listeners.<

On their German site Audio Physic specifically refer to the time window for sound source localisation, not echo thresholds for clicks: "only the first 5 ms are used for source localisation, everything after that is suppressed". If by that they actually mean echo threshold, then why for clicks, why not for noise, or speech, or music?


>As you can see, 5 msecs is a fairly optimistic figure. Better results will be achieved if reflections are suppressed for a longer period.<

Figures often mentioned are 20 ms/20 dB, or 15 ms/10 dB. However, apart from some indications there is no thorough research that I’m aware of showing that in the 2-channel stereo case, using music as signal, first reflections are disturbing as a matter of principle.


Klaus

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