Category talk:Echo (acoustics)

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I - and others - observe that when a musical performance ends, the echo of the last chord appears to rise in pitch by up to a quarter tone while the echo decays. This effect appears to be independent of the type of performance - orchestral or choral. I am tempted to assume that this is related to what is known in electro-acoustic circles as Space Echo, but I cannot see why this should occur.

Any help would be gratefully received!— Preceding unsigned comment added by Richardpalmer42 (talk • contribs) 3 October 2013‎ (UTC)