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Speaker Asylum General speaker questions for audio and home theater. |
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Speaker Asylum General speaker questions for audio and home theater. |
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In Reply to: Re: I have no anti-utilitarian bias posted by Tom Brennan on February 23, 2007 at 15:27:00:
Tom,
From reading their design paper reprinted in the AES Anthology, John Hilliard and his engineers reduced the interdriver time delay to just a little less than one millisecond, whereupon the double-tap of the tap dancer went away. Since 1933, the transient distortions of the entire recording and reproduction chain have been vastly reduced, so even that much time delay today is considered audible, especially when that inter-driver time delay is also constantly changing at different frequencies, via high-order crossovers in the case of speakers. While no amplifier, cable, CD player or recording machine has this problem of varying the time delay with frequency, two examples of varying time delay exist in the musical-instrument world: in the flanger effect box for guitars, and in the controls of a synthesizer. One can sweep a time delay through the frequency range, purposely changing the time-relationships between a fundamental and all of its harmonics, and between the harmonics themselves. The change in sound is plainly audible. It's called 'phasey.'
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Follow Ups
- Re: I have no anti-utilitarian bias - mauimusicman 13:07:02 02/28/07 (0)
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