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Propeller Head Plaza Technical and scientific discussion of amps, cables and other topics. |
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Propeller Head Plaza Technical and scientific discussion of amps, cables and other topics. |
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In Reply to: Hey EVERYBODY! YOU be da judge... "Skirting the issue") posted by clarkjohnsen on May 21, 2003 at 16:10:55:
Well, folks! Let me give you a semi rundown on audible phase shift and 'absolute phase'. Back before I was born, and Paul Klipsch attended college, the ear was thought to be 'phase deaf'. This started in the 19th century and was called: "Ohm's law of acoustics. ref. 'Science and Music' Sir James Jeans, 1937 p86
"Differences in phase produce no effect on the ear. This is known as Ohm's law, having been discovered by G.S. Ohm (1787-1854), the discoverer of the still better known electrical law."
How about that, folks?
Anyone who has owned a K-horn knows this isn't completely so.
Back in the late '60's, Richard Heyser mentioned at an AES convention that perhaps a 2 ft or less time difference between speaker drivers (all kinds of phase shift) might be audible in some instances. Interestingly enough, both Richard Heyser and I both owned K-horns and we were good friends with Paul Klipsch. Klipsch got up and said 'bullshit'. I was there, I know.
About 8 years later, a paper on human hearing was put into 'The Preceedings of the IEEE', by M. Schroeder, which opened up a whole world of understanding phase sensitivity in the human ear. Richard Heyser said to me that: "Now everyone will understand", but I retorted: "But, Richard, who reads 'The Proceedings of the IEEE', except you and me?" At the same time, another audio consultant, Ed Long, the inventor of the term "time align" started working on absolute polarity. He found that some music and speech was very polarized, and easily heard. Other stuff was so multimiked, both in and out of polarity, that resolution was difficult, if possible at all. Over the following years, Clark wrote a book on it, and most of my friends are very serious about its effects. Hope this helps.
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Follow Ups
- Re: Hey EVERYBODY! YOU be da judge... "Skirting the issue") - john curl 17:02:59 05/21/03 (4)
- "'Who reads 'The Proceedings of the IEEE', except you and me?'" - clarkjohnsen 07:16:51 05/22/03 (0)
- my k-horns say PWK was wrong....about this issue at least - sunnysal 06:19:24 05/22/03 (2)
- "The difference in sound is so obvious..." - clarkjohnsen 07:27:43 05/22/03 (1)
- I guess my advantage is I have not been corrupted by too much knowledge ;-) - sunnysal 09:05:55 05/22/03 (0)
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