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#1
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Live Music As Reference?
"Arny Krueger" wrote in message
... snip long Audio Empire / Arny Krueger discussion at request of moderators We can do a lot better than that. For example I just recounted a blind test of loudspeakers wherein two vastly different speakers were said by a distinguished listening panel to be in some sense closely equivalent in terms of sound quality. I happened to discuss the setup for these listening tests with someone who was more intimately involved than I last night, as we drove to and returned from an AES meeting across the state. Obviously the test you are referring to is the one you described here, and the person you were riding with is David Clark. Why not name him? It turns out that electrical equalization was used in the evaluations. The electrical equalization was performed based on an acoustic measuring device called "Perceptual Transfer Function (PTF) measurement system", which is further described he http://www.aes.org/sections/reports/?ID=46 http://www.sae.org/technical/papers/2000-01-0075 http://www.aes.org/e-lib/browse.cfm?elib=9942 http://www.umich.edu/~aessec/clark_04_06.html The ability of measurements made using the "Perceptual Transfer Function (PTF) measurement system" to accurately and reliably characterize the performance of loudspeaker systems is thus validated, as it has been validated many other ways and at many other times. There are probably a million or more complex audio systems whose sales price ranges up into the several thousand dollar range, that were designed with heavy reference ton "Perceptual Transfer Function (PTF) measurement system" results, that are in daily use today. They are generally very ranked highly in consumer opinion testing by respected industry opinon survey organizations. You forgot to add that "the above is an infomercial brought to you on behalf of David Clark, inventor of the "Perceptual Transfer Function". And it is interesting to note that the "blind speaker test" under discussion was actually a blind test of a "doctored speaker". Why do I get a sense of ABX DejaVu? |
#2
Posted to rec.audio.high-end
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Live Music As Reference?
"Harry Lavo" wrote in message
"Arny Krueger" wrote in message ... snip long Audio Empire / Arny Krueger discussion at request of moderators We can do a lot better than that. For example I just recounted a blind test of loudspeakers wherein two vastly different speakers were said by a distinguished listening panel to be in some sense closely equivalent in terms of sound quality. I happened to discuss the setup for these listening tests with someone who was more intimately involved than I last night, as we drove to and returned from an AES meeting across the state. Obviously the test you are referring to is the one you described here, and the person you were riding with is David Clark. Why not name him? As usual Harry, your wild speculations are false. David Clark is presently at the London AES. I rode with another person who was also at the speaker tests that I have been describing. FWIW, my fellow traveler is also a happy PTF user/advocate. Clark's presence in London will probably show up in some public AES documents down the road. The AES section meeting I went to in Grand Rapids, likewise. It turns out that electrical equalization was used in the evaluations. The electrical equalization was performed based on an acoustic measuring device called "Perceptual Transfer Function (PTF) measurement system", which is further described he http://www.aes.org/sections/reports/?ID=46 http://www.sae.org/technical/papers/2000-01-0075 http://www.aes.org/e-lib/browse.cfm?elib=9942 http://www.umich.edu/~aessec/clark_04_06.html The ability of measurements made using the "Perceptual Transfer Function (PTF) measurement system" to accurately and reliably characterize the performance of loudspeaker systems is thus validated, as it has been validated many other ways and at many other times. There are probably a million or more complex audio systems whose sales price ranges up into the several thousand dollar range, that were designed with heavy reference ton "Perceptual Transfer Function (PTF) measurement system" results, that are in daily use today. They are generally very ranked highly in consumer opinion testing by respected industry opinon survey organizations. You forgot to add that "the above is an infomercial brought to you on behalf of David Clark, inventor of the "Perceptual Transfer Function". Just the facts. And it is interesting to note that the "blind speaker test" under discussion was actually a blind test of a "doctored speaker". Typical of you Harry to fault us for failing to perform an impossible test, a test in which the two speakers have identical frequency response straight out of their boxes. Why do I get a sense of ABX DejaVu? The false speculations? Yet another demonstration of advanced audio technology? |
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