Home |
Search |
Today's Posts |
#19
Posted to rec.audio.high-end
|
|||
|
|||
You Tell 'Em, Arnie!
"Scott" wrote in message
they were not current for sure. These tests were done in service of the production of his 1994 remasters of the Mercury classical catalog. This particular anomly was discovered when he was testing the physical product from various manufacturers. He discovered that with certain CDPs the CDs from some manufaturers were quite less than transparent compared to the masters. This observation was later confirmed in a number of other tests conducted by other parties. There is an extant AES paper that was presented by Dennis Drake in 1992 presented in its entirety at this URL: http://www.themusiclab.net/aespaper.pdf It says: "As Mrs. Cozart Fine and I began our evaluation sessions in April 1989, it became very clear to us that the A/D conversion process was a very critical step in our production work. As the producer once described it, the sounds from different converters were all different "bowls of soup". We began auditioning every A/D converter that we could obtain. Our test methodology was simple: while playing an original master as source, we would switch between the direct output of our console and the output of the digital chain. The digital chain consisted of the converter under test feeding a Sony 1630 PCM Processor. The final link in the chain was the Apogee filter modified D/A section of the Sony 1630. At times, we would substitute different D/A converters for listening evaluations, but we always returned to the Sony converters or the D/A's of our Panasonic 3500 DAT machine for reference purposes. "Our monitoring set-up consisted of a Cello Audio Suite feeding balanced lines to Cello Performance Amplifiers, which in turn were driving B & W 808 Monitor Loudspeakers. As we compared the various digital converters to the playback of the actual analog source, we found that the soundstage of the orchestra was always reduced in width when listening to the digital chain. We also found that many A/D converters exhibited a strident string sound, unnatural sounding midrange, and a loss of air or ambience around the instruments" This above formal presentation of the relevant so-called Denni Drake tests includes many details that are different from what we have seen presented on RAHE. For one thing, the evaluation was not of CD players, and for another, there is no evidence of level matching, time synching, or bias controls. |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Top 100 Reasons For Despising Arnie | Audio Opinions | |||
About Arnie K | Audio Opinions | |||
rec.audio.Arnie.Krueger | Audio Opinions | |||
*Thank Heaven For Arnie Kroo* | Audio Opinions |