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General Asylum General audio topics that don't fit into specific categories. |
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In Reply to: RE: Do you prefer the "background silence" of SS/Digital, or the that of Tubes/Analog? posted by RGA on April 21, 2012 at 18:07:08:
"I know this was a complaint with some of the Dolby noise suppression options where it reduced the noise but people felt that it also took away some of the music so they preferred to record without noise reduction at all."
Dolby in its various forms is a psycho-acoustic fix at best when the encoder and decoder are both in proper calibration. It messes up transient response. (This is certainly true for consumer Dolby B and C, where I have done A - B comparisons on a live recording of piano.) To a certain extent, I believe that the same can be said of the professional Dolby A, i.e. I have always believed that the advent of Dolby noise reduction served to end the classic era of purist stereo recordings. It was, however, not nearly so disastrous as early digital recording.
In doing live vs. recorded piano testing, I obtained the best results with a reel to reel recorder with no noise reduction. My Nak CR-7 lacked sufficient signal to noise to capture piano dynamics undistorted unless recording at a very low level, in which case there was sufficient hiss as to interfere with the music. With Dolby turned on the hiss was gone, but the musical dynamics were destroyed. When I did these tests the CR-7 was brand new and in proper calibration. The solution to tape noise is simple but expensive: move lots of tape under the heads. With digital the situation is analogous: use lots of bits, rather than try to skimp using psycho-acoustic tricks.
Tony Lauck
"Diversity is the law of nature; no two entities in this universe are uniform." - P.R. Sarkar
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Follow Ups
- Dolby sucks - Tony Lauck 09:20:52 04/22/12 (1)
- u r correct ... - TBone 10:36:59 04/22/12 (0)
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