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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: ? posted by Ted Smith on June 15, 2006 at 11:27:14:
I am referring to relative levels of signal to noise ratio and not absolute limits of hearing.I am aware that for example the SNR of LP is in the 60db range but the question is can one hear sounds softer than what should be allowed by the SNR because the signal is correlated and not random noise? I take your hearing aid example to be a demonstration of something similar, is this correct?
My point is that let's say you have an amp with a noise floor 90db below max output (ie. -90db). The lower order harmonics are likely above this level for a 1 Khz signal at 0db. Now the question is are there harmonic distortion components under the "noise" floor? According to Boyk and Sussmans theoretical calculations there will be. If this is so then are they potentially audible? JJ suggested that there is about 120db range for human potential detection meaning if the harmonics are at the noise floor or just below (say -100 db) then as they are correlated it is possible for them to be picked out of the "noise" and contributing to the character of the amp.
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Follow Ups
- Re: ? - morricab 13:30:15 06/15/06 (1)
- Re: ? - Ted Smith 14:00:12 06/15/06 (0)
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