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In Reply to: Re: And still, John C, the question remains unanswered.... posted by john curl on November 19, 2002 at 10:50:01:
""You misunderstand the nature of higher order non-linearity to its effect on listening fatigue.""No, I do not misunderstand that. You misunderstood the question.
So, here it is again: Is it possible 110 dB below 50 mV is below the threshold of human hearing.
I did not ask about 7th harmonic, or the nature of higher order non-linearity and it's effect on listening fatigue. Perhaps it is another thread you are confusing this with?
Follow Ups:
The testing with a single tone is LESS SENSITIVE. It gives a lower percentage result, than the equivalent multi-toned IM test waveform like the one that Jon Risch uses. However, music IS multi-toned. Unfortunately, my thd meter that does a 90+dB pre-null of the single test tone, cannot null other tones at the same time. If someone will fund me, I will build a multi-toned pre-null box to null a series of spaced tones in front of my HP-3563. Then I can get even larger levels of distortion residuals. However, I am happy enough with differences between connecting wires at the moment.
Now for the rest of you out there. It is true that these levels are low, BUT they are consistent, and change with each type of wire tested. This is real, not guesswork. I am sure that they correlate to subjective listening response to some degree at least, because the 'lousy' wires usually measure much worse than the hi end wires that I have tested.
""Now for the rest of you out there. It is true that these levels are low, BUT they are consistent, and change with each type of wire tested. This is real, not guesswork. I am sure that they correlate to subjective listening response to some degree at least, because the 'lousy' wires usually measure much worse than the hi end wires that I have tested.""There, that wan't hard now, was it??
You have no hard data to back it up your assumption that signals that low are audible, but you express an opinion. That's fine.
And I have no issues with your ability to test signals that low in the "mud", re:real vs guesswork.
No, I just have my ears.
""No, I just have my ears.""And given your experience and status, I would listen to any opinion you would give concerning what you hear.
Technical issues... That's the easy stuff.
nt
My stomach is killin me.Steve, thanks for sittin back and watching.
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