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In Reply to: Did I say that? - or are you just struggling to be rational? posted by shane. on September 14, 2017 at 21:40:46:
I don't understand why you guys are talking about THD.
THD tells us almost nothing.
It has been known for a long time that low ordered harmonic distortion is not heard by humans as distortion anywhere near as much as upper ordered harmonic distortion for a variety of reasons.
"2nd harmonic, by itself, is nearly inaudible, since it is a full octave higher than the original musical spectra, and is musically consonant. Similarly, the 4th harmonic is two octaves higher, and is also musically consonant. But 3rd, 5th, 6th, 7th, and 9th are very dissonant and ugly sounding, and are easily heard, especially with increasing order. In the 1950's, both Norm Crowhurst and D.E.L. Shorter (of the BBC) proposed weighting harmonics by the square or cube root of the order to better reflect their audibility. Small amounts of high-order harmonics - even when 60 to 100 dB down - are musically significant."
It's too bad that the industry didn't listen to Norm Crowhurst and D.E.L. Shorter way back then. We would be much better off if it had.
So yes, an amplifier with higher THD can have less audible distortion than an amplifier with lower THD and for reasons beyond what is quoted above.
Tre'
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Follow Ups
- RE: Did I say that? - or are you just struggling to be rational? - Tre' 22:53:21 09/14/17 (6)
- One more thing about it - sser2 12:55:35 09/15/17 (2)
- Feedback turns positive? - gusser 18:11:19 09/17/17 (0)
- +1 (nt) - Tre' 18:22:01 09/15/17 (0)
- RE: Did I say that? - or are you just struggling to be rational? - shane. 22:57:43 09/14/17 (2)
- "THD is simply the reverse of DHT" - sser2 22:01:40 09/15/17 (1)
- RE: "THD is simply the reverse of DHT" - shane. 19:24:06 09/16/17 (0)
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