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In Reply to: RE: Julian Hirsch acolyte posted by E-Stat on October 18, 2019 at 08:30:28
I do find it more useful than the Vogon-poetry listening impressions we usually get.
Follow Ups:
nt
all the best,
mrh
I learned it was an utterly useless metric when I was a teenager. Information that conveys no knowledge.
I learn far more from those who understand music and its subtleties. To each his own.
But I don't like to see a lot of high order harmonics, or worse, an-harmonic peaks. I don't see why THD+N should be above -80 dB or so. Also, I don't like to see a lot of mains noise, shows bad design and workmanship IMO.
And, yes, speakers have a lot more distortion, but I don't see that as a reason to accept a lot of noise and distortion from our electronics. I think some people just want to justify a pure oenophile-like approach to audio where there sense impressions won't be contradicted by some propeller-beanie with a voltmeter.
But I don't like to see a lot of high order harmonics, or worse, an-harmonic peaks. I don't see why THD+N should be above -80 dB or so. Also, I don't like to see a lot of mains noise, shows bad design and workmanship IMO.
On what basis?
A pure numbers man would note that the noise floor of a typical listening room is far above the level of noise, distortion, and other artifacts produced by any digital source with a reconstruction filter, even the poorest measuring ones. By the numbers, the only digital sources that should have audible problems are filterless NOS, which are intentionally designed to pollute the audio band with images and noise.
Despite that, most of us perceive differences in sound quality from different digital sources. Some audiophiles insist they are huge. Personally, I find them small, but often meaningful. I've never found an objective metric that could help me pick a digital source.
Speakers are at the other end of the spectrum. I find a very strong correlation between what I see in a full suite of measurements and what I hear. If Amir wants to contribute to audio science, he should start there. But he seems to prefer measuring DACs, perhaps because they are the easiest things to measure.
so, for a long time, audio designers did -- many (not all!) of them succeeded in producing marginally stable, bad sounding amplifiers that measured great (at least with respect to THD and also, sometimes,in terms of bandwidth).
You know what HH Scott's Daniel von Recklinghausen said, I reckon. :)
If not, see link below.
all the best,
mrh
...and we all know what happens to those poor souls that suck up to Vogon poets.
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