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Not that I don’t want great measuring gear because I do.
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God of SINAD vs. reality we get from most available music files
- Thread starter pma
- Start date
So, how can you possibly assign a SINAD to an original work. It is by definition "the work". Perhaps you mean dynamic range, or something of that sort?
restorer-john
Grand Contributor
Neurological signal difference between the umami of the burger and the acid & sweet signals of the sauce and tomatoes/pickles...
In-N-Out = 140dB SINAD
- CALIFORNIA TRANSPARENCY IN SUPPLY CHAIN
- Vertically integrated
"From the early days, Harry and Esther were keen to keep as many aspects of the business in-house as they could. They butchered their own meat, started a wholesaling firm to stock up on paper supplies and used their own construction crew to build new stores. "
"It cuts out an estimated 6% to 10% of total costs by owning most of its properties—many bought years ago—and not paying rent."
"the long-standing In-N-Out rule that all new restaurants fall within a day’s drive from the nearest warehouse, so meat and other ingredients stay fresh."
(nothing is ever frozen, only transported via refrigerated truck)
- The Freshest, Friendliest Fast Food
"In-N-Out sources all of its own beef, individually inspecting every chuck that it receives. In-N-Out employs in-house butchers to break down and grind its meat, and forms patties in-house, maintaining absolute control over the patty-making process."
"In-N-Out stores don’t even feature freezers, microwaves or heat lamps"
"In-N-Out is able to attract, and retain, talent by paying much higher wages than competitors, and providing better benefits. In-N-Out associates have always made at least $2-3 above minimum wage, and in 2012 store managers made more than $120,000 on average, compared to a median food service manager salary of $48,000 per year."
Seems harsh. I agree with @j_j though suppose you could derive SNR from looking at the noise in the silence between notes, or takes. But why...
Besides, hamburger is a mixed-up mess with unknown condiments. Next you'll be asking the SINAD of hot dogs (shudder). Maybe a steak... I'll volunteer to test that one.
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I think I already mentioned earlier in the thread looking at lead ins/outs that don't appear faded, 70 db is about the best recording dynamic range I can come up with. That is a total measure though. One in the 3-5 khz range is 10-12 db lower.Seems harsh. I agree with @j_j though suppose you could derive SNR from looking at the noise in the silence between notes, or takes. But why...
Besides, hamburger is a mixed-up mess with unknown condiments. Next you'll be asking the SINAD of hot dogs (shudder). Maybe a steak... I'll volunteer to test that one.
- Thread Starter
- #268
I tend to agree. The special file I posted here
Does a 4 million taps FIR filter sound better than a 16K one? Let's find out.
21kHz signal at 2.46v, right? A proper filter will cut off any images. A poor one will not. An amplifier can't produce IMD from a non-existent energy at the input. I agree with all that, just saying that PMA is talking about 2.1k, not 21k, and I don't know how he get's this figure.
www.audiosciencereview.com
is about that. But it is not a "normal" music recording.
Really, really did not want to go there...
'They'?
You know, the "they" and "them" in any conspiracy theory, right?
Well, then. You have a good point. Let's start from the noise floor of the atmosphere, which is in the neighborhood of 6 to 8 dB SPL flat weighted 20-20k.
You can't get rid of that, unless you get rid of the atmosphere, and there are both physics and biological difficulties in that route.
If you have an average loudness orchestra, even in the quietest, no-audience venue in existence, maybe you get 84dB or so of dynamic range. Of course, we are not taking into account the human sensitivity to the noise floor (many years ago, with a well-known mastering guy, I did a perceptual SNR measurement in ERB's, but it never got submitted for publication thanks to a failing AT&T).
But sound is an interesting beast. At 120dB, sound transmission is nonlinear enough to measure distortions over the natural noise floor. at 140dB, any presumption of linearity (along with any inner hair cells in your cochlea
) goes POOF out the door. Of course, this is frequency sensitive. If you need some evidence to that, air pressure at sea level is approximately 101kpa, and at 10,000 feet is approximately 70kpa. That's a signal of 101-70= 31kpa.
SPL reference is 0.0002 pa (note, not kpa). So 31000 (pa)/.00o02 (pa) = 1550000000 amplitude ratio. That's 183dB SPL, which is beyond earsplitting. Of course, that's not a problem because the spectrum is in microHz or so.
So, there are a variety of issues to be considered, but air is a limited medium, as is an atmosphere
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