How about maintaining some honesty and let results be results regardless the person making the measurement? Yes, methodologies should be thoroughly checked.
We call that good peer review.
And that may well be true. But I took a risk in the beginning and I might as well take another one.
So with a 'little help from my friends' let us try to see if we have the tools. If that -1dB @ 20KHz 'corner' can be captured in a measurement, then it is a slam dunk. It cannot be argued against as it would be so a specific outcome that any doubt would be erased.
Once again, I put myself up for failure - but at least let no-one question my courage... he says as they slid the noose around his neck. 😀
Good lord, Scott only mentioned -1dB when he questioned your assertion. You are very gifted at twisting other's words to your purpose.
I would love that and welcome it with open arms. However given that SY was only yesterday accused of bias...
What effect? If then other possible manifestations of this "effect" are eliminated by equally carefully done tests, maybe. As I said earlier folks are throwing in the no I to V approach which had been around a while. IMO it deserves the same chance as any filtering at the DAC technique.
Joe Rasmussen;4468126 If that [B said:
erm. Nope. Seen that, according to you a -1dB 20KHz corner either in the digital domain or outside the DAC does not produce the 'magic' merely measuring that proves nothing. Given DS DACS produce large amounts of ultrasonic noise and its very possible what you are doing is reducing that a wideband measurement is required. How wide I personally lack the knowledge to say, but many on here do know that.
No, no. The die is cast -1dB at 20k vs flat to 20k, -1db at 30k no difference no "effect". After all it's obvious and surprising.
I'm only trying to get a handle on what is claimed, AFAIK the -1dB at 20k is part of the magic so I suggested move the 3R3 resistors to 1R8 and repeat a fair blind listening test. I'm only taking the OP's words as stated.
As a side issue, I surmise the "hook" here is doing the wrong thing by rolling off the response closer to 20k than necessary so make it a little higher and the mojo is lost or not ?
No peeking.
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Exactly what is it that you want to capture? Where did this "corner" idea come from? (Hint: not from Scott W). What would, in your mind, constitute a "slam dunk"? What, in short, are you talking about?
I'm sure that is not accidental. In fact, there are no goalposts, they are an illusion! "This is not the effect you are looking for."
Maybe? I'll stick with demonstrating the noise gain effects from the transimpedance stage. That's a safer bet, and something useful to learn (or relearn--goodness, it's been a while).
The subjective effect on SDM DAC sound character, which has been described and fought over for three distinct threads now.
No problem, I'm not sure Joe understands this issue, yes, the circuit he posted is -1dB at 20K you could not measure anything else, so what. Repeat with one that is -1dB at 30k and observe the evaporation of the magic (or not). 😉
This effect has baggage, unless it's compared on equal footing with any number of previous suggestions that span 30yr. of folks observing the same things I don't see the point of singling it out.
Joe, can you confirm what I surmised from your Posts #1 thru #6 that the -1dB @ 20kHz can be Eq'd out downstream somewhere and the desired effect is retained?
I wasn’t questioning your subjective evaluation. I was merely using your report to question the Coris comment that the sound quality isn’t different just the soundstage, because you evidently felt there was a significant difference in the sound quality.
Stereophonic sound reproduction itself is an illusion. I suspect that you instead meant something more like, goalposts are absent. However, a tangible frame of reference has been made available from the start, one which most here appear steadfastly unwilling to examine for themselves. Which is the simple low cost experiments of post #1. Perhaps, energies would be more productively spent on conducting one of the experiments,in question, rather than be wasted in unproductive frustration.
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