Given the results of the analysis, that will show only that a sufficiently long FFT will show perfection in the reproduction of sines.
Jn
So theres no way to measure this? I find that hard to believe. Use short bursts? Isnt a couple cycles enough to measure distortion?
Often you've been telling the "truth", meaning that it's your version of truth, a.k.a. opinion.I try to tell the truth and get a lot of trash in return.
The "evidence" occures when you use a faster sampling rate and it sounds more accurate compared to live.
Though it is not the kind of evidence you want to accept or use. Fine..
What you gathered from your pseudo objective comparison was the impression, which is fine for self indulgence but that's not objective enough to produce useful results, a.k.a. evidence.I already and in details described what and how to know and to what degree your repo system is accurate. It requires a "live" instrument in the room to compare. I am not going to repeat myself for each person. Accurate as opposed to just different or Better or Like. More realistic is also fine as the evidence re. sampling rate increase.
I already and in details described what and how to know and to what degree your repo system is accurate. It requires a "live" instrument in the room to compare. I am not going to repeat myself for each person. Accurate as opposed to just different or Better or Like.
THx-RNMarsh
And ive already debunked that theory and not going to repeat myself.
I did’t attack and you don’t discuss.Wonderful.
The sum of two sines is not transient because there are two sines.
Nor 3,4,5...if it were, all music would violate nyquist.
Your stance of attacking me rather than actually discussing, (should be) below you. Forums are full of people who switch to attacking the messenger when they are unable to support their premise with knowledge, this thread has a few. I just assumed you were different.
Jn
You are not asking but telling, almost dictating, look at the text in your posting.
At the same time you have this permanent feeling that nobody listens to you and calls you stupid ????
Would be better to stop mentioning this all the time.
I counted 25 mostly very long postings in the last 10 pages.
Did they bring you any further, I don’t think so.
If you want proper answers, come with detailed open minded question and you can expect decent answers or links to valuable pdf’s.
Just a friendly non attacking advise.
Hans
I think you are on his ignore list.And ive already debunked that theory and not going to repeat myself.

So theres no way to measure this? I find that hard to believe. Use short bursts? Isnt a couple cycles enough to measure distortion?
I do not believe the output would be very understandable. See my example of a 5 kHz modulation of a 20 kHz sine. There, we know exactly what the frequency content is, and we know that one sideband will be cut out.
Jn
Never said that, just making sure everyone realizes that in general simple math does not have any source of non-linear behavior. Except of course to Ed and the exponentials are never straight lines. 🙂
As usual.
When you don't follow something, you equate it to something else. As many folks have noticed capacitors passing audio signal do not work as well when then is measurable voltage across them. Do you understand why? (Obviously not.)
George, as usual also!
I did’t attack and you don’t discuss.
So hmmm, "enjoy your bubble". As in, disconnected from the rest of the world..
Yah, that's not an attack..
At the same time you have this permanent feeling that nobody listens to you and calls you stupid ????
You should either get a sense of humor, or perhaps learn what one is on this side of the pond. I can see it not translating very well across languages.
Wow, I had no idea I was being graded on word count.I counted 25 mostly very long postings in the last 10 pages.
Again, stop with the low road stuff.
I note with interest, you did not respond to my text that two or three or five mixed sines do not necessarily mean a transient signal. An organ chord would violate nyquist, even if held for 8 beats.
Jn
Ps.. And to be clear, a a steady state organ chord doe not violate nyquist, not even sittin on the keyboard ala Young Frankenstein.
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you did not respond to my text that two or three or five mixed sines do not necessarily mean a transient signal. An organ chord would violate nyquist, even if held for 8 beats.
Jn
That is because it isn’t a question but just text as you mention yourself. Further I have no idea why an organ chord would violate Nyquist or what you want to express with your transient signal, please explain.
Hans
Wow, I had no idea I was being graded on word count.
Tis odd, 4 times iirc people have posted objecting quite nastily to my post rate, why it should bother people that much is way beyond my ken, and I'm grateful for that.
Ah, then I should post everything as a question...That is because it isn’t a question but just text as you mention yourself. Further I have no idea why an organ chord would violate Nyquist or what you want to express with your transient signal, please explain.
Hans
You said multiples sines are a transient. I corrected that. And gave an organ chord as an example. Pretty clear timeline there.
Alas, if you haven't understood to date, why should I further attempt? You'll only gig me for word count again..diversion in lieu of discussion..
Jn
As usual.
When you don't follow something, you equate it to something else. As many folks have noticed capacitors passing audio signal do not work as well when then is measurable voltage across them. Do you understand why? (Obviously not.)
George, as usual also!
Wow, I took that as a joke, he even used that smiley face thingy..
Ed, did you do that thing with the press brake (IIRC)? And, btw, what is a press brake?
Jn
Ah, then I should post everything as a question...
You said multiples sines are a transient. I corrected that. And gave an organ chord as an example. Pretty clear timeline there.
Alas, if you haven't understood to date, why should I further attempt? You'll only gig me for word count again..diversion in lieu of discussion..
Jn
He meant a transient is multiple sines, isnt that fourier? And as you say a modulated 20k has side bands, what i sugest is a few full cycle burst of 20k statring and ending on zero. Could probably be done in spice, as well as hardware.
Is that what you call a discussion ?Ah, then I should post everything as a question...
You said multiples sines are a transient. I corrected that. And gave an organ chord as an example. Pretty clear timeline there.
Alas, if you haven't understood to date, why should I further attempt? You'll only gig me for word count again..diversion in lieu of discussion..
Jn
I sincerely have tried but I give up.
Hans
...When I hit a cymbal for example, how many cycles does it take to reach full amplitude, and what modulation envelope most defines the rising amplitude?
Of course, and ADC needs a brick wall and so does a DAC. Regarding DACs, say, for example, it depends. Let's say for 20-million tap linear phase filter. It may take a few or several seconds for from the time you press play until music starts coming out, but the frequencies have zero phase shift when the music does come out.
There are real DACs much like that, say, Chord DAVE with the optional prescaler CD transport. Believe it also has a real-time mode with less delay (and less sound quality) for more real-time-like operation when playing back sound with movies, etc.
Once music starts coming out it sounds great across the full frequency spectrum (based on reports of Chord DAVE from other people, and based on listening to HQ Player's very long filters first hand).
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Tis odd, 4 times iirc people have posted objecting quite nastily to my post rate, why it should bother people that much is way beyond my ken, and I'm grateful for that.
Ha,ha, when reading my posting it was not the post rate that bothers me at all, but to indicate that after 25 postings still not having answers could be a clear indication that the questions aren’t clear.
Hans
No, it is a response to your taking the low road. Discussion with you has had little value, you choose bubble, overly verbose, in lieu of.Is that what you call a discussion ?
I sincerely have tried but I give up.
Hans
I gave up on you about 30 posts ago. Look, I get it, you were apparently heavily involved in the inception of the CD at Philips , I admire that. But this discussion is not a tear down of that good work, it is a furtherance. So there is no reason for the attitude.
Jn
I understand that, it's his style, it's been that way for ages, it won't change. I just saw an opportunity to have a moan 😀Ha,ha, when reading my posting it was not the post rate that bothers me at all, but to indicate that after 25 postings still not having answers could be a clear indication that the questions aren’t clear.
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