First of.
Input filter needed to reject unwanted noise from the input.
Second of.
Huge bandwidth and feedback depth are needed for correct any distortion provided by the amplifier itself or it's gain or output stages.
This is two different tasks with two different methods to resolve. Do not mix them in one statement.
as for the terminology of distortion, hopefully help with this. Pay attention to the conclusions to formulas 6.5
After having a glance at your last link I understand that you use a terminology different to the one most of the members here are used to. It is nearly impossible to debate technical aspects without a common language.
Useless info: Jiri Dostal's book was the very first tech book I bought. I should dig it out.
Does anyone know when the 1st Ed. came out? Was it 1974 or so? I see that BH reprinted it in 1993.
It's a good book, but not the last word.
Jan
Does anyone know when the 1st Ed. came out? Was it 1974 or so? I see that BH reprinted it in 1993.
It's a good book, but not the last word.
Jan
To conclude: Never go to a concert when you cannot get a seat directly in front of the podium.
Because else you will be confronted with a huge GD and a diminished level, all adding up to an enormous error vector and vector distortion, let alone the reverberation that also adds up.
Nobody wants that, true ?
Hans
Because else you will be confronted with a huge GD and a diminished level, all adding up to an enormous error vector and vector distortion, let alone the reverberation that also adds up.
Nobody wants that, true ?
Hans
Hans, don't try to be like Duning-Kruger sitting in the gorge. This diarrhea of words about anything does not paint you, as well as many other wise men who think of themselves as gurus.
Hi Petr
According to the dictionary:
a Guru is an influential teacher or popular expert.
So far you have behaved like a guru in the true sense but haven’t succeeded in finding any followers until now, although we have tried.
We tried to convince you to be more careful in using definitions, using non existing relationships as a prove and telling complete nonsense such as 5Mhz BW amps, etc, etc.
The fact that we are contributing in the first place is to communicate and to help each other to make some progress.
The point however is that you evade every technical discussion an go on with producing graphical “diarrhea” that is proving nothing at all.
So why are you posting, if you want to prove something, come with a solid theory or some other solid results, not hear say information of golden ears, go in discussion and we are all ears.
Hans
According to the dictionary:
a Guru is an influential teacher or popular expert.
So far you have behaved like a guru in the true sense but haven’t succeeded in finding any followers until now, although we have tried.
We tried to convince you to be more careful in using definitions, using non existing relationships as a prove and telling complete nonsense such as 5Mhz BW amps, etc, etc.
The fact that we are contributing in the first place is to communicate and to help each other to make some progress.
The point however is that you evade every technical discussion an go on with producing graphical “diarrhea” that is proving nothing at all.
So why are you posting, if you want to prove something, come with a solid theory or some other solid results, not hear say information of golden ears, go in discussion and we are all ears.
Hans
Funniest statement of the week from someone who spouts the rubbish you do.
Hans: I admire you patience with this lost cause.
beginners are offended that not all tests are clear. Here's a quick introduction to understanding signals and how they are generated.
I really hope that it will be so
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Who are you calling beginners? Jan Didden, Hans Polak, Syn08 and Stinius?
Petrov, your choice of words is arrogant, offensive and некультурный. Don't be a Dunning-Kruger sitting in the gorge. 🙄
as a continuation, I suggest that you familiarize yourself with the following material. As for complaints about my statements, first of all look at your statements from the outside, remember how many insults and humiliations were addressed to Graham - the author of the FCD, who essentially tried to convey the same meaning of distortion
rather than stop floodists like you. I would be better off summarizing the results of my competition ... It would be more confusing. Although what's the point in letting him down if you don't understand what the point is
the signal attack does not consist of a single sinusoid with increasing amplitude. It also contains many harmonics, each of which (like the first period about which Graham spoke) is important to convey in its original form. And for this it is important that the amplifier has good speed characteristics, the smaller the group delay and the longer the horizontal section, the better. An increase in the group delay even at a frequency of 1 MHz and above has a negative effect on transient distortions, since it inevitably affects speed distortions.
You did not comment post#153 https://www.diyaudio.com/forums/sol...s-amp-design-thread-split-16.html#post6527631 where I showed an amp with no LF filter and group delay of 8.7 nsec and the same amp with LP filter of 850 kHz cutoff and now with group delay of 190 nsec.
So you say that only adding input LP filter will spoil the amp completely??