Did Amir Change Your Mind About Anything?

Title: "Tone burst response of amplifiers to determine some properties of their dynamic behaviour"

Tone sine waves are used by all designers.. they are part of the design process.. . The ultimate test is by musical real music...

Please explain to me why it is OK for him to run such tests when you claim any such test is based on "fourier theory" and therefore invalid.  I remind you that this is your expert witness.

Are you serious? Fourier Theory is the BASIS of circuit design... I never said that it must be put in the trash bin... 😊

but as a basis to hearing theory Fourier analysis alone dont work... THIS IS MY POINT  and Magnasco and Oppenheim point... Van Maanen know that and use the time dependant way the ears works to imagine his specific parts design... I use Van Maanen here as a PROOF for you that Fourier based theory essential for linear predictive beahaviour of components must be used also with an hearing theory which is not Fourier based...The first article i cited of Van Maanen is about :"Often disregarded Conditions for the correct Application of Fourier Theory" did this title suggest to throw out Fourier theory in the trasbin ?

You know how to read i imagine..

As a hearing theory Fourier theory is unsufficient to describe the real hearing workings.. Thats my point suggesting an ecological theory of hearings qwith not only Magnasco and Oppenheim but many other researcher in acoustic....

@mahgister 

I make appeal to this ecological theory because you criticized all audiophiles TOGETHER in a single block as being ALL wrong because they supposed that "musicality" exist in some design when they listened to it even if the design do not correspond with your limited set of linear measures 

I don't criticize people.  I measure audio equipment and if I see problems in it, I report.  If you are going to dispute that, then you need to come forward with either your own measurements to the contrary or controlled listening tests.  Take this page of your favorite designer's product:

It says "distortion minimized for human hearing."  Where is the proof of that?  A manufacturer can just say it and it becomes true? 

It has a bunch of simple numbers in there.  What are the conditions under which they were measured?  It produces 75 watts at what distortion?  What is the level of noise?  Here is how I show power:

You see how informative that is compared to his one number?

What you see there is pure marketing fluff.  It is not remotely useful to make a purchase decision.  Not on objective or subjective basis.

@mahgister 

Tone sine waves are used by all designers.. they are part of the design process.. . The ultimate test is by musical real music...

Nope.  Again, he said that the tone burst clearly shows the audible difference:

"To that end, two high-quality amplifiers with clear differences in their perceived sound, have been tested with tone-bursts. In this report, only the results at 30 Hz will be reported and discussed, as at these low frequencies the issues show more clearly."

I like to know why he can test two amplifiers with test tones and declare audible superiority of one over the other just as he is doing.  Please answer that.

@mahgister 

Thats my point suggesting an ecological theory of hearings qwith not only Magnasco and Oppenheim but many other researcher in acoustic....

I don't care about many others not cited or any ecological "theory."  We care about reality of how to determine audible performance of an amplifier to make purchase decisions.  Your own expert witness is using test tones to do that.  In both papers,.  Yet you say we shouldn't.  

I apologize Amir but i dont understand, precise your question..

Thanks

@mahgister 

In a word we must train and trust our ears... Measuring is not enough...

Do you agree if such a test doesn't exist, or that it used more than the ears, the claims are invalid?