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General audio topics that don't fit into specific categories.

You say: Granted for general Fourier analysis....

And general fourier analysis applies 100% to audio signals.

And what we use in order to understand what happens on capture and playback is fourier analysis.

Ergo, a sinc in frequency is exactly, perfectly germane for audio analysis, just like it is anywhere else in fourier analysis.

WHY do you keep insisting otherwise? WHY?

It is used in the analysis of digital audio repeatedly, and all the time.

You claim that one can't make a time-limited signal in Fourier analysis. The sinc function (in frequency) provides you exactly with the analysis of a time limited function, and one that can be constructed from a continuous set of infinitely long sine waves.

You keep asking deliberately malicious questions like "do you know what a sinc function really is". You claimed, insistantly, that it didn't apply to the example I gave, when of course it is exactly and precisely applicable.

I think you will find that there is far, far more to Fourier analysis than you expect.

One of the obvious, abundantly clear aspects is that you CAN make a time-limited function (periodic, aperiodic, whatever, any finite-valued function with no 0th order discontinuities, and no real signal can have 0th order discontinuities) from the integral of a set of infinitely long sines.

This is something you need to learn.

And you POSITIVELY need to learn not to tell people they don't know what they are doing when they are explaining things to you. It's not going to go over well in your career.


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