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SoNic67 t1_j5tfgwh wrote

Reply to comment by No-Tune-9435 in what information an impulse response graph provides about headphones? by MEGA_AEOIU792

I have argued with people about that. They think that theoretical considerations about Fourier transformations are all they need to understand.

They lack the understanding that real systems are not of infinite bandwidth. Especially headphones.

So that response is more important than they think, and it cannot be derived by just looking at 20Hz-30kHz response.

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blutfink t1_j5v8018 wrote

> real systems are not of infinite bandwidth

I don’t see anyone making that assumption here. Could you elaborate?

> that response […] cannot be derived by just looking at [frequency] response.

Of course not from the magnitude response as it is typically plotted. But from the complex-valued frequency response, of course it can, no assumption of infinite bandwidth required.

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SoNic67 t1_j5vo2ux wrote

>I don’t see anyone making that assumption here. Could you elaborate?

Every single person that has a fetish about FFT math and assumes it applies in real world 100%.

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blutfink t1_j5vp0v8 wrote

Well, I’m allowed to have that fetish. Digital signal processing was literally my job for decades. Let me tell you that the math and the methods very much apply to the real world. That’s how they were conceived; to analyze the filter properties of physical systems.

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Rasyad95 t1_j611nft wrote

Your comment makes me assume that you do not understand the use cases of FT. Do you?

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