#3 - Understanding Finite Impulse Response (FIR) Filters

Dave Gunness describes how applying IIR and FIR digital filters to signals going to the loudspeaker produces purified signal response.

[vizmohanan]

I was taught to memorize these filters and math operations and was never explained the reasons or intuitions behind it. This video is a gem.

[skilomodelista]

I studied for 2 hours before, but in this 12 min video really figured out how a FIR filter works, "without maths". Thanks, nice job.

[roodsound]

What an excellent educational resource Dave. Nice job!

[thomasa.]

Watched it three times. And now I start to actually understand.
Thank you so much.

[brucedawson]

I really respect the dedication to the messy desk

[icandreamstream]

This was an incredible explanation. Thanks for taking the effort and time to do this video.

[bjjsdvbnsj]

Thank you for making this I now think I understand FIR filters so much better so understandable

[AJ-fohp]

Really nice explanation.I was searching practical example of FIR filter, now I got this,
without practical impressive example, mathematical model become dry thing, hard to visualise.Thanks lot Dave Gunness

[rforge]

great job on explaining the topic at hand!

[entertainmentrtn]

This is the right way of explaining… thank you sir

[JustSkillGG]

Wow! I never expected from Morgan Freeman to teach me filters

[ZenoDiac]

An amazing explanation. Very well done. Have my like

[stoner]

thank you Dave. I have a question that i suspect you might not have time for. the bo.Xo, 3rd coefficient by the input sample, how it that physically added for the mathematical element, is that fitting ?

[ytubeleo]

Great video. Please make more! I see this says "#3". Was there a #1 and #2 or even #4, #5, etc.?

[MickeyMishra]

So in laymen terms, in anTradatinaol electronic crossover, *( like MiniDSP, - or - -Pioneer network Mode)*
You would use for setting your crossover points for your speaker drivers, *(Tweeter, Woofer)*
You are able to set the crossover slopes *(2500-Khz @24dB)*
So the Filter that is being applied to the signal *(the 2500-Khz crossover point)*
would more accurately represent an analog filter or crossover *(The Box that comes with most speakers for a car)*
But is also able to do things that an analog crossover does not typically do such as phase of the singal to the speakers and response in your listening area from your speakers?

I think I'm at least 25% correct.

[ajaygunalan]

Wow, you should be my Professor. Thanks a Lot.!

[Audio_Simon]

Superb thank you! However is it not unfair to say an IIR filter cannot temporarily correct a speaker resonance? Speaker resonance is mechanical so an opposite mechanical model should cancel the decay too, right?

[kevinhay]

Fantastic, thousand thank you's.

[pmkconsultant]

Great stuff! Thanks for the explaination!

[djtecthreat]

Can I somehow convert PEQ values (Freq, Bandwidth, Gain) to FIR? (he asks ignorantly).