How importend is impulseresponse of a speaker for the stereowide?

[Tim Link]

Magnitude is the same in my measurements. It did not change. Nada. Zero.

View attachment 107586

Actually, there is a small difference visible only if you apply FDW.

View attachment 107587

It looks a tiny bit louder at 100Hz and 2KHz. 1 or 2 db.

 

[ernestcarl]

It looks a tiny bit louder at 100Hz and 2KHz. 1 or 2 db.

Indeed. It can only be seen with frequency dependent windowing -- the lower the number applied, the greater the effect.

 

[valerianf]

Atohm speakers is inserting a null filter between the crossover and the tweeter.
That way the tweeter and the midrange drivers have the same phase.
Does somebody have a 3 ways Atohm speaker?
It would be interesting to have a listening feedback.

 

[Tim Link]

Indeed. It can only be seen with frequency dependent windowing -- the lower the number applied, the greater the effect.

View attachment 107618

I'll have to admit I don't understand frequency dependent windowing.

 

[dasdoing]

I'll have to admit I don't understand frequency dependent windowing.

the idea is to filter out the room reflections. since the soundwaves are getting bigger and bigger with falling frquencies you need the window to become bigger, too

 

[Tim Link]

the idea is to filter out the room reflections. since the soundwaves are getting bigger and bigger with falling frquencies you need the window to become bigger, too

Thank you!

 

[ernestcarl]

the idea is to filter out the room reflections. since the soundwaves are getting bigger and bigger with falling frquencies you need the window to become bigger, too

I’ve read all about FDW from multiple sources, and yet I still feel like I don’t completely get it. It’s true. There are some things I sort of get the gist of (sometimes that’s already enough), but do I really get it on a fundamental level? Probably not...

 

[dasdoing]

I’ve read all about FDW from multiple sources, and yet I still feel like I don’t completely get it. It’s true. There are some things I sort of get the gist of (sometimes that’s already enough), but do I really get it on a fundamental level? Probably not...

look at the wavelenght of a pure impulse

octave band filtered - center at 63Hz

1000Hz

a fdw of 5 will set the right window to 5ms at 1000Hz, 0,5 at 10000, 50 at 100, and so on