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Working through OCA videos to create DSP filters

LIΟN

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I thought I attached to to the first post, but I guess I need a zip file, let me try again. Hopefully it's attached here.
Thanks! I'll take a look with a grateful heart..
Btw, Is the polarity of your LSR310s inverted? It depends on the location of the subwoofer, but I think it's a good idea to compare it by clicking the inver button on the back.
 
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Mikey Antonakakis

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Thanks! I'll take a look with a grateful heart..
Btw, Is the polarity of your LSR310s inverted? It depends on the location of the subwoofer, but I think it's a good idea to compare it by clicking the inver button on the back.
It's on the 180deg setting at the moment.
 

OCA

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My filter with the 98Hz correction pre-rings a little on Billie Jean. The one you shared adds a couple extra notes between each kick drum lol
It's possible to eliminate the pre-echo completely by chopping of the left windowing of that filter but the effect will also change.
 

LIΟN

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It's on the 180deg setting at the moment.
Are you using your own crossover 80hz by connecting speakers to 310s?
Can I see the measurement by pressing the 180 degree button again? Of course, it depends on the position of the subwoofer, but I think the answer would be good if the polarity was reversed.
 
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Mikey Antonakakis

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Are you using your own crossover 80hz by connecting speakers to 310s?
Can I see the measurement by pressing the 180 degree button again? Of course, it depends on the position of the subwoofer, but I think the answer would be good if the polarity was reversed.
I am using DAC->310s->306p (using sub's built-in 80Hz crossover). I will try to take measurements with 0deg polarity setting (measurement file I shared is with 180deg setting).
 

OCA

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It's possible to eliminate the pre-echo completely by chopping of the left windowing of that filter but the effect will also change.
When window length is dropped down to 30-35ms, all audible pre-echo is removed:

Echo.gif


But it turns into a compromise between frequency response and phase response depending on the optimization strength. Still, phase will often end up much better than the original with an almost flat FR.

1697819607977.png
 
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