Search found 4 matches

by timi
Mon Nov 04, 2019 7:48 pm
Forum: Adding Features to Audacity
Topic: Equalization Filter Length
Replies: 4
Views: 820

Re: Equalization Filter Length

Here are the changes I made to the source code. I made the previous max filter length my minimum so it's easy to pull the slider to the minimum for comparison. The max filter length is now 4194303. My empirical tests showed that the window size on line 148 of the Equalization.h should be twice the s...
by timi
Mon Nov 04, 2019 5:54 pm
Forum: Adding Features to Audacity
Topic: Equalization Filter Length
Replies: 4
Views: 820

Re: Equalization Filter Length

There is a notable difference with a longer filter. The longest I could come up with is 4194303. Here's the difference. This is an UH-1H Huey Helicopter in cockpit sound completely generated in Audacity out of Brownian noise and then equalised to sound like a Huey. Filter length: 4194303 https://www...
by timi
Tue Sep 10, 2019 8:38 am
Forum: Adding Features to Audacity
Topic: Equalization Filter Length
Replies: 4
Views: 820

Re: Equalization Filter Length

Never mind, I made a custom build with a maximum length of filter at 131071.
A far more accurate low frequency response with the new setting.
Filter131071.jpg
Filter131071.jpg (1.16 MiB) Viewed 582 times
by timi
Mon Aug 19, 2019 7:23 pm
Forum: Adding Features to Audacity
Topic: Equalization Filter Length
Replies: 4
Views: 820

Equalization Filter Length

I'm using 32767 band equalization presets to recreate all kinds of aircraft noise out of generated Brownian noise for flight simulation. And often the maximum filter length of 8191 is good enough. But often times it's also not quite cutting it as you can see. Therefore I'd like to suggest that the f...