If you have a problem or need to report a bug please email : support@dsprobotics.com
There are 3 sections to this support area:
DOWNLOADS: access to product manuals, support files and drivers
HELP & INFORMATION: tutorials and example files for learning or finding pre-made modules for your projects
USER FORUMS: meet with other users and exchange ideas, you can also get help and assistance here
NEW REGISTRATIONS - please contact us if you wish to register on the forum
Users are reminded of the forum rules they sign up to which prohibits any activity that violates any laws including posting material covered by copyright
MV ZDF BP1 best for spectrum analyzers (filtered)
1 post
• Page 1 of 1
MV ZDF BP1 best for spectrum analyzers (filtered)
by wlangfor@uoguelph.ca » Thu Jan 30, 2020 3:58 pm
Hi all, I was working with various forms of spectrum analyzers which have bands with the old school bar graph style. Anyways, I at one time had never worked with fft and tried to make one. It went horribly wrong, but, lately I tried to re-hash the idea.
After some practicing it's not so hard and I was able to get a really good response from it. I'd tried many other filter types and the only reliable and low cpu cost was the zdf bp1.
So, thanks again to Martin for those great filters. He'd also posted about an interesting Goertzel semitone analyzer. I'm confident that I can optimize them in a multi band analyzer (up to 34 bands) that should be 0.35% CPU. In contrast 18 bands with the ZDF uses 0.42% CPU.
Changing the topic, I've also been working on a version that grabs data from the graph prim and fft magnitude. It so far seems to be the most predictable, and I came up with a method that mimics resonance.
But the real trick for all of these methods you all may wish to try is to one use slides and set the step to 1. Furthermore, make a really efficient compressor, and set the attack and release fairly low. Once you have the results from the analyzer will be very predictable.
GL analyzing
After some practicing it's not so hard and I was able to get a really good response from it. I'd tried many other filter types and the only reliable and low cpu cost was the zdf bp1.
So, thanks again to Martin for those great filters. He'd also posted about an interesting Goertzel semitone analyzer. I'm confident that I can optimize them in a multi band analyzer (up to 34 bands) that should be 0.35% CPU. In contrast 18 bands with the ZDF uses 0.42% CPU.
Changing the topic, I've also been working on a version that grabs data from the graph prim and fft magnitude. It so far seems to be the most predictable, and I came up with a method that mimics resonance.
But the real trick for all of these methods you all may wish to try is to one use slides and set the step to 1. Furthermore, make a really efficient compressor, and set the attack and release fairly low. Once you have the results from the analyzer will be very predictable.
GL analyzing
-
wlangfor@uoguelph.ca - Posts: 912
- Joined: Tue Apr 03, 2018 5:50 pm
- Location: North Bay, Ontario, Canada
1 post
• Page 1 of 1
Who is online
Users browsing this forum: No registered users and 59 guests