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
Fast blue memin read with interpolation
2 posts
• Page 1 of 1
Fast blue memin read with interpolation
(héhé this post has been deleted but with all the spam that was surrounding it i understand why !)
Here's a fast blue array memin reader.
It take the memin and write it in a normal mem in a modified way.
Every SSE will be write like this : sample0,sample-1,sample-2,sample-3
So we could only read one time to get an interpolated result. (Here it's only a linear interpolation)
It's not bandlimited, but if you provide sin like array with frequency below nyquist the aliasing is low.
(I see it more like a table lookup.)
In white i provided an example but it's very bad and glitchy..
Fast attack will read an unloaded array..
Each time a new note is done, it might or not reload the array..
> That's where it seams impossible to manage even is we fix the fast attack...
Here's a fast blue array memin reader.
It take the memin and write it in a normal mem in a modified way.
Every SSE will be write like this : sample0,sample-1,sample-2,sample-3
So we could only read one time to get an interpolated result. (Here it's only a linear interpolation)
It's not bandlimited, but if you provide sin like array with frequency below nyquist the aliasing is low.
(I see it more like a table lookup.)
In white i provided an example but it's very bad and glitchy..
Fast attack will read an unloaded array..
Each time a new note is done, it might or not reload the array..
> That's where it seams impossible to manage even is we fix the fast attack...
- Attachments
-
- Fast blue array read.fsm
- (127.01 KiB) Downloaded 533 times
- Tepeix
- Posts: 361
- Joined: Sat Oct 16, 2021 3:11 pm
Re: Fast blue memin read with interpolation
For curiosity.. (because this might not be a really optimized way to do, and it do aliasing)
Here's a white fast sin array reader.
It only use an array of 32 memory, which make the aliasing.
The array is load in one cpu cycle each time a new note is done.
(for a 32 memory seams not so hard)
Maybe another interpolation could absorb some aliasing.
But it will take more cpu..
Here's a white fast sin array reader.
It only use an array of 32 memory, which make the aliasing.
The array is load in one cpu cycle each time a new note is done.
(for a 32 memory seams not so hard)
Maybe another interpolation could absorb some aliasing.
But it will take more cpu..
- Attachments
-
- Sin poly fast read (32array).fsm
- (58.65 KiB) Downloaded 514 times
- Tepeix
- Posts: 361
- Joined: Sat Oct 16, 2021 3:11 pm
2 posts
• Page 1 of 1
Who is online
Users browsing this forum: No registered users and 62 guests