In one of his latest videos, Polarity rebuilt CamelCrusher, the classic distortion plugin inside Bitwig Grid. I'm trying a different, more analytical approach here, that leads to a nearly 100% copy of the original distortion unit, that you can also build in Bitwig's Polygrid based on these two images:
Mech: https://www.dropbox.com/scl/fi/v8zn7bkvz22x7xbw0qz9p/CamelCrusher_Mech.png?rlkey=zkwoyek5utfk0em9a10adpt3c&dl=0
Tube: https://www.dropbox.com/scl/fi/57sozlrkw0csip2v10hfv/CamelCrusher_Tube.png?rlkey=gog19yhcipb6vqvy8ptmjkgtx&dl=0
As usual, I'm building the patch in Alpha Forever Modular, but the same mindset will work in any other patcher capable of doing DSP-like stuff. We will analyze the transfer function of the plugin and reproduce each behavior we encounter.
Polarity's build on the Polarity Music channel:
https://youtu.be/9vZe7DPRNaM
Timestamps:
00:00 Hi
00:25 We do not care about the filter
00:38 About the compressor
00:55 Master settings
01:06 Bitwig grid patch is possible
01:30 Start patching
01:42 Saw wave represents the transfer function
02:00 What the 'Mech' does
02:15 Breakpoint/Threshold
02:27 The function is symmetric
02:34 What the absolute function does
02:48 Deriving the sign from the absolute value
03:27 Multiply the Abs with the sign to flip the signal
03:50 Finding the slope
05:00 Inserting the breakpoint
05:50 Rescale from threshold to 1
06:50 Mech distorter done
07:14 Designer for Mech
07:38 Modifying Mech to Tube
08:13 Finding the new threshold
08:37 New maximum slope
08:50 The curve
08:58 Cosine function
09:32 Transforming the cosine
09:50 ACos function
10:00 Matching ACos (0..2Pi) to Cos (0..1)
10:37 One more thing to do with the ACos
11:00 The last touch
12:00 Done
12:14 Wrap up everything, final tests
14:55 Building this in Bitwig Grid
15:35 The Bitwig Grid patches
17:06 Final thoughts, extending possibilities
18:45 Bye
Our Discord server: https://discord.gg/QXQyQhRfQV
We are developing Alpha Forever Modular, a modular VST plugin, and sound design tool.
My latest release made using Alpha Forever sounds only:
https://youtu.be/Hks0Gat8XnY
Follow me at:
Facebook: https://www.facebook.com/9b0music
Spotify: https://open.spotify.com/artist/3LWp7Y5CCVs1HN9BG06YAw?si=X48ukA7FSVOTf9dWssMNgg
Soundcloud: https://soundcloud.com/9b0
Bandcamp: https://9b0music.bandcamp.com/follow_me
Discord: https://discord.gg/QXQyQhRfQV
Know more about Alpha Forever Modular:
https://afmodular.com