Strike v1.3.0 - LPG/Filter/Envelope/Compressor/Etc

Strike is a collection of DSP units based around the LPG I released previously.

Since these are all written in the DSP layer, CPU usage is very low ~1-2.5%

Strike (LPG)
strike
A lowpass gate using the envelope from arc and a 12dB/oct biquad filter.

Also includes EOF/EOR gate outputs from the rise/fall controls as well as the envelope out from the height control.

Arc (AD)
arc
arc-wave
An AD envelope with loop toggle and bend control.

Also includes EOF/EOR gate outputs from the rise/fall controls.

Bique (BCF)
bique
A multi-mode biquad cascade filter with options for lowpass, bandpass, and highpass at either 12dB/oct, 24dB/oct, or 36dB/oct. Modeled after the equations outlined here by Robert Bristow-Johnson.

Output is tanh limited to give distortion at higher gain levels. This is particularly useful when pinging the filter at high resonance.

Sieve (SVF)
sieve
A state variable filter that mixes between lowpass, bandpass, and highpass. Modeled after the algorithm designed by Andrew Simper outlined here.

Output is tanh limited to give distortion at higher gain levels. This is particularly useful when pinging the filter at high resonance.

Fin (Osc)
fin
fin-wave
A “fin” wave oscillator, so called because the wave resembles a shark fin.

Essentially this is just a different configuration of arc as an oscillator.

Formant (Osc)
formant
formant-wave
A formant oscillator based on the Mangrove module by Whimsical Raps.

Softy (Osc)
softy
softy-wave
A triangle (atan) oscillator with soft sync.

Tanh Bonus unit :wink:
tanh
Limits the incoming signal with a tanh function.

CPR
cpr
cpr-sub
A stereo peak compressor with sidechain and optional auto makeup gain. Also includes outputs for gain reduction and a gate when the compressor is active.

Lift (LPG)
lift

A lowpass gate using a slew limiter envelope and a 6dB/oct filter.

Also includes the slew output from the height control.

:star:Download from the hub here!

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Pinging Sieve with a pulse wave and sequencing with Turing from lojik:

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Looping Strike over a pulse wave and using the EOF out to hard sync the oscillator:

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Ok last one I promise: looping Strike over a vari-speed player and using the EOF to re-trigger the sample! This technique is actually quite a lot of fun when changing the slice around.

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It’s on the hub https://er301-hub.netlify.app/projects/strike Thanks for these @tomf !

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Very very very awesome! Congrats!

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Thanks for sharing this! Strike and the Videos! Fantastic Work! Congrats!

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Remade your first demo last night. Was a lot of fun. Thanks!

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Nice! Always good to hear that it’s working somewhere else :wink:

Just fabulous- I’m so happy with the direction of the 301!
Fabulous work!

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This is amazing. Had a little play with the Arc Unit and it’s perfect for my purposes. I love that the bend doesn’t change the length and that it has a built in height control. Thanks for all the hard work! Looking forward to trying the rest.

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A question about the Tanh unit. Docs say “Limits the incoming signal with a tanh function.” I don’t know what a tanh function is so I’m wondering, is there a way to explain it differently? It seems to me that part of the usefulness of this unit is the gain control, so it’s more than a signal limiter right?

Basically it takes an input and maps the output to a hyperbolic tangent..

your input would be on the x axis of that graph and the output is height of the curve at that point. Basically it clips the input, but in a soft way. With the right settings this can turn a triangle wave into a sine wave. you can use it for limiting, distortion, waveshaping, etc. It is essentially just soft clipping.

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Thanks for the explanation! This would be great to add to the docs, image included.

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You got it :+1: Explain the tanh unit better by tmfset · Pull Request #16 · bparticle/er301-hub · GitHub

btw some of the new images aren’t showing up, needs a cache refresh maybe?

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:star_struck: Awesome

Yeah
EDIT: :thinking: that didn’t work though, weird…

My guess is because the src references a png but the img is gif. I’d fix myself right now but am on phone.

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Lol oops yea that makes sense Fix image extension by tmfset · Pull Request #17 · bparticle/er301-hub · GitHub

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Update coming soon :wink:

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Strike v1.1.0 is up.

:star:New Units:star:

Formant (Osc)
formant
formant-wave
A formant oscillator based on the Mangrove module by Whimsical Raps.

Softy (Osc)
softy
softy-wave
softy-wave2
A triangle (atan) oscillator with soft sync. Makes for a great LFO when synced to an envelope.

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