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# DEL2

A delay that you play like an instrument.
The delay that you play!

https://github.com/user-attachments/assets/cd501d5a-0c7d-404d-b970-8f6272594568

In VST3 and CLAP format, for Linux, Mac and Windows.


## Features & Quickstart

- **Midi rhythm delay**
You record a delay rhythm by playing midi notes into the plugin.
The first note starts counting, and each note after that creates a delay tap, with a maximum of 16.

- Independent **effects per tap**
- A **moog style filter** with creamy drive
The parameters are (optionally) linked to velocity and note.
- **Panning**, linked to the note
- Four **midi triggers:**
- **mute input**
- **mute output**
- **clear taps**
- **lock taps**
- There are two modes for the input and output mute: "toggle" and "direct":
- **Toggle-mode** is how most mutes work: the triggers turn the mute on when it's off and vice versa.
- **Direct-mode** is more like an instrument: the mute is on by default and the trigger turns it off only as long as you hold the trigger note.
- The rhythm pattern is saved alongside the other parameters in the preset and DAW session.
- Stereo from end to end

## Manual

### Installation
Download the zip from [here](https://github.com/magnetophon/DEL2/releases/tag/V0.3.0), unpack it, and copy the .vst3 or .clap to your plugin folder.
Mac users will have to [disable GateKeeper](https://disable-gatekeeper.github.io/)

### Before you start
- Connect a midi source.
This can be an instrument, a foot-pedal, a sequencer, or anything else that sends midi.
- Connect an audio source.
Most DAWs allow you to send a live or recorded audio track into the plugin, alongside the midi from the previous step.
You could also put an instrument plugin before DEL2 and use the audio from that.

### Recording a rhythm
The first note starts counting, and each note after that creates a delay tap.
The **max tap** slider sets how long a tap can take.
The pink line in the graph shows how much time there is left to add new taps to the rhythm
Every time you add a tap, the counter resets.
**min tap** is the minimum time between two taps, mainly for de-bouncing, but it can also be used creatively.
**sync** lets you choose between a free running delay, or one synced to the host tempo.
BPM mode doesn't quantize the tap timing; it just changes the duration of the taps when the host tempo changes.
**listen to** lets you choose which midi channel the rhythm notes come from: "any channel", or 1 to 16

### Filters
There's a set of filter parameters for low velocity and one for high velocity.
Each individual filter follows the velocity of the tap.
You can also link the note to the cutoff frequency, to play melodies with the resonance.
**vel>cut** sets how much influence the velocity has on the cutoff.
**note>cut** sets how much influence the notes have on the cutoff.
**drive** lets you adjust how much the filter distorts
If the input is loud, high drive can sound quieter than low drive.
**mode** lets you choose between low-pass, high-pass, and notch filters of various steepness.

### Panning
By playing lower or higher notes, you pan each tap to the left or right.
The first note determines the center of the stereo image
The **center** slider allows you to change that to another note.
**panning amount** controls how much each note is panned.

Not just the delay and the filter, but also the panner is fully stereo.
Instead of turning down the level for one channel a lot, when you want tox pan to the other side, these panners ad a tiny bit more delay to one side, and they make that side slightly duller and quieter.
The overall effect is that the sound seems to be coming from the opposite side.
The signal retains it's stereo-width: sounds that where coming from the opposite side of where you panned, will still mostly come from there.

### Triggers
To set which note controls the trigger, just click the button and play a note.
- There are two modes for the input and output mute: "toggle" and "direct":
- **Toggle-mode** is how most mutes work: the triggers turn the mute on when it's off and vice versa.
- **Direct-mode** is more like an instrument: the mute is on by default and the trigger turns it off only as long as you hold the trigger note.
it also (retroactively) turns the other mute off when you press it.
**attack** and **release** set how long it takes for the mute to turn on or off.

### Other parameters
**dry/wet** mix between the unaltered dry signal and the effect.
**wet gain**this is a post effect make up gain.
**global drive*** lets you adjust the overall amount of distortion.

## Current features

- Tap a rhythm into it using midi
- Each delay tap has a separate moog style filter
- The filter parameters are pair of settings, and each tap's settings is an interpolation between these two, depending on the velocity
- You can also link the cutoff frequency to the note
- A haas panner that you can link to the note
- 4 triggers, controlled by a learnable midi note:
- mute input
- mute output
- clear taps
- lock taps
- There are two modes for the input and output mute: toggle-mode and direct-mode:
- In toggle-mode, the trigger note for mute toggles the respective mute
- In direct-mode, the trigger note switches it on when you press it, and off when you let it go
The note also (retroactively) turns the other mute off when you press it.
- The status of the triggers and the current tap pattern are saved and retrieved alongside the preset or DAW session.

## Planned features

- Expand the DSP per tap to:
- two non-linear filters
- a reverb
- a HRTF panner
- a pitch shifter that shifts the difference between the initial timing tap note and the current tap note
- a Karplus-Strong per tap, at the pitch of the note
- Compressor and ducker on the output
- Optional individual settings per tap
- Optional auxiliary outputs per tap
- BPM sync, scale and quantization
- Tap the rhythm using your computer keyboard or side-channel audio
- A third mode for the mutes:
- In instrument-mode, the first note you play will be silent, and start recording a new pattern, as always.
The next eight notes will be like playing an sampler, that plays the sample you started recording at the beginning of the pattern.
When you let go of a note, the tap will start the release phase.
The state of the mute switches will determine if a note turns on and off the input, the output, or both.
When you switch to instrument-mode, it turns on "mute in" and turns off "mute out", so by default the notes you play

## Thanks

Expand All @@ -52,4 +94,4 @@ This plugin would not have been possible without the following projects:
- [va-filter](https://github.com/Fredemus/va-filter)
- [synfx-dsp](https://github.com/WeirdConstructor/synfx-dsp)

I would like to thank [Robbert van der Helm](https://github.com/robbert-vdh), [Fredemus](https://github.com/Fredemus) and [WeirdConstructor](https://github.com/WeirdConstructor) for their fantastic support and feedback!
I would like to thank [Robbert van der Helm](https://github.com/robbert-vdh), [Dr George Atkinson](https://github.com/geom3trik), [Fredemus](https://github.com/Fredemus) and [WeirdConstructor](https://github.com/WeirdConstructor) for their fantastic support and feedback!

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