160 lines
3.1 KiB
Markdown
160 lines
3.1 KiB
Markdown
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## Installing
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You need to install SuperCollider and the Dr Racket package.
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### 1. Installing SuperCollider
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Go to https://supercollider.github.io/download.html and download the latest version (3.6.6 as of the time of writing.)
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Then follow these instructions per operating system.
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#### Linux
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- install jack
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#### Windows
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#### Mac OS X
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### 2. Installing oregano
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This can be installed in two different ways:
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- Either through the command line: `raco pkg install rsc3`
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- Or through DrRacket: TODO
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## Concepts
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You can play notes from instruments on specific tracks.
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The purpose of playing notes on different tracks is we can have different filters on different tracks. For example, the melody track can have a low pass filter, and and the drums track could have a delay filter.
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- Instrument: This is equivalent to choosing what the note sounds like. There are default instruments (saw wave, piano, etc.) and you can also define your own using samples.
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- Note: specifies a key from an instrument, and can be played on a track
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- Track: a place to play notes and add filters.
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- Filters: can be added to a track. The order in which they are added matters.
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## Examples
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### 1. Creating an instrument
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You can either use a preset instrument or define your own instrument
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```clj
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;; this uses the piano preset
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(define my-piano (preset-instrument 'piano))
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;; create a custom instrument
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;; can use oscilators and envelopes
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;; "freq" is the frequency parameter
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(define-instrument my-custom-inst (mul (sin 20) (sin "freq")))
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;; add envelope to instrument
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(define my-inst (preset-instrument "sine"
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(envelope A S D R))
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```
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### 2. Playing a note
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Now that we have an instrument, we can use it to play notes on a specific track.
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;; this plays the key C#, octave 3 on track 2.
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(note-on my-piano C#3 track2)
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;; to stop playing
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(note-off my-piano C#3 track2)
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;; TODO - find a way to turn off a note, or make a note play for a specific time
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### 3. Add filters to a track
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You can add filters to a specific track.
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(add-effect track3 (reverb 0.5 0.9))
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## Functions
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### Oscilators
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These can be used in defining instruments.
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- sin, saw, tringle, square
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-
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### mouse-x and mouse-y
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You can parameters to filters and instruments using the mouse.
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(mouse-x start-value end-value)
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For example, if you want to control the cutoff frequency for a filter using the left-right position of the mouse.
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(add-effect track3 (low-pass-filter resonance
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(mouse-x kr 200 500)))
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When the mouse is at the left of the screen, the frequency is 200, when the mouse is at the right, the frequency is 500.
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### List of Filters
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- hpf, lpf
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- moog
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- reverb
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- delay
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- comb
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### Loading samples
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* (load-sample file-name)
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* (play-sample sample)
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---
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##
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### Sliders
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(add-effect track3 (low-pass-filter resonance
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(slider "name" 200 500 300)))
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How should I deal with one instrument on multiple tracks?
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keep a list of instruments per track.
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create a separate synth per track.
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; bus = 2
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; should create a new synth
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(play-note my-inst 880 track2)
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; bus = 3
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(play-note my-inst 880 track3)
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