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categorize effects + add envelope doc
+ use short, more logical filter params as default
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Felix Roos
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@ -83,8 +83,7 @@ const generic_params = [
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*/
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['f', 'amp', 'like @gain@, but linear.'],
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/**
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* A pattern of numbers to specify the attack time of an envelope applied to each sample.
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* [More info about envelopes](/learn/synths-samples-effects/#envelope)
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* Amplitude envelope attack time: Specifies how long it takes for the sound to reach its peak value, relative to the onset.
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*
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* @name attack
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* @param {number | Pattern} attack time in seconds.
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@ -92,11 +91,7 @@ const generic_params = [
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* note("c3 e3").attack("<0 .1 .5>")
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*
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*/
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[
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'f',
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'attack',
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'a pattern of numbers to specify the attack time (in seconds) of an envelope applied to each sample.',
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],
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['f', 'attack'],
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/**
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* Select the sound bank to use. To be used together with `s`. The bank name (+ "_") will be prepended to the value of `s`.
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@ -110,8 +105,8 @@ const generic_params = [
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['f', 'bank', 'selects sound bank to use'],
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/**
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* Gain envelope decay time = the time it takes after the attack time to reach the sustain level.
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* [More info about envelopes](/learn/synths-samples-effects/#envelope)
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* Amplitude envelope decay time: the time it takes after the attack time to reach the sustain level.
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* Note that the decay is only audible if the sustain value is lower than 1.
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*
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* @name decay
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* @param {number | Pattern} time decay time in seconds
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@ -121,7 +116,7 @@ const generic_params = [
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*/
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['f', 'decay', ''],
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/**
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* Gain envelope sustain level. [More info about envelopes](/learn/synths-samples-effects/#envelope)
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* Amplitude envelope sustain level: The level which is reached after attack / decay, being sustained until the offset.
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*
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* @name sustain
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* @param {number | Pattern} gain sustain level between 0 and 1
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@ -131,7 +126,7 @@ const generic_params = [
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*/
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['f', 'sustain', ''],
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/**
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* Gain envelope release time. [More info about envelopes](/learn/synths-samples-effects/#envelope)
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* Amplitude envelope release time: The time it takes after the offset to go from sustain level to zero.
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*
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* @name release
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* @param {number | Pattern} time release time in seconds
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@ -151,30 +146,30 @@ const generic_params = [
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],
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// TODO: in tidal, it seems to be normalized
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/**
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* Sets the center frequency of the band-pass filter.
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* Sets the center frequency of the **b**and-**p**ass **f**ilter.
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*
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* @name bandf
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* @name bpf
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* @param {number | Pattern} frequency center frequency
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* @synonyms bpf
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* @synonyms bandf
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* @example
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* s("bd sd,hh*3").bandf("<1000 2000 4000 8000>")
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* s("bd sd,hh*3").bpf("<1000 2000 4000 8000>")
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*
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*/
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['f', 'bandf', 'A pattern of numbers from 0 to 1. Sets the center frequency of the band-pass filter.'],
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['f', 'bpf', ''],
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['f', 'bandf', 'A pattern of numbers from 0 to 1. Sets the center frequency of the band-pass filter.'],
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// TODO: in tidal, it seems to be normalized
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/**
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* Sets the q-factor of the band-pass filter
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* Sets the **b**and-**p**ass **q**-factor (resonance)
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*
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* @name bandq
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* @name bpq
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* @param {number | Pattern} q q factor
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* @synonyms bpq
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* @synonyms bandq
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* @example
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* s("bd sd").bandf(500).bandq("<0 1 2 3>")
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* s("bd sd").bpf(500).bpq("<0 1 2 3>")
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*
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*/
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['f', 'bandq', 'a pattern of anumbers from 0 to 1. Sets the q-factor of the band-pass filter.'],
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['f', 'bpq', ''],
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['f', 'bandq', 'a pattern of anumbers from 0 to 1. Sets the q-factor of the band-pass filter.'],
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/**
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* a pattern of numbers from 0 to 1. Skips the beginning of each sample, e.g. `0.25` to cut off the first quarter from each sample.
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*
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@ -284,46 +279,46 @@ const generic_params = [
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/**
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* Applies the cutoff frequency of the low-pass filter.
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*
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* @name cutoff
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* @name lpf
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* @param {number | Pattern} frequency audible between 0 and 20000
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* @synonyms lpf
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* @synonyms cutoff
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* @example
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* s("bd sd,hh*3").cutoff("<4000 2000 1000 500 200 100>")
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*
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*/
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['f', 'cutoff', 'a pattern of numbers from 0 to 1. Applies the cutoff frequency of the low-pass filter.'],
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['f', 'lpf'],
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['f', 'cutoff', 'a pattern of numbers from 0 to 1. Applies the cutoff frequency of the low-pass filter.'],
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/**
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* Applies the cutoff frequency of the high-pass filter.
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*
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* @name hcutoff
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* @name hpf
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* @param {number | Pattern} frequency audible between 0 and 20000
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* @synonyms hpf
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* @synonyms hcutoff
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* @example
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* s("bd sd,hh*4").hcutoff("<4000 2000 1000 500 200 100>")
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*
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*/
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['f', 'hcutoff', ''],
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['f', 'hpf', ''],
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['f', 'hcutoff', ''],
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/**
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* Applies the resonance of the high-pass filter.
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*
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* @name hresonance
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* @name hpq
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* @param {number | Pattern} q resonance factor between 0 and 50
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* @synonyms hpq
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* @synonyms hresonance
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* @example
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* s("bd sd,hh*4").hcutoff(2000).hresonance("<0 10 20 30>")
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*
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*/
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['f', 'hpq', ''],
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['f', 'hresonance', ''],
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['f', 'hpq', ''],
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// TODO: add hpq synonym
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/**
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* Applies the cutoff frequency of the low-pass filter.
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*
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* @name resonance
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* @name lpq
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* @param {number | Pattern} q resonance factor between 0 and 50
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* @synonyms lpq
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* @synonyms resonance
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* @example
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* s("bd sd,hh*4").cutoff(2000).resonance("<0 10 20 30>")
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*
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@ -12,13 +12,96 @@ import { JsDoc } from '../../docs/JsDoc';
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Wether you're using a synth or a sample, you can apply any of the following built-in audio effects.
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As you might suspect, the effects can be chained together, and they accept a pattern string as their argument.
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## bandf
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# Filters
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<JsDoc client:idle name="bandf" h={0} />
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Filters are an essential building block of [subtractive synthesis](https://en.wikipedia.org/wiki/Subtractive_synthesis).
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Strudel comes with 3 types of filters:
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## bandq
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- low-pass filter: low frequencies may _pass_, high frequencies are cut off
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- high-pass filter: high frequencies may _pass_, low frequencies are cut off
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- band-pass filters: only a frequency band may _pass_, low and high frequencies around are cut off
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<JsDoc client:idle name="bandq" h={0} />
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Each filter has 2 parameters:
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- cutoff: the frequency at which the filter starts to work. e.g. a low-pass filter with a cutoff of 1000Hz allows frequencies below 1000Hz to pass.
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- q-value: Controls the resonance of the filter. Higher values sound more aggressive. Also see [Q-Factor](https://en.wikipedia.org/wiki/Q_factor)
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## lpf
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<JsDoc client:idle name="lpf" h={0} />
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## lpq
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<JsDoc client:idle name="lpq" h={0} />
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## hpf
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<JsDoc client:idle name="hpf" h={0} />
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## hpq
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<JsDoc client:idle name="hpq" h={0} />
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## bpf
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<JsDoc client:idle name="bpf" h={0} />
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## bpq
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<JsDoc client:idle name="bpq" h={0} />
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## vowel
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<JsDoc client:idle name="vowel" h={0} />
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# Amplitude Envelope
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The amplitude [envelope](<https://en.wikipedia.org/wiki/Envelope_(music)>) controls the dynamic contour of a sound.
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Strudel uses ADSR envelopes, which are probably the most common way to describe an envelope:
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## attack
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<JsDoc client:idle name="attack" h={0} />
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## decay
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<JsDoc client:idle name="decay" h={0} />
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## sustain
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<JsDoc client:idle name="sustain" h={0} />
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## release
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<JsDoc client:idle name="release" h={0} />
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# Dynamics
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## gain
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<JsDoc client:idle name="gain" h={0} />
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## velocity
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<JsDoc client:idle name="velocity" h={0} />
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# Panning
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## jux
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<JsDoc client:idle name="jux" h={0} />
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## juxBy
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<JsDoc client:idle name="juxBy" h={0} />
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## pan
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<JsDoc client:idle name="pan" h={0} />
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# Waveshaping
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## coarse
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@ -28,50 +111,10 @@ As you might suspect, the effects can be chained together, and they accept a pat
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<JsDoc client:idle name="crush" h={0} />
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## cutoff
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<JsDoc client:idle name="cutoff" h={0} />
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## gain
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<JsDoc client:idle name="gain" h={0} />
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## hcutoff
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<JsDoc client:idle name="hcutoff" h={0} />
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## hresonance
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<JsDoc client:idle name="hresonance" h={0} />
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## pan
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<JsDoc client:idle name="pan" h={0} />
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## resonance
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<JsDoc client:idle name="resonance" h={0} />
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## shape
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<JsDoc client:idle name="shape" h={0} />
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## velocity
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<JsDoc client:idle name="velocity" h={0} />
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## vowel
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<JsDoc client:idle name="vowel" h={0} />
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## jux
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<JsDoc client:idle name="jux" h={0} />
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## juxBy
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<JsDoc client:idle name="juxBy" h={0} />
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# Global Effects
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## Local vs Global Effects
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