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begin webaudio tutorial
This commit is contained in:
Felix Roos
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@ -11,7 +11,7 @@ const generic_params = [
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/**
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* Select a sound / sample by name.
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*
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* <details>
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* <details style={{display:'none'}}>
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* <summary>show all sounds</summary>
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*
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* 808 (6) 808bd (25) 808cy (25) 808hc (5) 808ht (5) 808lc (5) 808lt (5) 808mc (5) 808mt (5) 808oh (5) 808sd (25) 909 (1) ab (12) ade (10) ades2 (9) ades3 (7) ades4 (6) alex (2) alphabet (26) amencutup (32) armora (7) arp (2) arpy (11) auto (11) baa (7) baa2 (7) bass (4) bass0 (3) bass1 (30) bass2 (5) bass3 (11) bassdm (24) bassfoo (3) battles (2) bd (24) bend (4) bev (2) bin (2) birds (10) birds3 (19) bleep (13) blip (2) blue (2) bottle (13) breaks125 (2) breaks152 (1) breaks157 (1) breaks165 (1) breath (1) bubble (8) can (14) casio (3) cb (1) cc (6) chin (4) circus (3) clak (2) click (4) clubkick (5) co (4) coins (1) control (2) cosmicg (15) cp (2) cr (6) crow (4) d (4) db (13) diphone (38) diphone2 (12) dist (16) dork2 (4) dorkbot (2) dr (42) dr2 (6) dr55 (4) dr_few (8) drum (6) drumtraks (13) e (8) east (9) electro1 (13) em2 (6) erk (1) f (1) feel (7) feelfx (8) fest (1) fire (1) flick (17) fm (17) foo (27) future (17) gab (10) gabba (4) gabbaloud (4) gabbalouder (4) glasstap (3) glitch (8) glitch2 (8) gretsch (24) gtr (3) h (7) hand (17) hardcore (12) hardkick (6) haw (6) hc (6) hh (13) hh27 (13) hit (6) hmm (1) ho (6) hoover (6) house (8) ht (16) if (5) ifdrums (3) incoming (8) industrial (32) insect (3) invaders (18) jazz (8) jungbass (20) jungle (13) juno (12) jvbass (13) kicklinn (1) koy (2) kurt (7) latibro (8) led (1) less (4) lighter (33) linnhats (6) lt (16) made (7) made2 (1) mash (2) mash2 (4) metal (10) miniyeah (4) monsterb (6) moog (7) mouth (15) mp3 (4) msg (9) mt (16) mute (28) newnotes (15) noise (1) noise2 (8) notes (15) numbers (9) oc (4) odx (15) off (1) outdoor (6) pad (3) padlong (1) pebbles (1) perc (6) peri (15) pluck (17) popkick (10) print (11) proc (2) procshort (8) psr (30) rave (8) rave2 (4) ravemono (2) realclaps (4) reverbkick (1) rm (2) rs (1) sax (22) sd (2) seawolf (3) sequential (8) sf (18) sheffield (1) short (5) sid (12) sine (6) sitar (8) sn (52) space (18) speakspell (12) speech (7) speechless (10) speedupdown (9) stab (23) stomp (10) subroc3d (11) sugar (2) sundance (6) tabla (26) tabla2 (46) tablex (3) tacscan (22) tech (13) techno (7) tink (5) tok (4) toys (13) trump (11) ul (10) ulgab (5) uxay (3) v (6) voodoo (5) wind (10) wobble (1) world (3) xmas (1) yeah (31)
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@ -23,7 +23,7 @@ const generic_params = [
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* @name s
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* @param {string | Pattern} sound The sound / pattern of sounds to pick
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* @example
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* s("bd hh").osc()
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* s("bd hh").out()
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*
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*/
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['s', 's', 'sound'],
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@ -82,14 +82,14 @@ export const loadGithubSamples = async (path, nameFn) => {
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};
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/**
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* load the given sample map for webdirt
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* Loads a collection of samples to use with `s`
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*
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* @example
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* loadSamples({
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* bd: '808bd/BD0000.WAV',
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* sd: ['808sd/SD0000.WAV','808sd/SD0010.WAV','808sd/SD0050.WAV']
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* samples({
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* bd: '808bd/BD0000.WAV',
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* sd: '808sd/SD0010.WAV'
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* }, 'https://raw.githubusercontent.com/tidalcycles/Dirt-Samples/master/');
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* s("bd <sd!7 sd(3,4,2)>").n(2).webdirt()
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* s("[bd ~]*2, [~ hh]*2, ~ sd").out()
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*
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*/
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@ -186,14 +186,153 @@ resulting in a rhythmical structure of "x ~ ~ x ~ ~ x ~" (3 beats over 8 segment
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<MiniRepl tune={`"e5(2,8) b4(3,8) d5(2,8) c5(3,8)".slow(4)`} />
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## Mini Notation TODO
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<br />
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Compared to [tidal mini notation](https://tidalcycles.org/docs/patternlib/tutorials/mini_notation/), the following mini notation features are missing from Strudel:
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# Web Audio Output
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The default way to output sound is by using the Web Audio Output.
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Here is a little beat to show some of the possibilities:
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<MiniRepl
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tune={`samples({
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bd: ['bd/BT0AADA.wav','bd/BT0AAD0.wav','bd/BT0A0DA.wav','bd/BT0A0D3.wav','bd/BT0A0D0.wav','bd/BT0A0A7.wav'],
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sd: ['sd/rytm-01-classic.wav','sd/rytm-00-hard.wav'],
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hh: ['hh27/000_hh27closedhh.wav','hh/000_hh3closedhh.wav'],
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}, 'github:tidalcycles/Dirt-Samples/master/');
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stack(
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s("bd,[~ <sd!3 sd(3,4,2)>],hh(3,4)") // drums
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.speed(perlin.range(.7,.9)) // random sample speed variation
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,"<a1 b1\*2 a1(3,8) e2>" // bassline
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.off(1/8,x=>x.add(12).degradeBy(.5)) // random octave jumps
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.add(perlin.range(0,.5)) // random pitch variation
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.superimpose(add(.05)) // add second, slightly detuned voice
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.n() // wrap in "n"
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.decay(.15).sustain(0) // make each note of equal length
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.s('sawtooth') // waveform
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.gain(.4) // turn down
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.cutoff(sine.slow(7).range(300,5000)) // automate cutoff
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,"<Am7!3 <Em7 E7b13 Em7 Ebm7b5>>".voicings() // chords
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.superimpose(x=>x.add(.04)) // add second, slightly detuned voice
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.add(perlin.range(0,.5)) // random pitch variation
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.n() // wrap in "n"
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.s('sawtooth') // waveform
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.gain(.16) // turn down
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.cutoff(500) // fixed cutoff
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.attack(1) // slowly fade in
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)
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.slow(3/2)
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.out()`}
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/>
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## Synths
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So far, all the mini notation examples all used the same sound, which is kind of boring.
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We can change the sound, using the `s` function:
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<MiniRepl tune={`note("c2 <eb2 <g2 g1>>").s('sawtooth').out()`} />
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Here, we are wrapping our notes inside `note` and set the sound using `s`, connected by a dot.
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Those functions are only 2 of many ways to alter the properties, or _params_ of a sound.
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The power of patterns allows us to sequence any _param_ independently:
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<MiniRepl tune={`note("c2 <eb2 <g2 g1>>").s("<sawtooth square triangle>").out()`} />
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Now we not only pattern the notes, but the sound as well!
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`sawtooth` `square` and `triangle` are the basic waveforms available in `s`.
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## Samples
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Besides Synths, `s` can also play back samples:
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<MiniRepl tune={`s("bd sd,hh*8,misc/2").out()`} />
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To know which sounds are available, open the [default sample map](https://strudel.tidalcycles.org/EmuSP12.json)
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### Custom Samples
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You can load your own sample map like this:
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<MiniRepl
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tune={`samples({
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bd: 'https://raw.githubusercontent.com/tidalcycles/Dirt-Samples/master/bd/BT0AADA.wav',
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sd: 'https://raw.githubusercontent.com/tidalcycles/Dirt-Samples/master/sd/rytm-01-classic.wav',
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hh: 'https://raw.githubusercontent.com/tidalcycles/Dirt-Samples/master/hh27/000_hh27closedhh.wav',
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});
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s("bd sd,hh*8").out()`}
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/>
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The `samples` function takes an object where the properties are the sound names and the values are urls to audio files.
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As most sample packs will be loaded from the same location, you can set the base url using the second argument:
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<MiniRepl
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tune={`samples({
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bd: 'bd/BT0AADA.wav',
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sd: 'sd/rytm-01-classic.wav',
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hh: 'hh27/000_hh27closedhh.wav',
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}, 'https://raw.githubusercontent.com/tidalcycles/Dirt-Samples/master/');
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s("bd sd,hh*8").out()`}
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/>
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Because github is a popular choice to dump samples, there is a shortcut for that:
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<MiniRepl
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tune={`samples({
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bd: 'bd/BT0AADA.wav',
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sd: 'sd/rytm-01-classic.wav',
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hh: 'hh27/000_hh27closedhh.wav',
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}, 'github:tidalcycles/Dirt-Samples/master/');
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s("bd sd,hh*8").out()`}
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/>
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The format is `github:user/repo/branch/`.
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It is also possible, to declare multiple files for one sound, using the array notation:
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<MiniRepl
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tune={`samples({
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bd: ['bd/BT0AADA.wav','bd/BT0AAD0.wav'],
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sd: ['sd/rytm-01-classic.wav','sd/rytm-00-hard.wav'],
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hh: ['hh27/000_hh27closedhh.wav','hh/000_hh3closedhh.wav'],
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}, 'github:tidalcycles/Dirt-Samples/master/');
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s("<bd:0 bd:1 bd:2 bd:3>,~ <sd:0 sd:1>,[hh:0 hh:1]*2").out()`}
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/>
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The `:0` `:1` etc. are the indices of the array.
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For pitched samples, you can use `note`, just like with synths:
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<MiniRepl
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tune={`samples({
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"gtr": 'gtr/0001_cleanC.wav',
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}, 'github:tidalcycles/Dirt-Samples/master/');
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note("g3 [bb3 c4] <g4 f4 eb4 f3>@2").s('gtr').gain(.5).out()`}
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/>
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Here, the guitar samples will overlap, because they always play till the end.
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If we want them to behave more like a synth, we can add `clip(1)`:
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<MiniRepl
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tune={`samples({
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"gtr": 'gtr/0001_cleanC.wav',
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}, 'github:tidalcycles/Dirt-Samples/master/');
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note("g3 [bb3 c4] <g4 f4 eb4 f3>@2").s('gtr').clip(1)
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.gain(.5).out()`}
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/>
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If we have 2 samples with different base pitches, we can make them in tune by specifying the pitch like this:
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<MiniRepl
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tune={`samples({
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"gtr": 'gtr/0001_cleanC.wav',
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"moog": { 'g3': 'moog/005_Mighty%20Moog%20G3.wav' },
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}, 'github:tidalcycles/Dirt-Samples/master/');
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note("g3 [bb3 c4] <g4 f4 eb4 f3>@2").s("gtr,moog").clip(1)
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.gain(.5).out()`}
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/>
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If a sample has no pitch set, `c3` is the default.
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- [ ] Tie symbols "\_"
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- [ ] feet marking "."
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- [ ] Polymetric sequences "{ ... }"
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- [ ] Fixed steps using "%"
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<br />
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