# Old APIs

These APIs are outdated and might break in the future.

## Webdirt API (deprecated)

You can use the powerful sampling engine [Webdirt](https://github.com/dktr0/WebDirt) with Strudel.

{{ 'Pattern.webdirt' | jsdoc }}

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## Tone API (deprecated)

The Tone API uses Tone.js instruments ands effects to create sounds.

<MiniRepl
  tune={`stack(
    "[c5 c5 bb4 c5] [~ g4 ~ g4] [c5 f5 e5 c5] ~"
      .tone(synth(adsr(0,.1,0,0)).chain(out())),
    "[c2 c3]*8"
      .tone(synth({
        ...osc('sawtooth'),
        ...adsr(0,.1,0.4,0)
      }).chain(lowpass(300), out()))
  ).slow(4)`}
/>

### tone(instrument)

To change the instrument of a pattern, you can pass any [Tone.js Source](https://tonejs.github.io/docs/14.7.77/index.html) to .tone:

<MiniRepl
  tune={`"[c4 c4 bb3 c4] [~ g3 ~ g3] [c4 f4 e4 c4] ~".slow(4)
.tone(new FMSynth().toDestination())`}
/>

While this works, it is a little bit verbose. To simplify things, all Tone Synths have a shortcut:

```js
const amsynth = (options) => new AMSynth(options);
const duosynth = (options) => new DuoSynth(options);
const fmsynth = (options) => new FMSynth(options);
const membrane = (options) => new MembraneSynth(options);
const metal = (options) => new MetalSynth(options);
const monosynth = (options) => new MonoSynth(options);
const noise = (options) => new NoiseSynth(options);
const pluck = (options) => new PluckSynth(options);
const polysynth = (options) => new PolySynth(options);
const synth = (options) => new Synth(options);
const sampler = (options, baseUrl?) => new Sampler(options); // promisified, see below
const players = (options, baseUrl?) => new Sampler(options); // promisified, see below
```

### sampler

With sampler, you can create tonal instruments from samples:

<MiniRepl
  tune={`sampler({
  C5: 'https://freesound.org/data/previews/536/536549_11935698-lq.mp3'
}).then(kalimba => 
  saw.struct("x*8").mul(16).round()
  .legato(4).scale('D dorian').slow(2)
  .tone(kalimba.toDestination())
)`}
/>

The sampler function promisifies [Tone.js Sampler](https://tonejs.github.io/docs/14.7.77/Sampler).

Note that this function currently only works with this promise notation, but in the future,
it will be possible to use async instruments in a synchronous fashion.

### players

With players, you can create sound banks:

<MiniRepl
  tune={`players({
    bd: 'samples/tidal/bd/BT0A0D0.wav',
    sn: 'samples/tidal/sn/ST0T0S3.wav',
    hh: 'samples/tidal/hh/000_hh3closedhh.wav'
  }, 'https://loophole-letters.vercel.app/')
  .then(drums=>
  "bd hh sn hh".tone(drums.toDestination())
)
  `}
/>

The sampler function promisifies [Tone.js Players](https://tonejs.github.io/docs/14.7.77/Players).

Note that this function currently only works with this promise notation, but in the future,
it will be possible to use async instruments in a synchronous fashion.

### out

Shortcut for Tone.Destination. Intended to be used with Tone's .chain:

<MiniRepl
  tune={`"[c4 c4 bb3 c4] [~ g3 ~ g3] [c4 f4 e4 c4] ~".slow(4)
.tone(membrane().chain(out()))`}
/>

This alone is not really useful, so read on..

### vol(volume)

Helper that returns a Gain Node with the given volume. Intended to be used with Tone's .chain:

<MiniRepl
  tune={`"[c4 c4 bb3 c4] [~ g3 ~ g3] [c4 f4 e4 c4] ~".slow(4)
.tone(noise().chain(vol(0.5), out()))`}
/>

### osc(type)

Helper to set the waveform of a synth, monosynth or polysynth:

<MiniRepl
  tune={`"[c4 c4 bb3 c4] [~ g3 ~ g3] [c4 f4 e4 c4] ~".slow(4)
.tone(synth(osc('sawtooth4')).chain(out()))`}
/>

The base types are `sine`, `square`, `sawtooth`, `triangle`. You can also append a number between 1 and 32 to reduce the harmonic partials.

### lowpass(cutoff)

Helper that returns a Filter Node of type lowpass with the given cutoff. Intended to be used with Tone's .chain:

<MiniRepl
  tune={`"[c4 c4 bb3 c4] [~ g3 ~ g3] [c4 f4 e4 c4] ~".slow(4)
.tone(synth(osc('sawtooth')).chain(lowpass(800), out()))`}
/>

### highpass(cutoff)

Helper that returns a Filter Node of type highpass with the given cutoff. Intended to be used with Tone's .chain:

<MiniRepl
  tune={`"[c4 c4 bb3 c4] [~ g3 ~ g3] [c4 f4 e4 c4] ~".slow(4)
.tone(synth(osc('sawtooth')).chain(highpass(2000), out()))`}
/>

### adsr

Helper to set the envelope of a Tone.js instrument. Intended to be used with Tone's .set:

<MiniRepl
  tune={`"[c4 c4 bb3 c4] [~ g3 ~ g3] [c4 f4 e4 c4] ~".slow(4)
.tone(synth(adsr(0,.1,0,0)).chain(out()))`}
/>