A wrapper around the MediaRecorder API. Unlike the rest of Tone.js, this module does not offer any sample-accurate scheduling because it is not a feature of the MediaRecorder API. This is only natively supported in Chrome and Firefox. For a cross-browser shim, install (audio-recorder-polyfill)[https://www.npmjs.com/package/audio-recorder-polyfill].
const recorder = new Tone.Recorder();
const synth = new Tone.Synth().connect(recorder);
// start recording
recorder.start();
// generate a few notes
synth.triggerAttackRelease("C3", 0.5);
synth.triggerAttackRelease("C4", 0.5, "+1");
synth.triggerAttackRelease("C5", 0.5, "+2");
// wait for the notes to end and stop the recording
setTimeout(async () => {
// the recorded audio is returned as a blob
const recording = await recorder.stop();
// download the recording by creating an anchor element and blob url
const url = URL.createObjectURL(recording);
const anchor = document.createElement("a");
anchor.download = "recording.webm";
anchor.href = url;
anchor.click();
}, 4000);
The number of seconds of 1 processing block (128 samples)
console.log(Tone.Destination.blockTime);
channelCount is the number of channels used when up-mixing and down-mixing connections to any inputs to the node. The default value is 2 except for specific nodes where its value is specially determined.
channelCountMode determines how channels will be counted when up-mixing and down-mixing connections to any inputs to the node. The default value is "max". This attribute has no effect for nodes with no inputs.
channelInterpretation determines how individual channels will be treated when up-mixing and down-mixing connections to any inputs to the node. The default value is "speakers".
The context belonging to the node.
Set this debug flag to log all events that happen in this class.
Indicates if the instance was disposed. 'Disposing' an instance means that all of the Web Audio nodes that were created for the instance are disconnected and freed for garbage collection.
The mime type is the format that the audio is encoded in. For Chrome that is typically webm encoded as "vorbis".
The number of inputs feeding into the AudioNode. For source nodes, this will be 0.
const node = new Tone.Gain();
console.log(node.numberOfInputs);
The number of outputs of the AudioNode.
const node = new Tone.Gain();
console.log(node.numberOfOutputs);
The duration in seconds of one sample.
console.log(Tone.Transport.sampleTime);
Get the playback state of the Recorder, either "started", "stopped" or "paused"
Test if your platform supports the Media Recorder API. If it's not available, try installing this (polyfill)[https://www.npmjs.com/package/audio-recorder-polyfill].
The version number semver
Connect the output of this node to the rest of the nodes in series.
const player = new Tone.Player("https://tonejs.github.io/examples/audio/FWDL.mp3");
player.autostart = true;
const filter = new Tone.AutoFilter(4).start();
const distortion = new Tone.Distortion(0.5);
// connect the player to the filter, distortion and then to the master output
player.chain(filter, distortion, Tone.Destination);
connect the output of a ToneAudioNode to an AudioParam, AudioNode, or ToneAudioNode
The output to connect from
The input to connect to
disconnect the output
connect the output of this node to the rest of the nodes in parallel.
const player = new Tone.Player("https://tonejs.github.io/examples/audio/FWDL.mp3");
player.autostart = true;
const pitchShift = new Tone.PitchShift(4).toDestination();
const filter = new Tone.Filter("G5").toDestination();
// connect a node to the pitch shift and filter in parallel
player.fan(pitchShift, filter);
Get the object's attributes.
const osc = new Tone.Oscillator();
console.log(osc.get());
Returns all of the default options belonging to the class.
Return the current time of the Context clock without any lookAhead.
setInterval(() => {
console.log(Tone.immediate());
}, 100);
Return the current time of the Context clock plus the lookAhead.
setInterval(() => {
console.log(Tone.now());
}, 100);
Set multiple properties at once with an object.
const filter = new Tone.Filter();
// set values using an object
filter.set({
frequency: 300,
type: "highpass"
});
Start the Recorder. Returns a promise which resolves when the recorder has started.
Stop the recorder. Returns a promise with the recorded content until this point encoded as mimeType
Connect the output to the context's destination node.
const osc = new Tone.Oscillator("C2").start();
osc.toDestination();
Convert the input to a frequency number
const gain = new Tone.Gain();
console.log(gain.toFrequency("4n"));
Connect the output to the context's destination node. See toDestination
Convert the incoming time to seconds
const gain = new Tone.Gain();
console.log(gain.toSeconds("4n"));
Convert the class to a string
const osc = new Tone.Oscillator();
console.log(osc.toString());
Convert the input time into ticks
const gain = new Tone.Gain();
console.log(gain.toTicks("4n"));