Class PolySynth<Voice>

PolySynth handles voice creation and allocation for any instruments passed in as the second parameter. PolySynth is not a synthesizer by itself, it merely manages voices of one of the other types of synths, allowing any of the monophonic synthesizers to be polyphonic.

Example

const synth = new Tone.PolySynth().toDestination();
// set the attributes across all the voices using 'set'
synth.set({ detune: -1200 });
// play a chord
synth.triggerAttackRelease(["C4", "E4", "A4"], 1);

Type Parameters

  • Voice extends Monophonic<any> = Synth

Hierarchy

  • Instrument<VoiceOptions<Voice>>
    • PolySynth

Constructors

constructor

Properties

context debug input maxPolyphony name output volume version

Accessors

activeVoices blockTime channelCount channelCountMode channelInterpretation disposed numberOfInputs numberOfOutputs sampleTime

Methods

chain connect disconnect dispose fan get immediate now releaseAll set sync toDestination toFrequency toMaster toSeconds toString toTicks triggerAttack triggerAttackRelease triggerRelease unsync getDefaults

Constructors

constructor

Properties

Readonly context

context: BaseContext

The context belonging to the node.

debug

debug: boolean = false

Set this debug flag to log all events that happen in this class.

input

input: undefined

The instrument only has an output

maxPolyphony

maxPolyphony: number

The polyphony limit.

Readonly name

name: string = "PolySynth"

output

output: OutputNode

volume

volume: Param<"decibels">

The volume of the output in decibels.

Example

const amSynth = new Tone.AMSynth().toDestination();
amSynth.volume.value = -6;
amSynth.triggerAttackRelease("G#3", 0.2);

Static version

version: string = version

The version number semver

Accessors

activeVoices

blockTime

  • get blockTime(): number

  • The number of seconds of 1 processing block (128 samples)

    Returns number

    Example

    console.log(Tone.Destination.blockTime);

channelCount

  • get channelCount(): number

  • 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.

    Returns number

  • set channelCount(channelCount): void

  • Parameters

    • channelCount: number

    Returns void

channelCountMode

  • get channelCountMode(): ChannelCountMode

  • 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.

    • "max" - computedNumberOfChannels is the maximum of the number of channels of all connections to an input. In this mode channelCount is ignored.
    • "clamped-max" - computedNumberOfChannels is determined as for "max" and then clamped to a maximum value of the given channelCount.
    • "explicit" - computedNumberOfChannels is the exact value as specified by the channelCount.

    Returns ChannelCountMode

  • set channelCountMode(channelCountMode): void

  • Parameters

    • channelCountMode: ChannelCountMode

    Returns void

channelInterpretation

  • get channelInterpretation(): ChannelInterpretation

  • 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".

    Returns ChannelInterpretation

  • set channelInterpretation(channelInterpretation): void

  • Parameters

    • channelInterpretation: ChannelInterpretation

    Returns void

disposed

  • get disposed(): boolean

  • 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.

    Returns boolean

numberOfInputs

  • get numberOfInputs(): number

  • The number of inputs feeding into the AudioNode. For source nodes, this will be 0.

    Returns number

    Example

    const node = new Tone.Gain();
    console.log(node.numberOfInputs);

numberOfOutputs

  • get numberOfOutputs(): number

  • The number of outputs of the AudioNode.

    Returns number

    Example

    const node = new Tone.Gain();
    console.log(node.numberOfOutputs);

sampleTime

Methods

chain

  • chain(...nodes): this

  • Connect the output of this node to the rest of the nodes in series.

    Parameters

    Returns this

    Example

    const player = new Tone.Player("https://tonejs.github.io/audio/drum-samples/handdrum-loop.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

  • connect(destination, outputNum?, inputNum?): this

  • connect the output of a ToneAudioNode to an AudioParam, AudioNode, or ToneAudioNode

    Parameters

    • destination: InputNode

      The output to connect to

    • outputNum: number = 0

      The output to connect from

    • inputNum: number = 0

      The input to connect to

    Returns this

disconnect

  • disconnect(destination?, outputNum?, inputNum?): this

  • disconnect the output

    Parameters

    • Optional destination: InputNode
    • outputNum: number = 0
    • inputNum: number = 0

    Returns this

dispose

fan

  • fan(...nodes): this

  • connect the output of this node to the rest of the nodes in parallel.

    Parameters

    Returns this

    Example

    const player = new Tone.Player("https://tonejs.github.io/audio/drum-samples/conga-rhythm.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

immediate

  • immediate(): number

  • Return the current time of the Context clock without any lookAhead.

    Returns number

    Example

    setInterval(() => {
        console.log(Tone.immediate());
    }, 100);

now

  • now(): number

  • Return the current time of the Context clock plus the lookAhead.

    Returns number

    Example

    setInterval(() => {
        console.log(Tone.now());
    }, 100);

releaseAll

  • releaseAll(time?): this

  • Trigger the release portion of all the currently active voices immediately. Useful for silencing the synth.

    Parameters

    Returns this

set

  • set(options): this

  • Set a member/attribute of the voices

    Parameters

    • options: RecursivePartial<VoiceOptions<Voice>>

    Returns this

    Example

    const poly = new Tone.PolySynth().toDestination();
    // set all of the voices using an options object for the synth type
    poly.set({
        envelope: {
            attack: 0.25
        }
    });
    poly.triggerAttackRelease("Bb3", 0.2);

sync

toDestination

  • toDestination(): this

  • Connect the output to the context's destination node.

    Returns this

    Example

    const osc = new Tone.Oscillator("C2").start();
    osc.toDestination();

toFrequency

  • toFrequency(freq): number

  • Convert the input to a frequency number

    Parameters

    Returns number

    Example

    const gain = new Tone.Gain();
    console.log(gain.toFrequency("4n"));

toMaster

toSeconds

  • toSeconds(time?): number

  • Convert the incoming time to seconds. This is calculated against the current TransportClass bpm

    Parameters

    Returns number

    Example

    const gain = new Tone.Gain();
    setInterval(() => console.log(gain.toSeconds("4n")), 100);
    // ramp the tempo to 60 bpm over 30 seconds
    Tone.getTransport().bpm.rampTo(60, 30);

toString

  • toString(): string

  • Convert the class to a string

    Returns string

    Example

    const osc = new Tone.Oscillator();
    console.log(osc.toString());

toTicks

  • toTicks(time?): number

  • Convert the input time into ticks

    Parameters

    Returns number

    Example

    const gain = new Tone.Gain();
    console.log(gain.toTicks("4n"));

triggerAttack

  • triggerAttack(notes, time?, velocity?): this

  • Trigger the attack portion of the note

    Parameters

    • notes: Unit.Frequency | Unit.Frequency[]

      The notes to play. Accepts a single Frequency or an array of frequencies.

    • Optional time: Unit.Time

      The start time of the note.

    • Optional velocity: number

      The velocity of the note.

    Returns this

    Example

    const synth = new Tone.PolySynth(Tone.FMSynth).toDestination();
    // trigger a chord immediately with a velocity of 0.2
    synth.triggerAttack(["Ab3", "C4", "F5"], Tone.now(), 0.2);

triggerAttackRelease

  • triggerAttackRelease(notes, duration, time?, velocity?): this

  • Trigger the attack and release after the specified duration

    Parameters

    • notes: Unit.Frequency | Unit.Frequency[]

      The notes to play. Accepts a single Frequency or an array of frequencies.

    • duration: Unit.Time | Unit.Time[]

      the duration of the note

    • Optional time: Unit.Time

      if no time is given, defaults to now

    • Optional velocity: number

      the velocity of the attack (0-1)

    Returns this

    Example

    const poly = new Tone.PolySynth(Tone.AMSynth).toDestination();
    // can pass in an array of durations as well
    poly.triggerAttackRelease(["Eb3", "G4", "Bb4", "D5"], [4, 3, 2, 1]);

triggerRelease

  • triggerRelease(notes, time?): this

  • Trigger the release of the note. Unlike monophonic instruments, a note (or array of notes) needs to be passed in as the first argument.

    Parameters

    • notes: Unit.Frequency | Unit.Frequency[]

      The notes to play. Accepts a single Frequency or an array of frequencies.

    • Optional time: Unit.Time

      When the release will be triggered.

    Returns this

    Example

    const poly = new Tone.PolySynth(Tone.AMSynth).toDestination();
    poly.triggerAttack(["Ab3", "C4", "F5"]);
    // trigger the release of the given notes.
    poly.triggerRelease(["Ab3", "C4"], "+1");
    poly.triggerRelease("F5", "+3");

unsync

Static getDefaults

Settings

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constructorcontextdebuginputmaxPolyphonynameoutputvolumeversionactiveVoicesblockTimechannelCountchannelCountModechannelInterpretationdisposednumberOfInputsnumberOfOutputssampleTimechainconnectdisconnectdisposefangetimmediatenowreleaseAllsetsynctoDestinationtoFrequencytoMastertoSecondstoStringtoTickstriggerAttacktriggerAttackReleasetriggerReleaseunsyncgetDefaults