Class AMSynth

AMSynth uses the output of one Tone.Synth to modulate the amplitude of another Tone.Synth. The harmonicity (the ratio between the two signals) affects the timbre of the output signal greatly. Read more about Amplitude Modulation Synthesis on SoundOnSound.

Example

const synth = new Tone.AMSynth().toDestination();
synth.triggerAttackRelease("C4", "4n");

Hierarchy

Constructors

constructor

Properties

context debug detune envelope frequency harmonicity input modulation modulationEnvelope name onsilence oscillator output portamento volume version

Accessors

blockTime channelCount channelCountMode channelInterpretation disposed numberOfInputs numberOfOutputs sampleTime

Methods

chain connect disconnect dispose fan get getLevelAtTime immediate now set setNote 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.

Readonly detune

detune: Signal<"cents">

The detune in cents

Readonly envelope

envelope: AmplitudeEnvelope

The carrier's envelope

Readonly frequency

frequency: Signal<"frequency">

The frequency control

Readonly harmonicity

harmonicity: Multiply<"number">

Harmonicity is the ratio between the two voices. A harmonicity of 1 is no change. Harmonicity = 2 means a change of an octave.

Example

const amSynth = new Tone.AMSynth().toDestination();
// pitch the modulator an octave below oscillator
amSynth.harmonicity.value = 0.5;
amSynth.triggerAttackRelease("C5", "4n");

input

input: undefined

The instrument only has an output

Readonly modulation

modulation: OmniOscillator<any>

The modulator's oscillator which is applied to the amplitude of the oscillator

Readonly modulationEnvelope

modulationEnvelope: AmplitudeEnvelope

The modulator's envelope

Readonly name

name: string = "AMSynth"

onsilence

onsilence: onSilenceCallback

Invoked when the release has finished and the output is silent.

Readonly oscillator

oscillator: OmniOscillator<any>

The carrier's oscillator

output

output: OutputNode

portamento

portamento: number

The glide time between notes.

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

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

  • get(): ModulationSynthOptions

  • Get the object's attributes.

    Returns ModulationSynthOptions

    Example

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

getLevelAtTime

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);

set

  • set(props): this

  • Set multiple properties at once with an object.

    Parameters

    • props: RecursivePartial<ModulationSynthOptions>

    Returns this

    Example

    const filter = new Tone.Filter().toDestination();
    // set values using an object
    filter.set({
        frequency: "C6",
        type: "highpass"
    });
    const player = new Tone.Player("https://tonejs.github.io/audio/berklee/Analogsynth_octaves_highmid.mp3").connect(filter);
    player.autostart = true;

setNote

  • setNote(note, time?): this

  • Set the note at the given time. If no time is given, the note will set immediately.

    Parameters

    Returns this

    Example

    const synth = new Tone.Synth().toDestination();
    synth.triggerAttack("C4");
    // change to F#6 in one quarter note from now.
    synth.setNote("F#6", "+4n");

sync

  • sync(): this

  • Sync the instrument to the Transport. All subsequent calls of triggerAttack and triggerRelease will be scheduled along the transport.

    Returns this

    Example

    const fmSynth = new Tone.FMSynth().toDestination();
    fmSynth.volume.value = -6;
    fmSynth.sync();
    // schedule 3 notes when the transport first starts
    fmSynth.triggerAttackRelease("C4", "8n", 0);
    fmSynth.triggerAttackRelease("E4", "8n", "8n");
    fmSynth.triggerAttackRelease("G4", "8n", "4n");
    // start the transport to hear the notes
    Tone.Transport.start();

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(note, time?, velocity?): this

  • Trigger the attack of the note optionally with a given velocity.

    Parameters

    • note: Unit.Frequency | FrequencyClass<number>

      The note to trigger.

    • Optional time: Unit.Time

      When the note should start.

    • velocity: number = 1

      The velocity determines how "loud" the note will be.

    Returns this

    Example

    const synth = new Tone.Synth().toDestination();
    // trigger the note a half second from now at half velocity
    synth.triggerAttack("C4", "+0.5", 0.5);

triggerAttackRelease

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

  • Trigger the attack and then the release after the duration.

    Parameters

    • note: Unit.Frequency

      The note to trigger.

    • duration: Unit.Time

      How long the note should be held for before triggering the release. This value must be greater than 0.

    • Optional time: Unit.Time

      When the note should be triggered.

    • Optional velocity: number

      The velocity the note should be triggered at.

    Returns this

    Example

    const synth = new Tone.Synth().toDestination();
    // trigger "C4" for the duration of an 8th note
    synth.triggerAttackRelease("C4", "8n");

triggerRelease

  • triggerRelease(time?): this

  • Trigger the release portion of the envelope.

    Parameters

    • Optional time: Unit.Time

      If no time is given, the release happens immediately.

    Returns this

    Example

    const synth = new Tone.Synth().toDestination();
    synth.triggerAttack("C4");
    // trigger the release a second from now
    synth.triggerRelease("+1");

unsync

Static getDefaults

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constructorcontextdebugdetuneenvelopefrequencyharmonicityinputmodulationmodulationEnvelopenameonsilenceoscillatoroutputportamentovolumeversionblockTimechannelCountchannelCountModechannelInterpretationdisposednumberOfInputsnumberOfOutputssampleTimechainconnectdisconnectdisposefangetgetLevelAtTimeimmediatenowsetsetNotesynctoDestinationtoFrequencytoMastertoSecondstoStringtoTickstriggerAttacktriggerAttackReleasetriggerReleaseunsyncgetDefaults