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    Interface SpeechSynthesisUtterance

    The SpeechSynthesisUtterance interface of the Web Speech API represents a speech request. It contains the content the speech service should read and information about how to read it (e.g., language, pitch and volume.)

    MDN Reference

    interface SpeechSynthesisUtterance {
        lang: string;
        onboundary:
            | ((this: SpeechSynthesisUtterance, ev: SpeechSynthesisEvent) => any)
            | null;
        onend:
            | ((this: SpeechSynthesisUtterance, ev: SpeechSynthesisEvent) => any)
            | null;
        onerror:
            | (
                (this: SpeechSynthesisUtterance, ev: SpeechSynthesisErrorEvent) => any
            )
            | null;
        onmark:
            | ((this: SpeechSynthesisUtterance, ev: SpeechSynthesisEvent) => any)
            | null;
        onpause:
            | ((this: SpeechSynthesisUtterance, ev: SpeechSynthesisEvent) => any)
            | null;
        onresume:
            | ((this: SpeechSynthesisUtterance, ev: SpeechSynthesisEvent) => any)
            | null;
        onstart:
            | ((this: SpeechSynthesisUtterance, ev: SpeechSynthesisEvent) => any)
            | null;
        pitch: number;
        rate: number;
        text: string;
        voice: SpeechSynthesisVoice | null;
        volume: number;
        addEventListener<K extends keyof SpeechSynthesisUtteranceEventMap>(
            type: K,
            listener: (
                this: SpeechSynthesisUtterance,
                ev: SpeechSynthesisUtteranceEventMap[K],
            ) => any,
            options?: boolean | AddEventListenerOptions,
        ): void;
        addEventListener(
            type: string,
            listener: EventListenerOrEventListenerObject,
            options?: boolean | AddEventListenerOptions,
        ): void;
        dispatchEvent(event: Event): boolean;
        removeEventListener<K extends keyof SpeechSynthesisUtteranceEventMap>(
            type: K,
            listener: (
                this: SpeechSynthesisUtterance,
                ev: SpeechSynthesisUtteranceEventMap[K],
            ) => any,
            options?: boolean | EventListenerOptions,
        ): void;
        removeEventListener(
            type: string,
            listener: EventListenerOrEventListenerObject,
            options?: boolean | EventListenerOptions,
        ): void;
    }

    Hierarchy (View Summary)

    Index

    Properties

    lang onboundary onend onerror onmark onpause onresume onstart pitch rate text voice volume

    Methods

    addEventListener dispatchEvent removeEventListener

    Properties

    lang: string

    The lang property of the SpeechSynthesisUtterance interface gets and sets the language of the utterance.

    MDN Reference

    onboundary:
        | ((this: SpeechSynthesisUtterance, ev: SpeechSynthesisEvent) => any)
        | null

    MDN Reference

    onend:
        | ((this: SpeechSynthesisUtterance, ev: SpeechSynthesisEvent) => any)
        | null

    MDN Reference

    onerror:
        | (
            (this: SpeechSynthesisUtterance, ev: SpeechSynthesisErrorEvent) => any
        )
        | null

    MDN Reference

    onmark:
        | ((this: SpeechSynthesisUtterance, ev: SpeechSynthesisEvent) => any)
        | null

    MDN Reference

    onpause:
        | ((this: SpeechSynthesisUtterance, ev: SpeechSynthesisEvent) => any)
        | null

    MDN Reference

    onresume:
        | ((this: SpeechSynthesisUtterance, ev: SpeechSynthesisEvent) => any)
        | null

    MDN Reference

    onstart:
        | ((this: SpeechSynthesisUtterance, ev: SpeechSynthesisEvent) => any)
        | null

    MDN Reference

    pitch: number

    The pitch property of the SpeechSynthesisUtterance interface gets and sets the pitch at which the utterance will be spoken at.

    MDN Reference

    rate: number

    The rate property of the SpeechSynthesisUtterance interface gets and sets the speed at which the utterance will be spoken at.

    MDN Reference

    text

    text: string

    The text property of the SpeechSynthesisUtterance interface gets and sets the text that will be synthesized when the utterance is spoken.

    MDN Reference

    voice: SpeechSynthesisVoice | null

    The voice property of the SpeechSynthesisUtterance interface gets and sets the voice that will be used to speak the utterance.

    MDN Reference

    volume: number

    The volume property of the SpeechSynthesisUtterance interface gets and sets the volume that the utterance will be spoken at.

    MDN Reference

    Methods

    • The dispatchEvent() method of the EventTarget sends an Event to the object, (synchronously) invoking the affected event listeners in the appropriate order. The normal event processing rules (including the capturing and optional bubbling phase) also apply to events dispatched manually with dispatchEvent().

      MDN Reference

      Parameters

      Returns boolean

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