setPlaybackRate( value ) {

		if ( this.hasPlaybackControl === false ) {

			console.warn( 'THREE.Audio: this Audio has no playback control.' );
			return;

		}

		this.playbackRate = value;

		if ( this.isPlaying === true ) {

			this.source.playbackRate.setTargetAtTime( this.playbackRate, this.context.currentTime, 0.01 );

		}

		return this;

	}
Sets the playback rate.

Can only be used with compatible audio sources that allow playback control.

@param {number} [value] - The playback rate to set.
@return {Audio|undefined} A reference to this instance.