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three.js
огледало от https://github.com/mrdoob/three.js.git


			
				
					
						
						
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		<h1>[name]</h1>

		<p class="desc">
			Create a AudioAnalyser object, which uses an
			[link:https://developer.mozilla.org/en-US/docs/Web/API/AnalyserNode AnalyserNode] to analyse audio data.<br /><br />

			This uses the
			[link:https://developer.mozilla.org/en-US/docs/Web/API/Web_Audio_API Web Audio API].
		</p>

		<h2>Code Example</h2>
		<code>
			
		// create an AudioListener and add it to the camera
		const listener = new THREE.AudioListener();
		camera.add( listener );

		// create an Audio source
		const sound = new THREE.Audio( listener );

		// load a sound and set it as the Audio object's buffer
		const audioLoader = new THREE.AudioLoader();
		audioLoader.load( 'sounds/ambient.ogg', function( buffer ) {
			sound.setBuffer( buffer );
			sound.setLoop(true);
			sound.setVolume(0.5);
			sound.play();
		});

		// create an AudioAnalyser, passing in the sound and desired fftSize
		const analyser = new THREE.AudioAnalyser( sound, 32 );

		// get the average frequency of the sound
		const data = analyser.getAverageFrequency();
		
		</code>

		<h2>Examples</h2>

		<p>
			[example:webaudio_sandbox webaudio / sandbox ]<br />
			[example:webaudio_visualizer webaudio / visualizer ]
		</p>

		<h2>Constructor</h2>

		<h3>[name]( audio, [link:https://developer.mozilla.org/en-US/docs/Web/API/AnalyserNode/fftSize fftSize] )</h3>
		<p>Create a new [page:AudioAnalyser AudioAnalyser].</p>

		<h2>Properties</h2>

		<h3>[property:AnalyserNode analyser]</h3>
		<p>
			An [link:https://developer.mozilla.org/en-US/docs/Web/API/AnalyserNode AnalyserNode] used to analyze audio.
		</p>

		<h3>[property:Integer fftSize]</h3>
		<p>
			A non-zero power of two up to 2048, representing the size of the FFT (Fast
			Fourier Transform) to be used to determine the frequency domain. See
			[link:https://developer.mozilla.org/en-US/docs/Web/API/AnalyserNode/fftSize this page] for details.
		</p>

		<h3>[property:Uint8Array data]</h3>
		<p>
			A Uint8Array with size determined by
			[link:https://developer.mozilla.org/en-US/docs/Web/API/AnalyserNode/frequencyBinCount analyser.frequencyBinCount] used to hold analysis data.
		</p>

		<h2>Methods</h2>

		<h3>[method:Uint8Array getFrequencyData]()</h3>
		<p>
			Uses the Web Audio's
			[link:https://developer.mozilla.org/en-US/docs/Web/API/AnalyserNode/getByteFrequencyData getByteFrequencyData] method. See that page.
		</p>

		<h3>[method:Number getAverageFrequency]()</h3>
		<p>
			Get the average of the frequencies returned by the
			[page:AudioAnalyser.getFrequencyData getFrequencyData] method.
		</p>

		<h2>Source</h2>

		<p>
			[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]
		</p>
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