ilterNode getFilter]()</h3>
		<p>
		返回 [page:Audio.filters filters] 数组的第一个元素.
		</p>

		<h3>[method:Array getFilters]()</h3>
		<p>
		返回[page:Audio.filters filters] 数组.
		</p>

		<h3>[method:Boolean getLoop]()</h3>
		<p>
		返回[link:https://developer.mozilla.org/en-US/docs/Web/API/AudioBufferSourceNode/loop source.loop]
		 (是否循环播放)的值.
		</p>

		<h3>[method:GainNode getOutput]()</h3>
		<p>
		返回[page:Audio.gain gainNode].
		</p>

		<h3>[method:Float getPlayback