myAudioStream
.pipe(Render(function (canvas) {
	var data = this.getFloatTimeDomainData();
	//draw volume, spectrum, spectrogram, waveform — any data you need
}))
.pipe(Speaker());

var Generator = require('audio-generator');
var Speaker = require('audio-speaker');
var RenderStream = require('audio-render');
var isBrowser = require('is-browser');
//create rendering stream from passed options
var renderer = RenderStream({
	//custom rendering function, can be passed instead of options
	render: function (canvas) {
		//see audio-analyser for API
		var fdata = this.getFrequencyData();
		var waveform = this.getTimeData(size);
		//or use web-audio-api AnalyserNode methods here
		this.getFloatFrequencyData(new Float32Array(self.frequencyBinCount));
		this.getFloatTimeDomainData(new Float32Array(self.fftSize));
	},
	//channel number to render, 0 - L, 1 - R, ...
	channel: 0,
	//FPS (node only)
	framesPerSecond: 20,
	//max amount of data to store, number of samples
	bufferSize: 44100,
	//custom canvas (optinal), if you need to render along with other renderer
	canvas: undefined,
	//Analysis options
	//Magnitude diapasone, in dB
	minDecibels: -100,
	maxDecibels: 0,
	// Number of points to grab for fft
	fftSize: 1024,
	// Number of points to plot for fft
	frequencyBinCount: 1024/2,
	// Smoothing, or the priority of the old data over the new data
	smoothingTimeConstant: 0.2
	//...any pcm format options, if required. See pcm-util below.
});
//Depending on the enviromnent, expose canvas
isBrowser && document.body.appendChild(renderer.canvas);
renderer.on('render', function (canvas, data) {
	process.stdout.write(canvas._canvas.frame());
});
//If renderer is not piped, it works as a sink, else - as pass-through
Generator().pipe(renderer).pipe(Speaker());