A simple implementation of a sine wave generator using the web-audio API

sine.js

function Sine(ctx) {
	this.sampleRate = ctx.sampleRate;
	this.processor = ctx.createScriptProcessor(512,0,1)
	this.processor.connect(ctx.destination);
	this.offset = 0;
}

Sine.prototype.play = function(freq) {
	this.processor.onaudioprocess = function(e) {
		var out = e.outputBuffer.getChannelData(0);
		var i=0;
		for(; i<out.length; ++i) {
			out[i] = Math.sin(2*Math.PI*freq*((this.offset+i)/this.sampleRate));
		}
		this.offset += i;
		if (this.offset > this.sampleRate)
			this.offset -= this.sampleRate;
	}.bind(this);
	
	this.playing = true;
  
}

nvm, works, thank you so much!