Birch-san

#!/usr/bin/env bash

# dependencies:
# https://www.npmjs.com/package/chrome-web-store-item-property-cli
# https://stedolan.github.io/jq/
# curl

# Ascertain directory in which script lives; compatible with all UNIX
# Thanks to kenorb
# http://stackoverflow.com/a/17744637/5257399

Birch-san

function Pluck( ctx ) {
  this.sr = ctx.sampleRate;
  this.pro = ctx.createScriptProcessor( 512, 0, 1 );
  this.pro.connect( ctx.destination );
}

Pluck.prototype.play = function( freq ) {
  var N = Math.round( this.sr / freq ),
    impulse = this.sr / 1000,
    y = new Float32Array( N ),