{
  "source": "JSON",
  "data": "BLOCK",
  "version": "0.0.1",
  "type": "midi2freq",
  "language": "javascript",
  "extension": "webaudio",
  "help": "midi to freq",
  "label": "Midi 2 Freq",
  "color": "250:250:0:150",
  "group": "MIDI",
  "codes": {
    "declaration": "\n// block_$id$ = $label$\nvar $port[frequency]$ = [];\n\nvar $port[midi_value]$ = function(value){\n    value = (value < 0) ? 0 : value;\n    value = (value >127) ? 127 : value;\n    var arg = ((parseFloat(value) - 69.0) / 12.0);\n    result =  Math.pow(2.0, arg) * 440.0;\n    for (var i = 0; i < $port[frequency]$.length ; i++){\n        $port[frequency]$[i](result);\n    }\n    return true;\n    };\n"
  },
  "properties": [],
  "ports": [
    {
      "type": "mosaicode_lib_javascript_webaudio.extensions.ports.float",
      "name": "midi_value",
      "conn_type": "Input",
      "label": "Midi Value"
    },
    {
      "type": "mosaicode_lib_javascript_webaudio.extensions.ports.float",
      "label": "Frequency",
      "conn_type": "Output",
      "name": "frequency"
    }
  ]
}