Subtract = function(audiolet, value) {
    AudioletNode.call(this, audiolet, 2, 1);
    this.linkNumberOfOutputChannels(0, 0);
    this.value = new AudioletParameter(this, 1, value || 0);
}
Subtract values

**Inputs**

- Audio 1
- Audio 2

**Outputs**

- Subtracted audio

**Parameters**

- value The value to subtract.  Linked to input 1.

@constructor
@extends AudioletNode
@param {Audiolet} audiolet The audiolet object.
@param {Number} [value=0] The initial value to subtract.