Lag = function(audiolet, value, lagTime) {
    AudioletNode.call(this, audiolet, 2, 1);
    this.value = new AudioletParameter(this, 0, value || 0);
    this.lag = new AudioletParameter(this, 1, lagTime || 1);
    this.lastValue = 0;

    this.log001 = Math.log(0.001);
}
Exponential lag for smoothing signals.

**Inputs**

- Value
- Lag time

**Outputs**

- Lagged value

**Parameters**

- value The value to lag.  Linked to input 0.
- lag The 60dB lag time. Linked to input 1.

@constructor
@extends AudioletNode
@param {Audiolet} audiolet The audiolet object.
@param {Number} [value=0] The initial value.
@param {Number} [lagTime=1] The initial lag time.