This is a linear filter that removes DC bias from a signal. Specifically, this is a one-pole highpass filter implementing the formula y[n] = x[n] - x[n-1] + coef * y[n-1]. The frequency response of this filter is dependent on the sample rate of the server and the calculation rate of the UGen.
| in | 
 The input signal.  | 
| coef | 
 Leak coefficient.  | 
| mul | 
 Output will be multiplied by this value.  | 
| add | 
 This value will be added to the output.  |