/**
* Set the alpha coefficient for the low-pass filter. y[n] = alpha*y[n-1] + (1-alpha)*x[n]. I.e.,
* values near one represent low-pass filters with greater effect. The nominal sample rate is
* 500Hz.
*
* @param alpha [0,1].
*/
public void setLPF(double alpha) {
assert (alpha >= 0 && alpha <= 1.0);
int v = (int) (alpha * 65536);
orc.doCommand(
0x3000, new byte[] {(byte) port, (byte) ((v >> 8) & 0xff), (byte) ((v >> 0) & 0xff)});
}
