-I Identify program name and version number.
-i item Select input item number.
-n numfilt Select number of filters >= 2. Default 16.
-o order Select filter order. Default low-pass and high-pass: 4, band-pass and band-stop: 4. Maximum is 20.
-r rate Output frame rate required. Energies are rectified then low-pass filtered at half this rate before sampling.
SP Any speech item
LX (optional) Any Lx item
SP Filtered speech
(null) (optional) filtered lx
numfilt= number of filters
order= order of filters
rate= output frame rate
1.0 Mark Huckvale