I've been interested in using Linear Predictive Coding for a good while. Having had a few problems compiling some of the older examples from the CSound Book, I discovered that quite a bit has changed with the lpc opcodes along with adsyn opcodes as well. While my .lpa analysis files seem to work okay in some cases (cool and interesting results but for 'predictive coding' its pretty damn unpredicatable ;)) I took an interest in the 'lpinterp' opcode with the related 'lpslot' opcode only to be unsuccessful in working it.
Heres what I get trying to use a normal .lpa file...
INIT ERROR in instr 1: lpinterpol works only with poles files..
Fair enough, yet how do I go about making them? I know you can make .SDIR files with the hetro utility as far as I understand but what utility makes these .pol files?
If anyone could shed light on this I'd be very grateful :)