libiir

Author	SHA1	Message	Date
Laurence Withers	bc383a92da	iir_filter_copy(): don't copy uninitialised state If iir_filter_copy() was called on a filter which had no state, it would copy the uninitialised memory from that filter. Check for this.	2011-04-15 17:56:48 +00:00
Laurence Withers	9a87889dd3	Improve initial conditions Compute the DC gain of the filter (assuming 0 if unstable) and use that to set the initial conditions of a filter as follows: x(t<0)=x(0) y(t<0)=x(0) × dc_gain	2011-04-15 17:53:44 +00:00
Laurence Withers	2031d084cc	Bump version	2010-11-08 15:18:39 +00:00
Laurence Withers	ce36ca9ef5	Import initial work	2010-11-08 15:18:07 +00:00