Re: [Discuss-gnuradio] iir_filter does not work with specified feedback taps?

2014-10-22 Thread Tom Rondeau
On Tue, Oct 21, 2014 at 8:08 PM, Alex Zhang wrote: > Hi All, > > Any guys who ever used IIR filters? I got problems as below: > > I want the IIR filter works as: > y[n] = 1.8*x[n] + 0.8*y[n-1] > Then I set the feed forward taps as [1.8], feeback taps as [0.8], just > like > self.iir_filter_xxx_0

[Discuss-gnuradio] iir_filter does not work with specified feedback taps?

2014-10-21 Thread Alex Zhang
Hi All, Any guys who ever used IIR filters? I got problems as below: I want the IIR filter works as: y[n] = 1.8*x[n] + 0.8*y[n-1] Then I set the feed forward taps as [1.8], feeback taps as [0.8], just like self.iir_filter_xxx_0 = filter.iir_filter_ffd(([1.8]), ([0.8]), True) But my testing resul