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(@DK999)


Re: FIR Amplitude

Reply posted 7 years ago (12/15/2017)
THAT was the problem, thanks a lot! :)

Re: FIR Amplitude

Reply posted 7 years ago (12/13/2017)
Sorry, I thought that would be clear from my simulation and testbench.So I've made a compensator filter via an octave script, which gave me 33 coefficients for my...

FIR Amplitude

New thread started 7 years ago
Hi guys!I'm on to a new task and try to implement a FIR filter (transposed form) after a CIC as a compensation filter. So far, so good, the simulation runs fine...

Re: IIR in FPGA

Reply posted 7 years ago (12/12/2017)
So I've found the problem (I guess).I'm just shifting the input value by 2^12 to the left, calculate everything and divide by the same value afterwards. Seems to...

Re: IIR in FPGA

Reply posted 7 years ago (11/21/2017)
Ah yeah, I've swapped B0 and A0, my bad :DThe filter is totally stable in the simulation but it seems Quartus (13.1) doesn't like it, getting an Error I can't figure...

Re: IIR in FPGA

Reply posted 7 years ago (11/16/2017)
Wow, this is some amazing code right there :)I wrote a small testbench for your implementation, it seems to be OK with your coefficients but after inserting mine...

Re: IIR in FPGA

Reply posted 7 years ago (11/13/2017)
The Q-Format determines the multiplication factor of the coefficients, so that I divide by the same factor after multiplication/summation.The weird stuff is, that...

Re: IIR in FPGA

Reply posted 7 years ago (11/10/2017)
I have a working Octave script that show me my filtercurve. So you say I don't need any state machine in my design? I've done another comparison and as I can see,...

Re: IIR in FPGA

Reply posted 7 years ago (11/10/2017)
My goal is to make a universal IIR filter that fits high pass and low pass designs. As far as I know, the filter form shouldn't care about the kind of implementation,...

IIR in FPGA

New thread started 7 years ago
Hi guys!So far I've made two versions of the IIR, one is more async (IIR_Biquad_II.vhd) and one uses a state machine (IIR State). The more async one was derived...

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