davyzhu
Advanced Member level 1
Zeros in FIR filter
Hello all,
On the diagram, there are three types of Zeros:
1) Just on the unit circle ? what is it
2) inside the unit circle ?= attenuation band
3) outside the unit circle ?= bypass band
Am I right? And what are they for? And are they all the denser the better?
And for example, I have a FIR low-pass filter (bandwidth is 1000Hz), how can I get the bandwidth from the Zero/Pole Diagram?
Thanks,
davy
Hello all,
On the diagram, there are three types of Zeros:
1) Just on the unit circle ? what is it
2) inside the unit circle ?= attenuation band
3) outside the unit circle ?= bypass band
Am I right? And what are they for? And are they all the denser the better?
And for example, I have a FIR low-pass filter (bandwidth is 1000Hz), how can I get the bandwidth from the Zero/Pole Diagram?
Thanks,
davy