Tagged Questions
-5
votes
2answers
104 views
Designing FIR filters [closed]
How can we realize a second order digital FIR filter without using a microcontroller. What assumptions would be taken?
0
votes
1answer
95 views
In designing a digital filter by impulse invariance method why is the scaling factor irrelevant?
I've come across a few examples that the scaling factor T in the eqn below can be arbitrarily chosen as unity. How is that possible? doesn't T have something to do with the Nyquist sampling rate?
...
2
votes
2answers
335 views
Detecting a 15KHz pulse with logic output
I want to build a simple and ultra low cost circuit that can detect a timed (let's say 200ms) pulse of a single sine frequency - say,15KHz. Amplitude will be around AC ~1Vp-p. Detection will give a ...
4
votes
6answers
737 views
IIR filter on a 16bit MCU (PIC24F)
Im trying to implement a simple first order IIR filter on a MCU (PIC24FJ32GA002), without success until now.
The filter is a DC tracking filter (low pass filter) whose purpose is to track DC component ...
3
votes
1answer
263 views
What are the practical implications of changing the rolloff factor of a root-raise cosine filter?
This is in regards to digital communications. I have a link I've set up using GNURadio that's sending BPSK modulated data through water via a LED. I can control the roll-off factor, $\beta$, of the ...
