bmcculla said:
Learner: I'm sure there are tools that do what you are asking. I think Simulink from Matlab will let you design filters in a more abstract method. The problem is that it takes a huge amount of computation.
Well, looking at the netlist of spice they could be short enough to implement a 4 pole filter and yes..... it is inavoidable for a huge amount of computation when it comes to DSP, that's just the way it is since there is no free lunch.......that's the cost for eliminating the hardware.
You could write some C code (or assembler) that implements a FIR filter on your microcontroller. You then calculate the coefficients on your PC and then download them to your microcontroller. You can implement all sorts of filters with an FIR.
Right, but the problem is knowing the concept of using FIR well enough in the first place to be able to apply it......... it requires a thorough understanding before you can utilizing it proficiently to customize a solution to accomodate any problem and that's where I am stuck :roll:
Still pulling my hair out trying to take it all in.....
Again, not try to be lazy but I am suprised that no one is selling preprogrammed FIR filters on EPROM like the good'ol monolithic filters?
Would be AWSOME to be able to buy them with motherboard and able to use it with the latest P4, just modularise your EPROM filter to suit your needs. Now that would be some powerful DSP!!!! as oppose to the pee wee pics and ucontrollers........
Sorry about the vent but I just don't understand why we are still dealing with such "primitive" CPUs when we already have P4 and left the age of 8085, commodore 64 and the likes.... :?
Sure they are useful for simple functions like control switches and keep time, generate LED patterns, sensors etc.... but when it comes down to computations I don't think these chips are powerfull enough with 8 bit bus...... It could probably accomodate and works as a single filter but when you want to do more than that, which often you would; you'll need like 3 ucontrollers just to make an audio state variable filter with seperate Q, frequency and amplitude adjustment........
I know I need a lot more work on my programming........ but often I find myself calculation the instruction to see if it will be fast enough to computate the data and instruction. :roll: