Comparator

[BobF]

Hell gang,

I could really use some help from someone who knows code and could code me a simple stream comparator. What I need is this. Comparison of relative states of plus and minus inputs. If the in(+)is greater than in(-), the output is 1, if in(+) is less than in(-), the output is 0. Only two states 0 or 1. This does have to work with streams as I am comparing two waveforms and need a stream of 1's and 0's from the the two compared streams.
For those that know electronics, this is just a simple analog voltage comparator.

Well that's it. Hope someone can help. If so many thanks in advance.
Later then, BobF.....

[adamszabo]

If I understood correctly you have two inputs? Then this should do it:

Code: Select all

streamin in1;
streamin in2;
streamout out;

out = (in1 > in2) & 1;

If in1 is greater than in2 it outputs 1, otherwise 0

[tulamide]

Sadly I can't help with the code. But as I understand it, the absolute value is to be compared:

+0.6|-0.7

abs(0.7) > abs(0.6)

sign of the greater is negative, so output is 0


+0.6|-0.4

abs(0.6) > abs(0.4)

sign of the greater is positive, so output is 1

the abs function is pretty cpu heavy I've heard, so I don't know how to realize it with DSP.

[BobF]

Thanks, adamszabo and tulamide,

Sorry this is late. Just been busy like we all are.

Comments, tips, hits, suggestions, and so on are always very much appreciated.

Later then, BobF.....