Signal Processing community now has really set a good high standard of answer by now. Most important aspect i believe are
We have seen deep understanding of algorithms including all relevant mathematics behind things.
We have seen great insight from people to apply practical approaches
We have seen many people fill in thorough references for further understanding or to back their claims.
However, there is something of a distraction i see in the questions - which is when questions are rather focused on Matlab implementaiton. Many questions of the format -
"My matlab code in doing this is NOT working! Can someone fix it?"
This is a point i think we need to assert a greater discipline.
Matlab might be useful good tool, but not everyone is really into Matlab.
Even though many people pose as a coding issue in Matlab - i have seen quite a few people don't get result simply because their understanding is not consistent. So if you understand algorithms better
Matlab codes (specially copy pasted from other sites etc.) quite often are not clear enough to dig up. We are not here to solve actual matlab issues as opposed to
I think ultimately, this is a community that can help you learn signal processing better - and for that you should stick to signal processing language rather than jumping into matlab code! I think it might help if Matlab code as reference, but that should not be centered around the code musings.
If we don't be strict about this from the Beta itself, the live site will have a great noise.
Should we try to be strict about closing of the MATLAB ONLY Question?