For a first-time DTMF project, you could use Matlab to make a testable matlab solution. If your idea is simple enough, a Matlab solution might be all you need.
In my experience, students who struggle with mathematical truths often make complex programs in Matlab to prove that they know what they are talking about. However, a student who understands the subject, understands how to make a simple solution, and can prove he or she has knowledge of the subject, can very quickly get around such complexity.
First, I will explain how to do a Matlab problem. Then I will show you how to make a simple solution.
When you have made a Matlab solution, you have already made a working program. This is good. But what if you want to use the program? You could run it on your computer, but that is pretty much the worst thing you can do for someone who has never done DTMF Projects before.
The best way to proceed is to do an online tutorial with a Matlab tutorial. An online tutorial is much better than just reading Matlab code without an explanation. The difference is not much. However, it is subtle. A great tutorial should explain the right way to write a Matlab program, why Matlab solves problems differently from C++ and how to use Matlab to make a testable matlab solution.
There are several options for getting these online tutorials. You can look online, buy a book, or attend a seminar. I suggest going with a seminar, because it is easier to understand and can often be found in a classroom.
At a seminar, there is a group of students who have been taught Matlab. You are likely to learn more from someone who has experience using Matlab than someone who has never done DTMF Projects before. If you really want to learn Matlab, then go to a seminar.
It can be very hard to find these online seminars, so your best bet is to go to a bookstore and see if they carry books on topics related to DTMF Projects. Many of these books are written by experts. Some of them are also written by matlab experts who are teaching students.
Most Matlab manuals are written for beginners, so they will not be helpful to a student who has never used Matlab. You might be able to find a different book, but be prepared to spend quite a bit of time looking for it.
After you find a book that is helpful, you can always use online manuals. However, there are some people who do not like online manuals, because they feel that they waste time reading text and not doing something useful.
Using online manuals is very different from looking at a book. However, online manuals are a better option for a student who has never used Matlab before.