As a math and statistics, data analytics expert, I'm glad to see your project.
If you check my profile, you can see I have deep knowledge in math, optimization, data analytic, statistics, and numerical calMais
I am an [login to view URL] graduate and have good experience in signal processing both theoretical and practical. I have worked on DTMF as well and would like to now the proejct details.
Please DM me to discuss Mais