# Background

Python GCC-PHAT works for me really well in a quiet environment. However, in a noisy environment, the results are no good. I want to locate a source of the sound of a known frequency range between x and y in a noisy environment.

# The question

How can GCC-PHAT work on specific frequencies?

# What I tried

In the gcc_phat I zeroed-out all but the frequencies between x and y. However, this zeroed out the tau result of gcc_phat function.