@Alex Rogers A highpass filter will make the analysis easier and effortless. I can focus on only a limited range eliminating noice. I was considering to use both the standard firmware for anurans and custom firmware on bats. (Note: I use BatSound Standard - Sound Analysis Version 3.31 for call analysis)

@Alex Rogers thank you! i am eager to explore the custom firmware.

Hi! I am from Osmania University, working on bats of Central and Western India, I wanted to know that can i select the range of recording to a specific frequency? like if i want to record only between 16kHz to 60kHz where i can get specific Vespertilionidae and Emballonuridae calls?