Hello mmTsuchi.
Thank you for your help.
Sorry for my mistakes, but now I started programming in VHDL, so knowledge is not much.
The file "lab12_design_files," withdrew from the following link:
"
ftp://ftp.altera.com/up/pub/Altera_Material/11.0/Laboratory_Exercises/Digital_Logic/DE2-115/vhdl/"
I need to get the microphone sound and send it to a column, to apply a filter in the future. I have urgency to solve this problem, which seems basic, but can not solve.
Without solving this first part, I can not achieve the objective of the work is to apply an FFT filter.