Question

hi guys make two question about sound​

Answer 1

Answer:

no irrelevant question please

by bro Sunny

Answer 2

Answer:

1. A man wants to roof his house and asks for estimates from 3 companies :A=35k, B=32k and C=23k. Which economic/financial analysis is Ok and how?
2. How can I find distance from 4 microphone array to a sound source?