Go Down

Topic: Displaying audio levels on an LCD (Read 365 times) previous topic - next topic

0miker0

I need an audio tone level monitor that can display levels from -50db to 0. I have an op amp circuit  that I found that can take in my steady audio tone and convert it to a DC voltage that is displayed on an LCD. At 0db my LCD reads 620, at -15db I get 590, at -30db I get 112 and at -50db I get a value of 2.
If there at a way to use the log on the arduino to get a value of 0 for 0db, -10 for -10db then it would be much appreciated.


PaulS

Quote
If there at a way to use the log on the arduino to get a value of 0 for 0db, -10 for -10db then it would be much appreciated.

Use the log? Do you mean the log function?

0miker0

Yes, the log function. I suck at math so i'm searching now to see if something like this has been done before.

Go Up
 


Please enter a valid email to subscribe

Confirm your email address

We need to confirm your email address.
To complete the subscription, please click the link in the email we just sent you.

Thank you for subscribing!

Arduino
via Egeo 16
Torino, 10131
Italy