Visualising output from my microphone

E

Ethan25

Junior Member level 2
Joined
Dec 17, 2023
Messages
24
Helped
0
Reputation
0
Reaction score
0
Trophy points
1
Activity points
208
Hi is there any way that I can directly observe the signal variation of my earphone's microphone ? I tried to connect my probes onto the 3.5mm jack's mic and ground and hardly observed any variation (there were very small variations in mV's but Ig that was just noise).
 

Sort by date Sort by votes
barry said:
when you say connected probes, I assume you meant oscilloscope probes?
Click to expand...
Yes

and yeah microphone's output is in mV's range but when I talk into the microphone I was not able to see any changes in my DSO.

I was under the assumption that I would be able to view the frequency output and its corresponding amplitude, was I wrong > ? or is there a better way to do this ?
--- Updated ---

D.A.(Tony)Stewart said:
Yes there is a way
but it depends on the datasheet and interface.
Click to expand...
I dont have any datasheets, its just an earphone with 3.5mm jack which you get in amazon.
 

Upvote 0 Downvote
Bet it's an electret microphone and gives no output without DC bias voltage applied through a resistor.
 

Upvote 0 Downvote
You must log in or register to reply here.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…