Designing a Pitch Sensor

[klow]

I have already created a prototype detecting noise, demonstrated through a light flickering when a noise is detected, but is there any way possible to add on to this project by adding a pitch sensor?

[Paul_KD7HB]

I have already created a prototype detecting noise, demonstrated through a light flickering when a noise is detected, but is there any way possible to add on to this project by adding a pitch sensor?

Have you searched the forum for frequency measuring?
Paul