Latest interference fringes

A project log for Standing waves of sound

An ultrasonic interferometer is assembled from optical drive components, 3d-printed parts and an ultrasonic range-finder.

Andrew FergusonAndrew Ferguson 02/23/2016 at 19:560 Comments

I just wanted to show some interference fringes using both the following:

1: The Si5351 as the oscillator - driving the ultrasound transmitter.

2: The single transistor amplifier (described in the previous log entry) amplifying the receiver signal, before envelope detection.

I think it is pretty awesome that these are interference fringes of sound and we are seeing up to about the 54th maxima.