Harmonies and Near Harmonies

I was having more fun today reading about harmonic ratios, harmonographs, and combining signals that are nearly harmonic but not quite. I recorded this video (sorry about the light static in the audio). In GnuRadio, I am generating two audio tones and feeding them into a scope block in XY mode, while adjusting the second frequency. Slightly discordant frequencies generate a “beat” from the drift in and out of phase with the first signal.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s