Difference tones between Yankee Doodle in F and a drone on C. F=8/5 (1/1), G=9/5 (9/8), A440=1/1 (5/4), C=6/5 (3/2). Top and bottom line without difference tones.
*1 step in 72 equal temperament on C. Equal-tempered: 21/72:1 = 16.67 cents. MIDI pitch bend: 43,69 Created in Sibelius with midi pitch bend on 69 for 15.625 cents rather than 16.667. New version a PU on 43,69 for 16.6748046875 cents.
I made this as a near ultrasonic sms signal. Created and edited with audacity, filtered with glame bandpass filter. If you hardly cut a pure tone, you introduce a whole lot of other frequencies to the signal at the cutting point. To avoid this after the cutting you need to filter the whole thing with a bandpass filter to ensure you have as little other frequency content as possible. It will audibly soften the start and the end of the sound. That's what i did here.
It's a sound that i created with a patch i made in pure-data (my first patch btw). Completely random frequencies in completely random space imaging. Merge with au "fm" sound where the index modulation change randomly, the carrier tone and the modular tone also change randomly. I applied a random delay. . . . So random random!.
This is the initial button push, the electronic squeal of energized circuitry and subsequent static of turning on a tv that is on a dead channel. A "swatch" culled from the back end of the sound can be looped for continuous static and electronic squeal. Made with fruity loops oscillators.
