ABSTRACT
Numerous composers and performers have been fascinated by radio transmissions. These signals either represent the local broadcast culture or, in the case of shortwave transmissions, a faraway place. They are topical and linear. Radio gives us a luxurious grab bag of samples with which to play. Modern radio receiver chips, like the Si4825, integrate in a single chip nearly all the necessary parts for a high-quality multiband radio receiver. The Si4825 needs a stable time base to be able to tune in radio stations. The low frequency oscillator switches rhythmically between the lowest frequency of the receiver and the frequency one dials in with the potentiometer. This makes it jump back and forth between static (0 volts) and the frequency selected with the potentiometer. Interfacing the sequencer works similarly to the Schmitt trigger oscillator array.
