A Hopf Adaptive Oscillator Analog Circuit as a musical instrument

The utilization of a Hopf adaptive frequency oscillator as a musical instrument is explored. The analog circuit design of this nonlinear oscillator are presented, and the procedure to use it as a musical instrument is described. Although similar to other analog electronics instruments such as the theremin, the authors believe this is the first time that an adaptive oscillator has been implemented as a musical instrument. Ave Maria, D. 839-Bradley Chapman (https://musopen.org/music/1673-ave-ma...​), is used here as an example. The dataset contains four parts. 1) vocalAveMaria.mat is the time series data that was input to the adaptive frequency oscillator. 2) afoAveMaria.mat is the response of the y state of the adaptive frequency oscillator. 3) pianoAveMaria.mat is the time series data of the piano accompaniment. 4) Exp_remix_by_y.wav is the sound file of the adaptive oscillator \"singing\" the vocal track, and it is overlaid on top of the piano accompaniment.