// synthesis
SinOsc foo => dac;

// variables for interp
float prevFreq;
float currFreq;

// time between new events/notes
500::ms => dur DURATION;
// number of steps for interp (try playing with this)
60 => int numSteps;

// main loop
while( true )
{
    // remember the previous
    currFreq => prevFreq;
    // generate and set current freq
    Math.random2( 12, 56 )*2 => Std.mtof => currFreq;
    
    // difference between two endpoints
    currFreq - prevFreq => float diff;
    // duration between interp steps
    DURATION / numSteps => dur RATE;
    // the amount to increment
    diff / numSteps => float increment;
    // set the starting point
    prevFreq => float theFreq;
    
    // assert the freq in steps
    for( int i; i < numSteps; i++ )
    {
        // compute the next intermediate freq
        theFreq + increment*i => foo.freq;
        // time step
        RATE => now;
    }
}