dst.js

SCScript(function($SC) {
  return $SC.I.r = $SC('play', $SC('new', $SC.Class('Task'), [$SC.SyncFunction(function() {
    var freq, indexDepth, indexRange, synthIndex, dur, repeat, next, count, countDown, offset, ratioa, ratiob, envs, env, range, outBus;
    return [
      function() {
        range = 60, outBus = 0;
        count = 0;
        countDown = 0;
        offset = 0;
        envs = [[0, 0.9], [0.01, 0.9], [0.1, 0.8], [0.8, 0.01]];
        repeat = $SC('fill', $SC.Class('Array'), [10, function() {
          return [$SC('midicps', $SC('round', $SC('rrand', range, [$SC('+', range, [24])]), [1])), 3, $SC('-', 2.1, [$SC('exprand', 0.1, [2.0])]), 0, 1, 1, 0, 0.9];
        }]);
        next = $SC('fill', $SC.Class('Array'), [10, function() {
          return $SC('choose', [3, 0.75, 0.5, 0.25, 0.125]);
        }]);
        freq = $SC('rrand', range, [$SC('*', range, [2])]);
        indexDepth = 1;
        return $SC('do', Infinity, [$SC.SyncFunction(function() {
          return [
            function() {
              $SC('if', $SC('<=', countDown, [0]), [function() {
                env = $SC('choose', envs);
                $SC('put', next, [$SC('%', count, [10]), $SC('choose', [3, 0.5, 0.25, 0.125, 0.125])]);
                return $SC('put', repeat, [$SC('%', count, [10]), [$SC('midicps', $SC('round', $SC('rrand', range, [$SC('+', range, [24])]), [1])), $SC('rrand', 0.1, [12.0]), $SC('-', 2.1, [$SC('exprand', 0.1, [2.0])]), outBus, $SC('rrand', 1, [12]), $SC('rrand', 1, [12]), $SC('at', env, [0]), $SC('at', env, [1])]]);
              }]);
              $SC('setn', $SC('new', $SC.Class('Synth'), ['crotale']), ['param', $SC('wrapAt', repeat, [count])]);
              $SC('wait', $SC('wrapAt', next, [count]));
            },
            function() {
              $SC('if', $SC('and', $SC('>', count, [10]), [$SC('<=', countDown, [0])]), [function() {
                offset = countDown = $SC('choose', [0, $SC('rand', 3), $SC('rand', 6)]);
                return count = $SC('-', count, [offset]);
              }]);
              count = $SC('+', count, [1]);
              return countDown = $SC('-', countDown, [1]);
            }
          ];
        }, [])]);
      }
    ];
  }, [])]));
});

src.scd

r = Task({
	var freq, indexDepth, indexRange, synthIndex, dur, repeat;
	var next, count, countDown, offset, ratioa, ratiob, envs, env;
	var range = 60, outBus = 0;
	count = 0; countDown = 0; offset = 0;
	envs = [[0, 0.9], [0.01, 0.9], [0.1, 0.8], [0.8, 0.01]];
	repeat = Array.fill(10, 
		{[rrand(range, range+24).round(1).midicps, 3, 
			2.1 - exprand(0.1, 2.0), 0, 1, 1, 0, 0.9]});
	next = Array.fill(10, {[3, 0.75, 0.5, 0.25, 0.125].choose});
	freq = rrand(range, range*2); // these two are just starting points
	indexDepth = 1;
	
	inf.do({
		if(countDown <= 0,
			{
			env = envs.choose;
			next.put(count%10, [3, 0.5, 0.25, 0.125, 0.125].choose); 
			repeat.put(count%10, [
				rrand(range, range + 24).round(1).midicps, 
				rrand(0.1, 12.0),
				2.1 - exprand(0.1, 2.0), outBus, rrand(1, 12),  
				rrand(1, 12), env.at(0), env.at(1)]);
			});
			
			Synth("crotale").setn(\param, repeat.wrapAt(count));
			next.wrapAt(count).wait;   
			if((count > 10).and(countDown <= 0), 
				{offset = countDown = [0, 3.rand, 6.rand].choose; 
				count = count - offset});
	count = count + 1;
	countDown = countDown - 1;
	});
}).play();