dev: dspProcess naming rules

name from input rates

(unit) => {
  return unit.inputSpecs.map(spec => spec.rate == C.AUDIO_RATE ? "a" : spec.rate === C.AUDIO_SCALAR ? "i" : "k").join("");
};

name from number of outpus

(unit) => {
  return unit.outputs.length === 1 ? "1" : "k";
};

name from own rate

(unit) => {
  return unit.calcRate === C.AUDIO_RATE ? "a" : "k";
};