Examples of de.maramuse.soundcomp.events.SeamlessTempoChangeEvent

de.maramuse.soundcomp.events.SeamlessTempoChangeEvent

less: this mode avoids to have a noticeable acceleration change. // that means, as well on start and on end, the acceleration approaches 0. // only in the middle beats there is a noticeable acceleration between beats. // the "tempo over beat" curve thus must resemble a sine/cosine from its lowest to highest point. // punctual tempo at a certain beat: starttempo + 0.5*(1-cos(pi*beat/beats))*(endtempo-starttempo) // or in other terms: 0.5*(startempo+endtempo)+0.5*cos(pi/beats*beat)*(starttempo-endtempo) // Since w, we'd need to integrate the inverse tempo over the beats to tell at which time a certain note is, // we need the integral // http://integrals.wolfram.com/index.jsp?expr=1%2F%28%28A%2BB%29%2F2+%2B+%28A-B%29%2F2*cos%28P*X%29%29&random=false // Integrate[1/((a + b)/2 + ((a - b)*Cos[p*x])/2), x] == (2*ArcTan[(Sqrt[b/a]*Tan[(p*x)/2]))/ (Sqrt[a*b]*p) // a is the start tempo, b is the end tempo // p is the factor PI/beats to adapt the number of beats to the first half period of the cosine.

  public void testTempoChangeCalculations() {
  TempoChangeEvent itce=new InverseTempoChangeEvent(10d);
  itce.setBeat(0);
  TempoChangeEvent etce=new ExponentialTempoChangeEvent(10d);
  etce.setBeat(0);
  TempoChangeEvent stce=new SeamlessTempoChangeEvent(10d);
  stce.setBeat(0);
  TempoChangeEvent htce=new HarmonicTempoChangeEvent(10d);
  htce.setBeat(0);
  TempoChangeEvent ltce=new LinearTempoChangeEvent(10d);
  ltce.setBeat(0);
  System.out.println("testing inverse tc accel");
  testTempoChange(itce, true);
  System.out.println("testing exponential tc accel");
  testTempoChange(etce, true);
  System.out.println("testing harmonic tc accel");
  testTempoChange(htce, true);
  System.out.println("testing seamless tc accel");
  testTempoChange(stce, true);
  System.out.println("testing linear tc accel");
  testTempoChange(ltce, true);
  itce=new InverseTempoChangeEvent(10d);
  itce.setBeat(0);
  etce=new ExponentialTempoChangeEvent(10d);
  etce.setBeat(0);
  stce=new SeamlessTempoChangeEvent(10d);
  stce.setBeat(0);
  htce=new HarmonicTempoChangeEvent(10d);
  htce.setBeat(0);
  System.out.println("testing inverse tc decel");
  testTempoChange(itce, false);
  System.out.println("testing exponential tc decel");

    break;
    case ACCELMODE_INVERSE:
    tce=new InverseTempoChangeEvent(tempTimestamp);
    break;
    case ACCELMODE_SEAMLESS:
    tce=new SeamlessTempoChangeEvent(tempTimestamp);
    break;
    case ACCELMODE_RETURN:
    tce=new ReturnToGlobalTiming(tempTimestamp);
    break;
    case ACCELMODE_LINEAR:

Examples of de.maramuse.soundcomp.events.SeamlessTempoChangeEvent

Related Classes of de.maramuse.soundcomp.events.SeamlessTempoChangeEvent