void notte (float pitch, float vel){
    pitch = constrain (pitch, 0, 127);
    vel = constrain (vel, 0, 127);
    output.sendNoteOn (chan, int(pitch), int(vel));                             // manda noteOn en canal 1
  }
  
  void off (float pitch){
    pitch = constrain (pitch, 0, 127);
    output.sendNoteOn (chan, int(pitch), 0);                                    // manda noteOff en canal 1
  }
  
  void cc (float controller, float value){    
    controller = constrain (controller, 0, 127);
    value = constrain (value, 0, 127);
    output.sendController (chan, int (controller), int (value));                // manda control change en canal 1 (0-127) (0-127)
  }
  
  void patch (float value){    
    value = constrain (value, 0, 127);                                       // manda program change en canal 1 (0-127)
    output.sendProgramChange (int (value), 0);                               // (nótese que hay un bug en la librería)
  }
  
  void bend (float value){    
    value = constrain (value, 0, 16383);
    int [] data = new int [2];
    data [0] = int (value/128); data [1] = int (value) % 128;
    output.sendPitchBend (chan, data[1], data[0]);                              // manda pitchbend en canal 1 (0-16383) [rwmidi fixed by Pablo Gindel]
  }