void FeedbackManager::playNoteOffEvent(NoteOffEvent event) {
    switch (state) {
    case OFF:
        break;
    case ECHO:
        eatChannelEvent(event);
        break;
    case REPING:
        emit gotNoteOnEvent(NoteOnEvent(event.getTime(), event.getChannel(), event.getNote(), 128));
        events.enqueue(event);
        timer->start(PINGDELAY);
        break;
    case TUNNEL:
        break;
    case PINGPONG:
        emit gotNoteOnEvent(NoteOnEvent(0, 0, 127, 127));
        emit gotNoteOffEvent(NoteOffEvent(0, 0, 127, 0));
        break;
    }
}