final int update(Pattern pattern, int patternpos) {
patternpos = updateData(pattern, patternpos);
em.updateData(ud);
im.updateData(ud);
return patternpos;
}
final void play(int[] left, int[] right, int off, int len) {
im.play(left, right, off, len);
}
public final void updateTick() {
em.tick();
im.tick();
}