// see if we might have hit an overtone (set a limit of 10dB)
for (unsigned i = 6; i >= 1; --i) {
if (best_bin != best_bin / i &&
// see if we might have hit an overtone (set a limit of 10dB)
for (unsigned i = 6; i >= 1; --i) {
if (best_bin != best_bin / i &&