Musical program material flattens reflection threshold curves compared to speech

Evidence

It is useful to compare the shapes of the threshold contours determined by Barron (1971) who used an anechoic-chamber recording of Mozart’s Jupiter symphony, with those shown earlier for speech, both in anechoic listening conditions. Figure 6.10 shows such a comparison, and it is seen that curves obtained using the anechoically recorded Mozart excerpt are much flatter than those for speech, even without concert hall reverberation. — Toole, Floyd E, Sound reproduction- the acoustics and…, 637