Loudness evaluation may be unchanged by obscuring the sound’s source identity

Evidence

To get some information, whether loudness evaluation is influenced by the information about the sound source, the loudness of the sounds listed in Table 16.3 was rated by magnitude estimation with anchor sound. Original sounds as well as sounds processed according to the procedure outlined in Fig. 16.16 were assessed. As anchor sound, the (original) sound of a hair dryer (sound 5) was chosen. — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 1858