1 to 3.8 bits. On the ordinate is plotted the amount of 2 0 4 0 PITCHES i00-8000 CP5 3 n 5 INPUT INrORMAT ION 2 5 sirs no. 1. Data from Pollack (17, 18) on the amount of information that is transmitted by listeners who make absolute judgments of auditory pitch. As the amount of input in- for