[填空题]
Your auditory system can accommodate.ac5cis 3 bv-g a huge s,* j0ttp4 aon f 8jimvzm4w0;range of sound levels. What is the ratio of highest to lowest ii, p n;mjma 04ts8zj0vf wo4t*ntensity at
(a) 100 Hz,$ \times10^{ a }$ a =
(b) 5000 Hz? $ \times10^{ a }$ a =
(See Fig. 12–6.)