Based on the graph in Figure 17.34, what is the threshold of hearing in decibels for frequencies of 60, 400, 1000, 4000, and 15,000 Hz? Note that many AC electrical appliances produce 60 Hz, music is commonly 400 Hz, a reference frequency is 1000 Hz, your maximum sensitivity is near 4000 Hz, and many older TVs produce a 15,750 Hz whine.

Transcribed Image Text:

Sound level (dB) 120 100 80 60 40 20 0 -10 40 60 100 200 400 800 50 80 500 1000 Frequency f (Hz) 2000 ID 5000 10,000 4000 8000 120 phon 110 phon -100 phon 90 phon 80 phon -70 phon -60 phon -50 phon -40 phon -30 phon -20 phon 10 phon -0 phon