The ear canal resonates like a tube closed at one end. (See Figure 17.37.) If ear canals range in length from 1.80 to 2.60 cm in an average population, what is the range of fundamental resonant frequencies? Take air temperature to be 37.0°C, which is the same as body temperature. How does this result correlate with the intensity versus frequency graph (Figure 17.35 of the human ear?

Transcribed Image Text:

Intensity I (dB) 120 100 80 60 40 20 0 -20 60 phon 40 phon 0 phon Conversational speech distribution I 62.5 125 250 500 1000 2000 Frequency f (Hz) 4000 8000 16000