Dolphins emit sound bursts that range in frequency from 1 Hz to 120kHz. Say that a dolphin is using a sound burst consisting of thesefrequencies as a form of sonar (like the bat example). Let theburst last for a time interval of 10 ms, after which it listens for100 ms. Say that the logarithmic intensity (loudness) of thedolphinâs sound is 50 dB as measured at 1 m away. Dolphins can hearsounds that are 2 dB below our threshold of hearing.
a. How far ahead can the dolphin âseeâ using this approach?
b. What is the smallest object that the dolphin can âseeâ?
c. What is the largest object that the dolphin can âseeâ?
d. What would be the amplitude of the pressure wave at 20 m fromthe dolphin?
e. How far from the dolphin producing the sounds does anotherdolphin have to be before the sound intensity is below thethreshold of hearing for dolphins?
Dolphins emit sound bursts that range in frequency from 1 Hz to 120kHz. Say that a dolphin is using a sound burst consisting of thesefrequencies as a form of sonar (like the bat example). Let theburst last for a time interval of 10 ms, after which it listens for100 ms. Say that the logarithmic intensity (loudness) of thedolphinâs sound is 50 dB as measured at 1 m away. Dolphins can hearsounds that are 2 dB below our threshold of hearing.
a. How far ahead can the dolphin âseeâ using this approach?
b. What is the smallest object that the dolphin can âseeâ?
c. What is the largest object that the dolphin can âseeâ?
d. What would be the amplitude of the pressure wave at 20 m fromthe dolphin?
e. How far from the dolphin producing the sounds does anotherdolphin have to be before the sound intensity is below thethreshold of hearing for dolphins?
