Quiz 9 Flashcards
What parts of the ear relate to hearing?
cochlea, ear drum, organ of corti, anvil
What is the equation for the relationship between Sound Pressure Level (SPL) and Power (P)?
P = SPL^2
What is reverberant sound?
The collection of all reflected sounds in a space
What is the reverberation time for a concert hall?
2 seconds
What is the reverberation time?
the time taken for the level of a sound to fall by 60dB
How is the sound changed in speaker stacks in large venues?
the sound is delayed because electrical signals travel along cables much faster than sound travels through air
What can be used to modify the acoustic properties of a space?
reflectors, diffusers, absorbers
Why are flat, large surfaces common in concert halls?
they reflect sound
What does an increase of 6dB mean, in terms of the power increase?
a factor of 4
What is the range of human hearing?
20 Hz - 20 kHz
