Exam 2 Flashcards
Porus absorber
Foam - more energy is allowed to enter and transfer into heat energy
Panel
When a sound hits it it moves back and forth dissipating the sound.
Good bass absorber
Poly cylindrical
Reflective - helps with bass and and some with mid and high
How to isolate a studio from outside noise sources
Adding mass, adding airspace, absorption, adding absorption between partition, and mechanically decoupling studio spaces
Design goals
Flat frequency response
Uniform reverb time
Free from flutter echo or close reflections
Isolated from interfering sounds
Way to achieve design goals
Inititial time gap delay Live-end-dead-end Diffusion to control problem reflections Control of room modes Speaker placement and reflection free zone
Ear anatomy
Outer ear, middle ear, inner ear
Pinna
The part of the ear guiding audio
Ear canal
Hall running from end of Pinna to ear drum
Ear drum (tympanic membrane)
A part of the ear that vibrates from sound waves and transfers them to ossicles
Middle ear
Hammer, anvil, stirrup, tiny bones furthering the transfer of sound
Oval window
Covered passage way between middle and inner ear
Basilar membrane
Membrane which supports the corti which converts vibrates energy into electrical energy
Stereostilla
Small fibers containing actin filaments which selectively handle electrical energy of specific frequencies in the ear.
ITD - interaural time difference
Difference between left and right ear
