Acoustic test prep Flashcards
What is a Staggered wall stud?
When the studs are staggered and don’t touch
Whats does HVAC stand for?
Heating Ventilation and Air Conditioning
Air flows through what feature of the A/C ventilation process?
Plenums
Whats the deal airflow in a studio
High Volume / Low Velocity
What is RT60
The time it takes for the initial level of volume to drop 60dB
A structure designed for overhead mounting
Cloud
A Banner
A Hanging baffle
Hangs vertically
Hangs hamburger style
Splaying a window
Taking off parallel possibilities
Windows at an angle
Average window splay angle
6 degrees
what are 2 reasons to float a floor
air space
structural noise / outside vibrations
What is a sound lock
2 doors in series creating a corridor and sound isolation
Noise Criterion
A number rating how quiet the room is
All ambient noise (level/frequency) at time of the test is recorded
Music Recording Facilities Criterion should be within
[NC 15-25]
A Diffuser is used to
Scatter sound
In terms of absorption coefficients the closer to 1 is more
Absorbtive
A soft porous material will generally have a
closer to 1 (AC) absorbtive coefficient
A tuned cavity designed to absorb a specific frequency
Helmholtz
Whats an anechoic chamber
A room that disolves all frequencies
Another word for floating or separating a room/space
De-coupling
Early reflections
Phase
Extremely durable and great for De-coupling
Neoprene
The point in a room where direct and reflective sound are perceived as the same loudness
Critical distance
Small reflective room first reflection hits you 40ms later
Fusion Zone
The three types of room modes are
and
How many walls
Axial mode- 2 walls
Tangential- 4walls
Oblique- 6 walls
A waveform with a short lambda
High freq
Critical distance
The point in a room where direct and reflected sound are perceived to be equal loudness.
