Quiz 13 Flashcards
The fundamental frequency of a sound wave is the ____ tone in the sound.
lowest
Sound waves are ____ waves
Longitudinal
What kinds of sound bend around objects easier?
low frequencies
How much time is one milli-second?
.001 second
A word that describes sound bending around objects is ____.
diffraction
When sound wave are allowed to reflect back on themselves, they create_____ waves.
standing
In addition to the fundamental frequency, most sounds contain other frequencies that are multiples of the fundamental frequency. These tones are called ______.
over tones and harmonics
The inverse square law reveals that sound pressure drops by ____ dB every time you double the distance from the sound source.
6 dB
A word that describes sound spreading out.
diffusion
Multiple sound reflections that are to close to be heard separately are collectively known as…
reverb
Diaphragmatic absorbers and Helmholtz resonators are both…
resonating absorbers
Absorption and diffusion can be maximized by using the _____ wavelength theory.
1/4 wavelength theory
Quadratic, Schroeder and skyline are all types of:
Diffusors
Which are more common. Resonating absorber or pours absorber?
porous absorbers
Sound absorption coefficient is a number between 0 and 1, with the measurement of 0 being….
Fully reflective, no absorption
The time between the direct sound and the first earliest reflection is called…
pre-delay
Reverb time is describe as how long it takes for a sound to decrease ___ dB below it’s original level.
60
Today, one can turn the acoustics of a room into an impulse file that can be loaded into ______ reverb system (or plug-in).
Convolution reverb system
Another word for Reverb Time is….
Decay time
When using “sends” to patch reverb, we will usually want it to be…
post-fader
The point in a room where the amount of direct sound pressure is equal to the reflected sound pressure is called…
critical distance
The equation that was developed in the late 1890’s that describes what we now call the reverb time is the…
sabine equation
Spring and Plate relate to….
Mechanical reverb systems
Reverb is usually added to a mix by using _______ patching.
side-chain
Most digital reverb devices include high-pass and low-pass adjustments
true
Adding acoustic foam like Auralex is best for…
absorption coefficient
What is meant by a “sound lock”
a small pass through room or space that separates two studio rooms by 2 doors
One of the best ways to improve the transmission loss of a wall is to layer 2 or 3 sheets of materials together. Like screwing 1 or 2 additional layers of sheetrock together. T or F
True
The most important thing below for stopping sound transmission is…
mass
The “V” in HVAC is for
Ventilation
Sound that is conducted through adjoining walls (or other objects) between adjacent rooms is called…
Flaking noise
Walls that zig-zag out and back in at non-90 degree angles are referred to as…
splayed
