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48 Cards in this Set

  • Front
  • Back
What are the three distinct forms of particle motion?
-Cylindrical Wave
-Transverse Wave
-Longitudinal Wave
How do you calculate the velocity of sound knowing the temperature?
C=49(square root) of 459.4+ degrees farenheit
How does temperature affect the velocity of sound?
Temperature goes up, speed of sound goes up/ temperature goes down, speed of sound goes down
What is wavelength?
the distance a wave travels to complete one cycle.
How can you reverse polarity?
swap pins 2 and 3 on a mic cable reverse banana plug at amp
Describe phase?
frequency dependant time delay
How do you calculate octave relationships?
2:1 ratio (doubling)
How do you calculate harmonics?
x-multiplier of the fundamental
How do you calculate a range of octaves?
2n= f high/f low
What are the main reasons for sound system measurement?
-maintenance
-legal
-artistic
What 5 basic test signals are used for sound system measurement?
-white noise
-pink noise
-shaped noise
-broadband pulse
-sinewaves
What is white noise?
equal energy per frequency
What is pink noise?
equal energy per octave
What are the 2 most common weighting curves used for SPL meters?
-A
-C
What dimension is a real time analyzer missing?
time
What is fourier transform?
a mathematical computation that converts amplitude vs. time into amplitude vs. frequency
What measurement systems use FFT's?
-SIM
-SMAART
What does TEF stand for?
Time Energy Frequency
What does MLS stand for?
Maximum Length Sequence
What is an electroic crossover point?
where the low and high output of the processor crosses over
What is an acoustic crossover point?
when both drivers are driven at the same amplitude
What is amplitude correction?
a boost in certain areas of the frequency to correct for inefficiencies of a speaker cabinet.
What is phase correction?
delayiing certain frequencies to allow all frequencies to arrive at the same point (time alignment)
How do amplifier spec sheets denote voltage gain?
(input senstivity)
-dBvg
-x-multiplier
What is power amplifier voltage gain?
ratio of input to output voltage
What mathematical formulas do you use to calculate amplifier voltage gain?
dB=20 log V in/V out
How do you match amplifier voltage gains?
-potentiometers
-Dip switches
-front panel attenuators
What are some of the side effects of reducing the LF amplifier gain?
-shift crossover point
-possible phase misalignment at the crossover point
EASE was delevoped by?
Dr. Wolfgang Ahnuert
What other types of room input methods are there other than vertex by vertex?
-create object 3D
-load prototypes
Name the four types of 3D shapes you can insert?
-cuboid
-pyramid
-cylinder
-cone
-cubola
Interior surfaces are what color?
yellow
What is the hot key used to save and apply?
F6
Why are most rooms modeled in the negative y axis?
the way speaker are faced when inserted
What is the command for cutting a face into two faces?
fixed cut
What is the hotkey to delete unattached vertices?
Ctrl+shift+F12
When adding floor to ceiling columns in a room you must?
is code of
What are some of the prototypes available?
-church
-ampitheater
-stadium
What applications is the SIM II V2.0 lab used for?
standalone measurement and research
What are the status panels?
information windows at the bottom of the screen
What are the 2 windows in spectrum mode?
reference, measurement
(amplitude vs. frequency)
What are the 2 windows in delay finder mode?
relative amplitude vs. time
(10x magnification)
What are the 3 traces in the frequency resnse screen?
-signal to noise (coherence)
-frequency response
-phase
What 2 choices under the setup menu reference channel are you provided with?
generator input
What 2 choices under the setup menu measurement channel are you provided with?
output mic
What is the hot key to turn the generator on?
alt G
Which frequency is typically used for measuring harmonic distortion?
1K
What is the hot key for the auto delay finder mode?
F3