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48 Cards in this Set
- Front
- Back
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What are the three distinct forms of particle motion?
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Cylindrical, Transverse, Longitudinal
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How do you calculate the velocity of sound knowing the temperature?
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C=49 (sqr root)459.9 = degree
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How does temperature affect the velocity of sound?
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higher temp = faster sound
lower temp = slower sound |
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What is wavelength?
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The length of a wave.
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How do you calculate wavelength?
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wavelength = 1130/hz
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How can you reverse polarity?
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Swap pins 1&2
swap +&- reverse bananas |
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Describe Phase.
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Frequency dependant time delay
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How do you calculate octave relationships?
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2:1 ratio
a doubling |
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How do you calculate harmonics?
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X of fundamental.
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How do you calculate a range of octaves?
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2^n = Fh/Fl
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What are the main reasons of sound system measurement?
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Maintenance, Artistic, leagal.
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What 5 basic test signals are used for sound system measurement?
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white noise, pink noise, shaped noise, broadband pulse, sin waves.
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What is White noise?
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Equal energy per frequency.
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What is Pink noise?
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Equal energy per octave.
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What are the 2 most common weighting curves used for SPL meters?
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A and C
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What dimension is a Real Time Analyzer missing?
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Time
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What is The Fourier Transform?
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Math calculation that converts Amp vs. Time into Amp vs. Freq.
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What measurement systems use FFT?
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SIMM, SMAART
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What does TEF stand for?
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Time Energy Frequency.
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What does MLS stand for?
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Maximum Length Sequence.
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What is an electronic crossover point?
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Where low and high output of a processor crosses.
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What is acoustic crossover point?
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when both drivers are driven at the same amp.
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what is amplitude correcction
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boost in certain areas of freq response to correct for inefficiencies of speaker cabinet.
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what is phase correction.
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time alighnment
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How do amplifier spec sheets denote voltage gain?
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x-multiplier
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what is power amplifier voltage gain
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ratio of input to output woltage
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how do you match amplifier voltage gain
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potentiometers, dip switch, front panel attenuators.
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What are some of the side effects of reducing the LF amplifier gain.
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decrease LF buildup
Shifts the acoustic crossover Requires the HF driver to carry more of the MF power |
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Ease was developed by who?
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Wolfgang Ahnert
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What other types of room input methods are there other than vertex by vertex
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extrude
prototypes insert shape 3D |
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name the 5 types of 3D shapes you can insert
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cuboid
cylinder cone cupola pyramid |
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Interior surfaces are what color?
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Yellow
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What is the hot key used to save and apply?
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F6
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Why are most rooms modeled in the negative Y axis.
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direction speakers are facing when inserted.
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What is the command for cutting a face into two faces?
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Fixed cut
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What is the hotkey to delete unattached vertices?
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ctrl + Shift + F12
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When adding floor to ceiling columns in a room you must?
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is coat of
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What are some of the prototypes available
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church, amphitheater, redubt
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what applicationss sis the SIM II V2.0 lab used for
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stand alone measurement
research |
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What are the status panels
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info windows at bottom of screen
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what are the 2 windows in Spectrum mode
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reference and measurement
(amps vs freq) |
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what are the 2 windows in Delay Finder mode
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relative amp vs. time
bottom is 10x multiplier |
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what are the 3 traces in the Frequency Response screen
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Freq response
signal to noise (coherence) phonic |
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what 2 choices under the setup menu reference channel are you provided with?
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generator
input |
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what 2 choices under the setup menu measurement channel are you provided with?
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output
mic |
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what is the hot key to turn the generator on?
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Alt G
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which frequency is typically used for measuring harmonic distortion?
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1K
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what is the hot key for the auto delay in the delay finder mode?
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F3
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