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61 Cards in this Set
- Front
- Back
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What dimensions are in an etc curve
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amplitude and time
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Tef gathers its data in which domain
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Frequency
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It take_____________to measure time and ___to measure frequency
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Frequency and Time
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WHat voltage should you not exceed
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1.7v
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Describe Phase
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Frequency Dependent time delay
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If C3 is at 130 Hz what is the 4th Harmonic of that note?
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520 Hz
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White Noise is
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Equal Energy per Frequency
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Pink Noise is
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Equal energy per octave
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A RTA has how many dimensions? How Many ports?
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2 dimensions and 1 port
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Which screen displays the diffrence between the reference and measurement channels in the Frequency domain.
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Frequency Response
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Which screen computes and displays the amplitude response of the measured system in the time domain
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Delay Finder
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The SIM II 2.0 lab software is used primarily for what two applications
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Stand alone measurements and Research
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What is the hotkey to turn on the Generator
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Alt+G
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In Delay Finder what is the HotKey for the Autoset Delay
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F3
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What advantages does a parametric eq have compared to a graphic eq
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Adjustable bandwidth and center frequency
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What are the two independent factors that determine the magnitude and frequency response of comb filtering
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frequency and time offset
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Why is it called comb filtering
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Viewing on a linear scale looks like the bristles of a comb
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Name 2 functions that are disabled when u enter show mode
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Single system and pretest
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what two menu changes could you make to help prevent blanking
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averages and smoothing
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What are the two parameters required for a primary mic position
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+/- 10 degrees on axis and center of coverage
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What are the two most commonly used weighting curves for spl meters
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A and C
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Phase Correction is used
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to correct for time alignment issues
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Name 2 side effects that may be seen by reducing the LF amplifier gain
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crossover point will shift and possible phase misalignment
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Name ways to model a standard room shape instead of placing vertex by vertex or extruding
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Insert a 3-d shape or insert prototype
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What does F6 key do in EASE
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Saves and applies
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Why do we model most rooms in the negative y axis
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It is the way the speakers are facing when inserted
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What is the command for cutting one face into 2 faces
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Fixed cut
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Name the person that created the Smaart software
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Sam Berkow
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What external hardware does SMAART need for acoustic Analysis of a speaker cabinet. ( Not for correction purposes)
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Measurement mic and Mixer
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What are the Reference Registers
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Memory storage areas
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What is Fixed Point Per Octave
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1/24th octave resolution
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____is a topographical view of a waveform similar to the waterfall display.
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Spectrograph
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What brand of mic do we use with smaart
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Earthworks M30
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What is RT60
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The time it takes a signal to decay 60dB
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Who was considered the "father of architectural acoustics" and created the RT60 Calculation
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Wallace Sabine
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What is the Formula to calculate the volume of a room
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L*W*H
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The speech carrier wave produced by the vocal cords for male talkers is around
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200hz and 350hz
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What does NCB stand for
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Balanced Noise Criteria
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If the noise average is 53dB and the talker to listener distance is 5m. What kind of vocal effort would be required for sufficient communication
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Raised
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What does Normal In Presence of Noise mean
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We involuntarily raise our voices because of the noise level
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Which 2 frequencies are used for calculating RASTI
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500hz and 2kHz
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What does RASTI stand for
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Rapid Articulation Speech Transmission Index
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In EASE for C50 what does C stand for
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Clarity
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What does C50 show
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Direct Reverberant Ratio
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What formula do you use to calculate the time window
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Bandwidth / sweep rate
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how do you calculate the distance sound travels
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time *speed of sound
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how do you calculate the amount of time sound travels when you know the distance
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distance/Speed of sound
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What is the time distance window
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Bubble
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It may be much more convient to set a _____ and _____ and let the computer find sweep rate and bandwidth
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resolution and sweep time
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total distance of a reflection
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a2+b2+c2
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What kind of calabrator
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Larson Davis CAL 200
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Why does tef use 20 micro pascals for calabrating the unit
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threshold of hearing
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What mic is used for tef
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goldline mk 10
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Hoes does the schroeder reverse integration curve calculate its data
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RIght to left back to direct signal
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TDS
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Time DELAY spectrometry
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Who developed the theory of time delay spectrometry
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Richard Heyser
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TEF
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Time Energy Frequency
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Which company currently owns the TEF Patent
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Goldline
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What kind of connectors does TEF have for line input and mic input
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2 BNC and 2 XLRS
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What kind of cable connections will do TEF do to the host computer
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Serial, Parallel and a usb/parallel adapter
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what dimensions are in an etc curve
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amp vs time
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