Phase 2 Study Guide Flashcards
The sampling frequency should be at least twice the highest frequency contained in the analog signal describes what?
The Nyquist Theorem
What electronic component is used for extremely accurate timing in digital audio devices?
Crystal Oscillator
The following describes what cable configuration? Two wires in our cable carry a positive and negative signal, which is the same signal but polarity reversed. The positive signal is connected to pin 2 and the negative is connected to pin 3. The pin 2&3 terminals are put back in phase with one another at the preamplifier, which cancels out the noise but amplifies the signal. The twisted pair is designed to minimize EMI and RFI noise. A ground lead, connected to pin 1, minimizes any capacitance interference from nearby circuits by filtering the capacitance into the earth through a copper lead sunk into the earth.
Balanced cable
This scenario best describes what artificial effect? An amplified aux send is sent to a speaker in a room designed to produce a certain amount of reflections. Two microphones, a left and a right, are used to capture the reverberations in the room and added to the original audio. The captured reverb is our wet signal and the original is considered our dry signal.
Recording echo chamber
An obtuse low level noise caused by decreasing the bit depth in a digital audio signal describes what?
Quantization noise
What is the function of a compressor?
Reduces dynamic range
What is the function of a high pass filter?
Attenuates audible content below a cutoff frequency
Pin 3 on a balanced cable carries what signal?
Negative
Select the sonic characteristics that describe a VCA compressor Dirty Clean Organic Slow Fast
Fast and clean
What analog artificial effect uses a spring to create artificial reverberation?
Spring Reverb
Select all of the solid state amplifiers from the list: Anode Transistor Transformer OpAmp Triode
Transistor, Transformer and OpAmp
This type of amplifier boosts an unbalanced, high impedance, instrument level signal to a balanced, low impedance, mic level signal or can convert a low impedance, line level signal to a mic level signal.
DI box
The quality of the sample in a digital signal is determined by what?
The sample rate
What is the second step to digitization?
Quantization
Pin 2 on a balanced cable carries what signal?
Positive
What rare type of jitter is similar to a warped record?
WOW jitter
How long can an unbalanced cable be before serious noise discrepancies occur?
15’
What sonic characteristic do solid state amplifiers have?
Clean
What analog electric artificial effect uses a plate of sheet metal inside a wooden box?
Plate reverb
What cable type and connector is used on a microphone?
Female XLR balanced
What engineer used the first echo chamber for recording?
Bill Putnam
Vibrato is the variation in the volume of a signal. True or False?
False
What cable type and connector is used for an acoustic guitar?
TS unbalanced
What is the first step to digitization?
Sample the audio
What are echo chambers primarily used for today?
Impulse response
An audible discrepancy that occurs in digital audio systems due to incorrect timing placement of samples describes what?
Jitter
Select the sonic characteristics that describe an Opto compressor.
Slow and organic
Select the sonic characteristics that describe a FET style compressor.
Fast and dirty
What type of amplifier is used inside a passive DI box?
Transformer
Tremolo is the variation in the volume of a signal. True or False?
True
The quality of the quantization in a digital signal is determined by what?
The bit resolution or the word length
What type of track in pro tools is recommended for using a reverb plugin?
Aux track
What electrode in a vacuum tube is used to boil the electrons?
Cathode
This type of amplifier boosts a mic level signal to a line level signal. This amplifier is also responsible for supplying DC voltage to externally polarized microphones and active DI boxes.
Mic preamp
What sonic characteristic do tube amplifiers have?
Warm
The time it takes a signal to fall 60dB down from its highest amplitude is known as what?
RT60
How many peaking filters are usually in a parametric EQ?
3
How many shelving filters are in a parametric EQ?
2
Pin 1 on a balanced cable carries what signal?
Ground
What type of amplifier is used inside of a solid state, active DI box?
OpAmp
Select the lossless audio file formats: AIFF WAV ALAC MP3 FLAC
ALAC & FLAC
What type of time based processing plugin can be used for quick, “on the fly” effects editing in pro tools?
RTAS
Select the Lossy audio file formats: MP3 FLAC AIFF AAC WAV
MP3 and AAC
