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Audio Recording Exam 1

Terms in this set (56)

Reverberation
collected of reflected sounds within a space; 1st, 2nd order of reflections; can be controlled mechanically (banners, curtains)
Order of Reflections
number of surfaces a sound wave bounces off of before reaching the listener's each
Echo
direct reflection of a sound; will usually only have one reflection
Room Node
a frequency at which a room resonates
Standing Waves
a soundwave that emphasizes a specific frequncy and bounces between two+ surfaces (usually 300hz or lower)
Slapback
echo that is produced off an untreated/parallel/rear wall
Absorption Panels
fabric covers with fiberglass panels to absorb soundwaves
Diffusion Panels
wood, plastic, rigid fiberglass that diffuse sound across a large section of space
Quits/Baffles
heavy fabric drapes/sacks/pillows hung on walls or ceilings to absorb sound waves
Audio Interface
simplest connection between a mic and a computer without involving a mixing board
Computer connection
connecting the interface to the computer; usually USB2, USB3, or Thunderbolt; older generations used firewire
1/4" Analog Input/Out
allow signal to be input/output to/from the interface/recording software; allow for additional speakers or more analog recording channels
Mic Pre
boosts the incoming signal/volume of the microphone
Digital I/O
connections that allow the flow of digital signal between the interface and another digital device
Workclock I/O
connection made through a BNC connector and is used to synchronize digital clock signals between multiple digital sources
Remote Control
higher end interfaces include the option of a stand alone remote that offers full or partial control of the interface or software
Recording/Back-up/Stand-Alone Mode
recording directly to a hard drive
Parts of the Ear
Inner, middle, outer (hammer, anvil, stirrup)
Trasnducers
any object (microphones) that convert energy from one form to another
Dynamic Mics
rely on mechanical energy; rely on a moving coil and magnet; reduced output volume; not as sensitive to subtle sounds
Ribbon Mics
type of dynamic mic; use an accordion folder ribbon of metal between two magnetic coils; more sensitive than other dynamic mics, but are fragile and expensive
Condenser Mics
derives electrical output by electrical means within the microphone; capacitators; contain diaphragms with an electrical charge; amplify output with electronics; high transient response (pick up more sounds)
Polar Pattern
The two-dimensional representation of the microphone pickup pattern.
Cardioid
slightly heart shaped pattern that picks up sound equally around the mic
Omni
spherical shaped pattern that picks up sound equally around the mic
Figure of 8
bidirectional pattern that incoporates two loves of polarity (-/+) on opposite sides of the mic
Mic Makes
Neumann, Scheops, DPA, AKG, Shure, MicroTek Gefel
DAW
digital audio workstaiton; software package that allows a user to record and manipulate software
Pro Tools
subscription based; seen as the #1 recording DAW in the industry for professional and at home use; lots of advertising
Wave Lab Pro
purchase; great two track audio recording built it; mainly for mastering audio files
Audition
recording and editing; Adobe Suite
Logic
recording and editing; difficult to learn how to use
Pyramix
Windows only; popular in Europe; editing
Reaper
open source; recording, editing, mixing; plug-ins
Sound
a vibration that propagates as an acoustic wave through a transmission of gas, liquid, or solid
Pitch/Frequency
length at which th sound wave vibrates (hz)
Volume
the amplitude at which the sound vibrates (dB)
Timbre
the descriptive nature of the sound
Infrasound
sound below 20hz
acoustic Sound
sound within human hearing
Ultra Sound
sounds above 20khz
Hearing Range
20-20,000hz
Cochlea
inner ear structure; fluid filled and snail shaped; covered with hairs
Localization
being about to tell where a sound is coming from
A/B or Spaced Pairs
relies on time cues; small diaphragm omni directional mics;
Telearc Pairs
2 omnidirectional mics spaced 24" apart
A/B or a/b Pairs
2 omnidirectional mics spaced 12" or less at aproximately 90 degrees
Decca Tree
3 omnidirectional mics placed in a trianlge approximately 1x2 meters; gets rid of the "hole in the middle"
Coincidental Pairs
relies on intensity cues; small or large diaphragm; usually mono compatible
XY Pair
2 cardioid mics at 90 degrees facing inward and overlapping
Blumlein Pair
2 figure of 8 mics at 90 degrees facing inward
Mid-Side/MS
1 cardioid mic facing forward, 1 figure of 8 mic side facing; the mics are matrixed to duplicate the figure 8 pattern; mono compatible
Near-Coincidental Pairs
relies on time and intensity difference; small or large diaphragm; always mono compatible; very accurate; share the same horizontal plane
NOS Pair
2 carioid mics spaced 30 cm at 90 degrees
ORTF Pair
2 cardioid mics spaced 17 cm at 110 degrees
Mono compatibility
the ability of a stereo sound source to remains table after being summed to mono (without losing volume)
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