Microphones Flashcards
AKG C414B - ULS
Type: Condenser 48V: Yes Polar response: Variable (4) Applications: Vocals, piano, percussion. Character: Full-bodied. Features: Pads + HPFs
AKG C451B
Type: Condenser 48V: Yes Polar response: Cardioid Applications: Acoustic guitar, snare, hi-hats, overheads. Character: High-end rise. Features: Pads + HPFs
AKG D112
Type: Dynamic 48V: No Polar response: Cardioid Applications: Kick, bass cabinet, trombone, double bass, cello Character: 4K presence rise. Features: None.
Audio Technical AE3000
Type: Condenser 48V: Yes Polar response: Cardioid Applications: Guitar cabinet, toms, snare, timpani, overheads, horns. Character: Open Features: Pad + HPF.
Audio Technica AT4031
Type: Condenser 48V: Yes Polar response: Cardioid Applications: Snare, overheads, acoustic guitar, piano, horns. Character: Slight high-end rise. Features: HPF.
Audio Technica AT4050
Type: Condenser 48V: Yes Polar response: Variable (3) Applications: Vocals, piano, strings, overheads, guitar cabinet. Character: Well balanced. Features: Pad + HPF.
The dB is used when measuring mics because:
It’s the standard for acoustic pressure measurements in audio.
20 micropascals is:
0dB-SPL, which is the hearing threshold of the average human at roughly 3kHz.
What is sensitivity?
The sensitivity states what voltage a microphone will produce with a certain sound pressure level input. A microphone with high sensitivity will give a high voltage output and will therefore not need as much amplification (gain) as a model with lower sensitivity.
What happens if you connect a speaker to a mic input on a mixer?
The speaker works like a big microphone.
What is the Proximity Effect?
Is an increase in LF response when a cardioid mic is close to an acoustic source.
When a mic that is 3 inches in front of a singer is moved to 6 inches, the level will:
Drop 6 dB and so does the gain-before-feedback capability.
The tightest cardioid pick-up pattern is:
Hyper-cardioid.
An omni mic placed a few millimeters away from a reflective surface creates an effect identical to a:
PZM or Boundary mic. Using an omni against the floor or taped to a wall with the diaphragm within a 1/8-inch off the surface puts it in the pressure zone for most of the audio bandwidth.
Shure introduced the 3B and 10B Carbon microphones in:
1936.
The Sennheiser MD421 was introduced in:
1960.
What stereo micing technique uses a coincident pair of two bi-directional microphones in the same point, angled at 90° to each other?
Blumlein stereo.
What stereo micing technique uses two cardioid mics with the capsules spaced 17cm apart, with the two mics at a 110° angle creating the stereo image?
ORTF (Office de Radiodiffusion Television Francais).
What stereo micing technique uses a cardioid microphone capsule as center channel and a bi-directional figure-eight-mic at the same point, angled at 90°, which is then brought in on faders, out-of-phase to create the stereo image?
M-S.
Does a PZM receive direct and reflected sound simultaneously?
Yes.
Is the Crown PCC an omnidirectional microphone?
No. The PCC series are half-cardioids and half-super-cardioids.
If wired according to the AES standard, pin 2 of a microphone’s XLR connector will:
Always be “hot”, “live” or positive. Positive pressure on the mic’s diaphragm will produce a positive voltage on pin 2.
Does an electret microphone require a power supply?
Yes. It needs either phantom power from the mixer it’s plugged into or a battery.
Which microphone naturally has a figure eight or bi-directional pick-up pattern?
Ribbon.
What is considered low impedance (lo-z)?
<600 ohms.
What is considered medium impedance (mid-z)?
600-10k ohms.
What is considered high impedance (hi-z)?
> 10k ohms.
Common uses for Shure SM58? (3)
Vocals
Brass
Drums
Common uses for Shure Beta58A? (1)
Vocals
Common uses for Shure SM57? (4)
Guitar amps
Snare drums
Toms
Percussion
Common uses for Shure Beta57A? (3)
Guitar amps
Snare drums
Vocals
Common uses for Shure Beta52? (2)
Kick drums
Bass guitar
Common uses for AKG C391? (4)
Choirs Lecterns Acoustic instruments Hats Cymbals Percussion
Common uses for AKG C392? (1)
Stereo A/B
Common uses for AKG D112 (“The Egg”)? (5)
Kick drums Double bass Cello Bass guitar amps Trombone
Common uses for Sennheiser E604? (3)
Toms
Snare drums
Percussion
Common uses for AKG C414B - ULS? (3)
Vocals
Piano
Percussion
Common uses for AKG C451B? (4)
Acoustic guitar
Snare
Hi-hats
Overheads
Common uses for Audio Technical AE3000? (6)
Guitar cabinet Toms Snare Timpani Overheads Horns
Common uses for Audio Technica AT4031? (5)
Snare Overheads Acoustic guitar Piano Horns
Common uses for Audio Technica AT4050? (5)
Vocals Piano Strings Overheads Guitar cabinet
