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Flashcards in Microphones Deck (41)
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1

AKG C414B - ULS

Type: Condenser
48V: Yes
Polar response: Variable (4)
Applications: Vocals, piano, percussion.
Character: Full-bodied.
Features: Pads + HPFs

2

AKG C451B

Type: Condenser
48V: Yes
Polar response: Cardioid
Applications: Acoustic guitar, snare, hi-hats, overheads.
Character: High-end rise.
Features: Pads + HPFs

3

AKG D112

Type: Dynamic
48V: No
Polar response: Cardioid
Applications: Kick, bass cabinet, trombone, double bass, cello
Character: 4K presence rise.
Features: None.

4

Audio Technical AE3000

Type: Condenser
48V: Yes
Polar response: Cardioid
Applications: Guitar cabinet, toms, snare, timpani, overheads, horns.
Character: Open
Features: Pad + HPF.

5

Audio Technica AT4031

Type: Condenser
48V: Yes
Polar response: Cardioid
Applications: Snare, overheads, acoustic guitar, piano, horns.
Character: Slight high-end rise.
Features: HPF.

6

Audio Technica AT4050

Type: Condenser
48V: Yes
Polar response: Variable (3)
Applications: Vocals, piano, strings, overheads, guitar cabinet.
Character: Well balanced.
Features: Pad + HPF.

7

The dB is used when measuring mics because:

It's the standard for acoustic pressure measurements in audio.

8

20 micropascals is:

0dB-SPL, which is the hearing threshold of the average human at roughly 3kHz.

9

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.

10

What happens if you connect a speaker to a mic input on a mixer?

The speaker works like a big microphone.

11

What is the Proximity Effect?

Is an increase in LF response when a cardioid mic is close to an acoustic source.

12

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.

13

The tightest cardioid pick-up pattern is:

Hyper-cardioid.

14

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.

15

Shure introduced the 3B and 10B Carbon microphones in:

1936.

16

The Sennheiser MD421 was introduced in:

1960.

17

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.

18

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).

19

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.

20

Does a PZM receive direct and reflected sound simultaneously?

Yes.

21

Is the Crown PCC an omnidirectional microphone?

No. The PCC series are half-cardioids and half-super-cardioids.

22

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.

23

Does an electret microphone require a power supply?

Yes. It needs either phantom power from the mixer it's plugged into or a battery.

24

Which microphone naturally has a figure eight or bi-directional pick-up pattern?

Ribbon.

25

What is considered low impedance (lo-z)?

<600 ohms.

26

What is considered medium impedance (mid-z)?

600-10k ohms.

27

What is considered high impedance (hi-z)?

>10k ohms.

28

Common uses for Shure SM58? (3)

Vocals
Brass
Drums

29

Common uses for Shure Beta58A? (1)

Vocals

30

Common uses for Shure SM57? (4)

Guitar amps
Snare drums
Toms
Percussion