Sound Test

Question 1

Microphones

Answer 1

• Transducers
• Converts mechanics energy (sound waves) into electrical signal
• Transduce through the diaphram

Question 2

Pick-Up Pattern

Answer 2

• Shape around the mix where sound is picked up
• Cardioid: heart shaped
• Omni-directional: 360 degrees
• Uni-directional: shotgun mic (directional)

Question 3

Element Type

Answer 3

• Mechanism by which sound is picked up
• Dyanmic: diaphram is a wire inside a magnet; less sensitive; good in loud environments.
• Condenser: diaphram is thin metal strip; more sensitive; bad for loud environments; can record from further away.

Question 4

Shotgun Mic

Answer 4

• Directonal & Condenser

Question 5

Shure 58 Mic

Answer 5

• Dyanmic & Cardioid

Question 6

Lavaliere Mic

Answer 6

• Codenser & Omni-directional (or cardioid)

Question 7

Decibel

Answer 7

• (dB) Used to measure the intensity of a sound or power of electrical signal
• measures “volume” or amplitude
• “clipping” occurs when decibel is too high

Question 8

Amplitude

Answer 8

• Loudness of a sound; compression = up; rarefaction = down

Question 9

Hertz

Answer 9

• (Hz) Wavelength cycle per second; frequency
• Measures frequency (pitch; or number of Hz per second)
• Frequency is faster = pitch is higher

Question 10

Analog

Answer 10

• Physical representation or analogy of sound (i.e. clock hands, ruler)
• Continuous, has unlimited resolution & degrades w/replication
• Original has highest fidelity

Question 11

Hi-Fidelity

Answer 11

• Close to original

Question 12

Lo-Fidelity

Answer 12

• Not close to original

Question 13

Digital

Answer 13

• Numerical representation (binary code) interpreted as sound.
• Dictated by the bit depth & sample rate
• Can be replicated w/o damage
• Finite Resolution
• Fidelity has improved over time

Question 14

Sample Rate

Answer 14

• How often samples are recorded; the higher the sample rate = higher fidelity

Question 15

Bit Depth

Answer 15

• How much detail is recorded in each sample of data.