Quiz 3

Question 1

noise

Answer 1

any unwanted sound element introduced in the production process that was not present in the original sound signal

Question 2

signal-to-noise ratio

Answer 2

60 to 1 an audio measurement that specifies the amount by which a signal at a standard test level exceeds the level of noise produced by an electronic component.

Question 3

The S/N gives an indication of what?

Answer 3

the equipment’s ability to reproduce sound cleanly.

Question 4

Distortion

Answer 4

an unwanted change in the audio signal due to inaccurate reproduction of the sound.

Question 5

What is headroom in audio?

Answer 5

from – 12 dB to 0

Question 6

sound signal.

Answer 6

When sound is naturally produced

Question 7

audio signal

Answer 7

when that sound signal is then manipulated electronically

Question 8

which vibrate up and down and set the air molecules in a

Answer 8

push (compression) and pull (rarefaction) motion,

Question 9

There are four key characteristics of sound that help determine why one sound is different from another:

Answer 9

amplitude, frequency, timbre, and the sound envelope.

Question 10

amplitude

Answer 10

relates to its strength or intensity, which we hear as volume, or loudness.

Question 11

The louder the sound is, the ____ the amplitude

Answer 11

higher

Question 12

Sound amplitude is measured in what?

Answer 12

decibels

Question 13

Sounds in the range of ______ are detected by the human ear

Answer 13

0 dB to 120 dB

Question 14

Frequency

Answer 14

relates to the number of times per second that a sound wave vibrates which we hear as pitch

Question 15

In audio jargon, cycles per second are known as

Answer 15

hertz

Question 16

wavelength

Answer 16

the distance between two compressions (crests) or two rarefactions (troughs)

Question 17

timbre or tone

Answer 17

relates to the waveform of the sound.

Question 18

A sound’s wave envelope

Answer 18

relates to its duration, or the change in volume of a sound over a period of time

Question 19

a sound’s wave envelope develops through four specific stages:

Answer 19

attack, decay, sustain, release,

Question 20

equal loudness principle.

Answer 20

sounds that are equally loud will not be perceived as being equally loud if their pitch is differen