Introduction To Digital Audio - 3.01 Question Preview (ID: 48524)


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There are four audio file formats. They are: _____. _____, ______ ,_____
a) .ai, .psd, .svg, .wav
b) .bye. . hi. .mp4, psp
c) .wav, mp3. .aiff. .ogg
d) .wav

__________ is an area upon which audio moves. It may be a single waveform or could be made up of clips.
a) Waveform
b) Editing
c) Track
d) Clip

Channel is defined as _____
a) removes everything from the left and right of selected audio.
b) reproduction of sound using two or more independent audio channels.
c) change the volume of selected audio
d) change the color of the selected picture

_________is a short segment of audio. It can be combined with others to make an audio track.
a) Waveform
b) Clip
c) Track (Channel)
d) Channel

The rate or frequency at which a sound is sampled to digitize it. Measurements of a sound wave over time measured in Hz (cycles/sec) is__
a) Bit Rate
b) Crest
c) Sample rate
d) Amplitude

The number of computer bits that are conveyed or processed per unit of time is _____ ______
a) bit rate
b) sample rate
c) decibels
d) pitch

Waveform is
a) a visual representation of an audio signal.
b) is a short segment of audio. It can be combined with others to make an audio track.
c) an area upon which audio moves. It may be a single waveform or could be made up of clips.
d) Normally expressed in kilobits per second (kbps).

Sampling is _____
a) The rate or frequency at which a sound is sampled to digitize it.
b) when computers can only deal with discrete information, so analog sound must be converted to digital.
c) The rate or frequency at which a sound is sampled and does not digitize it.
d) the number of computer bits that are conveyed or processed per unit of time

_________ is changing the volume of selected audio
a) Amplify
b) Channel
c) Trim
d) Waveform

What is a pitch?
a) Point that exhibits maximum amount of upward displacement from the rest position.
b) Number of waves to pass a point in one second. (How Fast)
c) Number of waves to pass a point in five second. (How Slow)
d) Quality of a sound determined by the rate of vibration. The degree of highness or lowness of a tone. (How High)

Analog sound is
a) a continuous phenomena, such as speaking or an electrical pulse from an instrument
b) can only deal with discrete information.
c) converts electrical energy to binary code (1’s and 0’s) that is readable by computers.
d) a point that exhibits maximum amount of upward displacement from the rest position.

Distance from crest to crest is called _________.
a) Trough
b) Crest
c) Frequency
d) Wavelength

Amplitude is defined as_________
a) Distance from rest to crest or rest to trough.
b) Point that exhibits maximum amount of downward displacement from the rest position.
c) Distance from crest to crest.
d) Number of waves to pass a point in one second. (How Fast)

Number of waves to pass a point in one second (how fast) is called ______
a) Frequency
b) Amplitude
c) Pitch
d) Crest

Trough is defined as:
a) Point that exhibits maximum amount of downward displacement from the rest position.
b) Point that exhibits maximum amount of upward displacement from the rest position
c) Distance from crest to crest.
d) Distance from rest to crest or rest to trough.

The frequency of a sound is measured in ___________
a) Decibels (dB)
b) Frequency
c) Hertz (Hz). 1000 Hertz=Kilohertz (kHz)
d) Crest

Point that exhibits maximum amount of upward displacement from the rest position are called ________.
a) Audacity
b) Wavelength:
c) Trough:
d) Crest

A ________ _________ is an audible vibration that travels through air or water.
a) frequency
b) sound wave
c) crest
d) trough

Decibels (dB)
a) The loudness or intensity of a sound is measured in ________
b) Vibrations that travel though the air or some other medium are _________.
c) The frequency of a sound is measured in _______.
d) Point that exhibits maximum amount of upward displacement from the rest position are _________.

_________ vibrations that travel though the air or some other medium
a) Sounds
b) Frequency
c) Decibels
d) Audacity

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