WorksheetsData Representation - Sound and Compression
Total questions: 20
Worksheet time: 14mins
What is the sample rate?
The number of times a sound wave is sampled per second
The number of bits used to store each sample
How loud a sound is
The size of the sound wave
What is sample rate measure in?
Bits
Hertz
GB
amps
What is sample resolution?
The number of bits used to store each sample
The number of times a wave is sampled
How loud a sound is
How quiet a sound is
What is used to convert a sound wave in to a digital format?
A sound wave converter
A router
An amplitude to digital converter
Analogue to digital converter
What is the formula for finding a sound files size?
size = rate * resolution * seconds
size = rate * resolution * minutes
size = amplitude * bits * seconds
size = sample * frequency * bits
What is amplitude?
Number of samples taken
The number of bits per sample
The height of the sound wave
The pitch
A sound clip uses a sample rate of 4000Hz, an 8 bit sample resolution, and is 10 seconds long. What is the file size in bits?
4,000
32,000
40,000
320,000
A continuously changing wave such as natural sound.
Analogue
Digital
Binary
Fluid
The number of bits used to store each sound sample.
Bit depth
Bit rate
Bit number
Sound bits
The unit of audio sampling rates.
kHz
KB
KS
KSz
Amplitude is…
The height, loudness of the sound
The number of samples taken in a second
is a code for representing English characters as numbers
What is the file size (in bits) of a sound with the following properties:
Sampling rate = 1,000Hz
Sample resolution = 16 bits
Length = 300 seconds
480 bits
4,800 bits
408,000 bits
4,800,000 bits
A sound has a file size of 17, 640 kilobytes. How much would this be in megabytes?
1.76 Mb
17.64 Mb
176.4 Mb
1764 Mb
What is the name of the process of capturing sound and converting it into digital form?
(a)
