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Worksheets1.2 Data Rep: Sound
Total questions: 17
Worksheet time: 9mins
Is 'real' sound analogue or digital?
Analogue
Digital
Define what is meant by 'sampling'
Height of the wave is measured, at intervals and stored as binary.
The number of samples taken each second
The number of bits used per second of audio
The amount of information required to describe one second of a sound.
Height of the wave is measured, at intervals and stored as binary.
The number of samples taken each second
The number of bits used per second of audio
The amount of information required to describe one second of a sound.
Define what is meant by 'bit depth'
Height of the wave is measured, at intervals and stored as binary.
The number of samples taken each second
The number of bits used per second of audio
The amount of information required to describe one second of a sound.
Define what is meant by 'bit rate'
Height of the wave is measured, at intervals and stored as binary.
The number of samples taken each second
The number of bits used per second of audio
The amount of information required to describe one second of a sound.
The higher the bit depth, the higher the quality of the audio, but the larger the file size
The more bits that are sampled the better the accuracy of the file but also the greater the file size.
Greater the frequency of the samples, the better the sound quality.
Sample rate is measured in....?
Bits per second (bps)
Hertz (Hz)
Megabits per second (Mbps)
Identify the formula to calculate the bit rate for ONE second of audio
= sample rate x bit depth x number of channels
Width (in pixels) * Height (in pixels) * Colour depth
