Data Representation - How Computers Represent Sound (GCSE Computing)

The following is a GCSE Computing test covering 'Data Representation - How Computers Represent Sound'

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What is quantisation error (quantisation noise) in digital audio?

Calculate the bit rate (bits per second) for CD-quality audio: 44.1 kHz sample rate, 16-bit depth, stereo (2 channels).

What is the name of the process that converts an analogue sound wave into digital data?

What is the role of a DAC in a computer audio system?

Which unit is used to measure the sample rate of digital audio?

In digital audio, what is a "sample"?

What does bit depth (bits per sample) determine in digital audio?

How many bytes does a single 16-bit mono audio sample occupy?

Which type of audio compression reduces file size by discarding some original audio data, often causing a loss in quality?

Why might increasing the sample rate beyond what is required be wasteful?

Which statement correctly contrasts lossy and lossless audio compression?

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