Understanding Sound Storage Concepts

Explain how an analogue sound wave is converted into a binary sample.

• By measuring the frequency of the sound wave and converting it to binary.

• By measuring the amplitude of the sound wave at specific intervals and converting it to binary.

• By measuring the speed of the sound wave and converting it to binary.

• By measuring the wavelength of the sound wave and converting it to binary.

What is a sample rate?

• The number of bits used to represent each sample.

• The number of times per second the amplitude of the sound wave is measured.

• The total duration of the audio file.

• The size of the audio file in bytes.

Explain two ways an audio file will be affected if the sample rate is increased.

• The audio quality will decrease, and the file size will decrease.

• The audio quality will increase, and the file size will increase.

• The audio quality will remain the same, and the file size will decrease.

• The audio quality will decrease, and the file size will remain the same.

What is bit depth?

• The number of times per second the amplitude of the sound wave is measured.

• The number of bits available to represent each sample.

• The total duration of the audio file.

• The size of the audio file in bytes.

Explain two ways an audio file will be affected if the bit depth is increased.

• The audio quality will decrease, and the file size will decrease.

• The audio quality will increase, and the file size will increase.

• The audio quality will remain the same, and the file size will decrease.

• The audio quality will decrease, and the file size will remain the same.

An audio sample has a bit depth of 8, a sample rate of 10, and it is 12 seconds long. What is the file size in bytes?

• 120 bytes

• 96 bytes

• 150 bytes

• 100 bytes

What is the unit of measurement for sample rate?

• Hertz (Hz)

• Kilohertz (kHz)

• Bits per second (bps)

• Bytes

What is the effect of a low sample rate on audio quality?

• It results in high-quality sound.

• It results in low-quality sound.

• It has no effect on sound quality.

• It results in medium-quality sound.

What is the effect of a high bit depth on audio quality?

• It results in low-quality sound.

• It results in high-quality sound.

• It has no effect on sound quality.

• It results in medium-quality sound.

How do you calculate the file size of a sound file?

• Sample rate + bit depth + duration

• Sample rate x bit depth x duration

• Sample rate / bit depth / duration

• Sample rate - bit depth - duration