1.2.4h - Sound

What is sound?

• A visual wave

• A type of energy

• A form of light

• A vibration that propagates as an audible wave of pressure through the air

What is the process called to convert an analogue signal into a digital binary one?

• Analogue-to-digital conversion

• Binary-to-analogue conversion

• Digital-to-analogue conversion

• Binary-to-digital conversion

What are the primary factors that affect the quality of a digitally converted sound wave?

• Amplitude and phase

• Frequency and wavelength

• Sample rate and bit depth

• Pitch and volume

What is the sample rate?

• The number of samples stored per second

• The measurement of the wave at regular intervals

• The amount of detail captured with each sample

• The range of numbers used for each sample

What is the bit depth?

• The measurement of the wave at regular intervals

• The amount of detail captured with each sample

• The number of samples stored per second

• The range of numbers used for each sample

What is the total size of a sound file calculated by?

• Multiplying the sample rate by the duration in seconds

• Subtracting the sample rate from the bit depth

• Adding the sample rate and the bit depth

• Dividing the sample rate by the duration in seconds

What is the relationship between bit depth and sound quality?

• Bit depth only affects file size

• Higher bit depth results in lower sound quality

• Higher bit depth results in higher sound quality

• Bit depth has no impact on sound quality

What is the relationship between sample rate and sound quality?

• Higher sample rate results in higher sound quality

• Sample rate only affects file size

• Sample rate has no impact on sound quality

• Higher sample rate results in lower sound quality

What is the bit depth of CD quality sound?

• 32 bits per sample

• 8 bits per sample

• 24 bits per sample

• 16 bits per sample

What is the sample rate of a music CD?

• 176,400Hz

• 88,200Hz

• 44,100Hz

• 22,050Hz