Y9 representing sound

Sound outside of computers is...

• Analogue

• Digital

In order for sound to be stored in a computer it must be converted to...

• Analogue

• Digital

• Buddhism

• JPEG

Sound waves must be samples to create digital sound. A sample is...

• a measure of amplitude at a point in time

• the number of samples taken per second

• the file size of an image

When recording sound, the number of samples recorded per second is called the:

• sample rate

• sample resolution

• colour depth

• File size

To calculate the size of a sound file:

• colour depth * resolution

• sample rate * sample resolution * length in seconds

• number of samples * sample rate

• sample resolution squared

A 20-second sound recorded at 1000 Hz and 4-bit sample resolution will have a file size of...

• 10 KB

• 80 KB

• 10,000 KB

• 80,000 KB

Increasing the sample rate of a recording will result in...

• Higher-quality sound recording

• Increased file size

• Better compression

• Higher colour depth

• Increased amplitude

What is the sample rate measured in?

• BPS
• Hz

The number of samples taken each second

• Bit Rate
• Sample rate

What is the standard Sample Rate for recording a song?

• 44KHz
• 8KHz
• 92KHz