Data Representation Unit

One binary digit is called

• bit (b)

• byte (B)

Sound is a pressure wave that causes the air to vibrate.

• False

• True

A computer cannot interpret an analogue sound wave like this one. It must be digitised, i.e. turned into ............ values.

• denary

• hexadecimal

• binary

The amplitude (height) of the sound wave represents ............

• frequency

• volume

• sample rate

The higher the amplitude, the higher the volume of the sound.

• True

• False

the process of taking measurement of sound at regular intervals is called .....

• Sampling

• Sample rate

............ .......... is the number of measurements taken per second.

• Frequency

• Sample rate

• Sampling

To calculate representation size of a sound file, we multiply ...........................

• sample size x sample rate x duration

• sample size x sample resolution x duration

• sample rate x duration

ASCII Stands for:

• American System Code for Internal Information

• American Standard Code for Information Interchange

ASCII coding system uses ....

• 127 bits

• 8 bits

• 7 bits