Text, Sound and Images

The standard exam formula for the size of an uncompressed sound file is:

file size (bits) = sample rate × sample resolution × duration

where:

• sample rate is in hertz (samples per second)
• sample resolution is in bits per sample
• duration is in seconds

To convert to bytes, divide by 8 (since 1 byte = 8 bits). To convert to kilobytes, divide by 8000 (or 8192 if the question uses the binary definition of a kilobyte).