
How Real-World Information Becomes Computable Data ◾ 47
at a rate of 44.1 kHz, digital audio tapes (DATs) are sampled at 48 kHz,
and a 96 kHz sampling rate is used for digital video discs (DVDs).
Consider a song that is ve minutes long and is sampled at a rate of
48 kHz for recoding on a digital audio tape. To determine the number of
samples required to encode the song we must note that there are 48,000
samples taken every second and that the song lasts for 300 seconds. us,
the song will be encoded as a sequence of 48000 × 5 × 60 or 14,400,000
samples. For this example, we will assume that a single sample is encoded
as an 8 bit stri ...