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Test
Your EQ #148— Answer
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Answer
6
The number of bits used in
a 1-second recording is:
channels × samples per
second × bits per sample
The number of seconds that
fit onto a storage device is:
storage capacity / data rate
Since the problem asks for
the number of hours, we'll divide the answer by 3600,
which is the number of seconds in one hour.
CD Quality:
data rate = 2 × 44100
× 16 = 1411200 bits/second
recording time for 1GB = 8000000000
/ 1411200 / 3600 = 1.57 hours
Radio Quality:
data rate = 1 × 22050
× 8 = 176400 bits/second
recording time for 1GB = 8000000000
/ 176400 / 3600 = 12.6 hours
Contributor: Naveen PN
Published: November-2002
