Uncompressed audio as stored on an audio-CD has a bit rate of 1,411.2 kbit/s, (16 bit/sample × 44100 samples/second × 2 channels / 1000 bits/kilobit), so the bitrates 128, 160 and 192 kbit/s represent compression ratios of approximately 11:1, 9:1 and 7:1 respectively. COUNT 4
QSN1 What is stored on an audio-CD that has a bit rate of 1,411.2 kbit/s? ANS1 Uncompressed audio QSN2 What does a bit rate of 128 represent in terms of compression ratio? ANS2 11:1 QSN3 What would a bit rate of 160 correspond to in terms of compression ratio? ANS3 9:1 QSN4 What would a bit rate of 192 kbit/s have for a compression ratio? ANS4 7:1