Compact Disc (“CD”) AKA “Redbook CD”

1982
PCM (Pulse Code Modulation)
44.1 kHz

HDCD

1995
Regular CD: 16 bits
HDCD: 20 bits

SACD (Super Audio Compact Disc)

Regular CD: PCM
SACD: DSD (Direct Stream Digital)
2.8 MHz
4.7 GB

IMSM126_8599C993CC289E197463392298433ADE74DBDA1A