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Glossary

PCM
Pulse-code modulation (PCM) is a digital representation of an analog sound signal
Primary Audio
Refers to the feature audio of a Blu-ray Disk
Sampling Frequency
The constant interval (in Hertz) in which audio is captured as PCM
Secondary Audio
Refers to the Interactive Audio of a Blu-ray Disk (e.g., director's comments)
Stereo
2-channel audio