Language for the everyday Joe or Jane!
This copy from page 33 of the DMP-BD60/80 Panasonic Blu-ray instruction manual is VERY clear and EASY to understand for just about anyone!
"Bitstream:
Select “Bitstream” when the connected equipment can decode the
respective audio format.
–Connect equipment supporting HDMI (High Bit rate Audio) and use a
High Speed HDMI Cable in order to output high bit rate audio such as
Dolby Digital Plus, Dolby TrueHD, DTS-HD High Resolution Audio or
DTS-HD Master Audio.
≥PCM:
Select “PCM” when the connected equipment cannot decode the
respective audio format.
Refer to the operating instructions for connected devices to verify whether or
not they can decode each of the audio formats."