Quote:
Originally Posted by dahlgren 
Still trying to get the best SQ out of my AVP/UD9004. I recently posted these questions and they went unanswered. I value all your experience and knowledge.
What is LPCM for 2ch and LPCM Multi?
The choices of bitstream, Source Direct off/on50 or 100kHz, AFDM?
Lot to learn. I've read the manual over an over. Some above are unable to be selected when others are selected. Taking all this in...
UD9004 says manual SACD over HDMI audio signals are output at 44.1 kHz 16-bit. Is this normal for blu ray/SACD players?

Still trying to get the best SQ out of my AVP/UD9004. I recently posted these questions and they went unanswered. I value all your experience and knowledge.
What is LPCM for 2ch and LPCM Multi?
The choices of bitstream, Source Direct off/on50 or 100kHz, AFDM?
Lot to learn. I've read the manual over an over. Some above are unable to be selected when others are selected. Taking all this in...
UD9004 says manual SACD over HDMI audio signals are output at 44.1 kHz 16-bit. Is this normal for blu ray/SACD players?
LPCM is Linear Pulse Code Modulation and means the digital format music is stored. But it is not Dolby or DTS which is different. PCM is the format of CDs and is considered a 'loss-less' format and uses a lot of space.
LPCM Multi is multi-channel PCM. That can be 5.1 or 8 channels. It is also PCM - loss-less. But for Blu-Rays, you shouldn't use this, because they are 'Bit-stream'.
LPCM is not 'encoded' but Dolby Digital or AC3 and DTS are. They are send to the receiver via HDMI as bit-stream, which especially applies to HD sound formats like Dolby Tru HD and DTS HD MA. Bit-stream means, that they are send as they are from the player, there is no processing in the player. The bit-stream is then send into the receiver, decoded according the format used - Dolby or DTS - post-processing applied e.g. PLIIx, Neo:X and send to the Digital-Analog-Converters (DACs) and then send to power amplifiers in analog format.
LPCM goes straight to the DACs - more or less.
'Source direct' means the source is not processed in the AVR. On means this and Off means it can be processed.
50 or 100 kHz - I don't know, it's a frequency but I don't know where it could be related to?
AFDM is used if the AVP should choose the decoding mode e.g. Dolby Digital with EX flag. Read the manual page 50 in mine.
Please correct me somebody, if I am wrong.
Hope it helps...
Edited by Ganymed4 - 1/11/13 at 11:34am

















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