32 HMX6801+B2/C2 and HMX6801+B4/C4 Installation and Operation Manual
Chapter 3: Operation
Non-PCM Processing
Compressed non-PCM audio signals cannot be summed and averaged
out. Therefore, if you select one of these options, the sources that
appear in the Out01Src to Out08Src parameters are arbitrarily matched
odd/even to left/right.
Example:
AES 1A and AES 1B inputs are of a non-PCM format, and AES 1 Sum
is selected for the Out01Src and Out02Src parameters. Since the
Non-PCM channels cannot be summed and averaged, then the output
channel assignments are as follows:
• Out01Src is assigned AES 1A (matched Odd number to Left
channel)
• Out02Src is assigned AES 1B (matched Even number to Right
channel)
When channels are operating in Non-PCM mode (for example,
compressed audio such as Dolby-E mode), the following parameters are
disabled for the associated channel:
• Gain (forced to 0 dB)
• Invert (forced to No)
• Dithering (forced to None)
• Word Length (forced to 24-bits)
See “Cross-Functional Parameter Changes” on page 33 for full
parameter descriptions.
When operating an output channel in Non-PCM mode, the sample rate
conversion function of the associated input AES channel is bypassed.
These parameters are enabled
for channels operating in PCM
mode.
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