mcduman wrote: 
> I know LMS is bit-perfect at 100% fixed volume, but I have the following
> questions:
> 
> 1. there is also an adjustment for remote streams and the default value
> is -5. Is LMS still bit-perfect when I mess around with this setting?
> Should I keep it at 0? Or is it disabled at 100% volume?

AFAIK this is like a Gain tag for specified remote streams. I didn't
think it was applied by default.  LMS does not manipulate any audio
data.  It just works out from volume control, gain setting and 100%
setting - what value to put in volume control message in slimproto. 
Recently this has been tweaked to support balance as there is L & R
volume.  I would think the 100% setting means LMS sets L&R vols values
to max in message.

> 2. How is it normal that roon and LMS are not equally loud at 100%
> volume? because remember roon is simply emulating LMS
You are assuming Roon is doing a perfect emulation of LMS - that is why
I suggest looks at the actual values sent to the player.

> 3. when transcoding to flac from other formats, i see the following
> argument in convert.conf. [flac] -cs --totally-silent
> --compression-level-0 -. why is compression level a thing if the  output
> is exactly the same?
Unsupported formats (e.g. AAC for SB3 players) are converted into a
lossless format - Flac.  This measn AAC is decoded into PCM which has to
be re-encoded into Flac. IIRC Encoding Flac is the CPU heavy part of the
process - decoding Flac is CPU light. So to minimise load on CPU (a few
years ago they used to things like NSLU2 with no FPU in CPU)  the
compression level 0 is used as it requires the least amount of CPU to
encode.

> 4. can you or other knowledgeable members give roon a spin and comment
> on their implementation of LMS?
Not me. (too much other stuff on & to do) but that doesn't stop other
users.


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