linuxaudio.org

On Sun, 15 Nov 2009 12:57:34 -0500

Paul Davis  wrote:
> i strongly suggest that you spend time defining precisely what you

quoted text
> want the control protocol to be able to do before you start this kind

> of experiment.

Very good point.

Are we still talking about only ethernet soundcards, or is the intent

to roll out to a general audio+control over ethernet?
Also, from bitter experience the overall design needs to be robust

enough to handle hardware changes when parts get obsoleted.
As a start I suggest the following:
query bit depths available

      sample rates

      number of input channels

      number of output channels
perform general initialisation and set all defaults
set bit depth -> 8, 16, 24, ?      (default 16)

set sample rate -> 44.1, 48, 96, ? (default 48)

set unit as clock reference or not (default not)

enable/disable CH'n' input	   (default disable)

enable/disable CH'n' output        (defualt disable)

set CH'n' gain/output		   (default silence)
Disabling a channel is not the same as setting it's level to silence,

as at silence it would still generate output to be fed into the network.

It would make sense to stop any meaningless data transfers.
With a switched binary volume control 7 bits would give you 127dB range

(LSB=1dB) so the 8th bit could be used to simply ground that channel.

I'm not even sure you need to go as tight as 1dB. Fine control would be

done within the DAW anyway.
--

Will J Godfrey

http://www.musically.me.uk

Say you have a poem and I have a tune.

Exchange them and we can both have a poem, a tune, and a song.

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