Adrian Knoth: > On Mon, Nov 23, 2009 at 08:28:03PM +0000, Folderol wrote: > > > The rationale in brief: > > No proprietry hardware soundcard needed. > > Almost all modern computers have reasonably fast Ethernet connections. > > Don't know how much you already did for the hardware layout. If > possible, try to avoid analog stuff, that is, ADC/DAC.
You don't say why we should avoid analog stuff. For me the whole point of doing this is the analog stuff. ... > I'm also somewhat interested in the network part, I feel IPv6 could help > a lot. It supports autoconfiguration and it has decent multicast > support, so it would be possible to broadcast/multicast the streams on > the net (LAN). This could be useful if you want to access the stream at > a mixing console for a life setup and simultaneously record it on a > computer. At a live recording you probably have only your own gear connected to the lan. In that case you can easily assign ip-adresses at will and to your own taste. I don't see how IPv6 vs. IPv4 could matter at all. > That's basically what Roland's Digital Snake offers: an onstage Ethernet > (not IP) soundcard and one or more remote devices. RockNet provides > similar stuff, there's also Ethersound, but RockNet is PC-incompatible > (400MBit/s proprietary protocol), Roland is undocumented and I don't > know nothing about Ethersound. ;) That tells us that it should be doable. But of cause we want an open protocol. Do you know the capacity limits of thoose systems ? > I also have some fancy Xilinx boards with onboard ethernet, an audio > codec (including the analog jacks) and a FPGA. Though it's way harder to > mimic all the features with VHDL, it could provide stable timings. The > boards also support memory, so it would be possible to load a softcore > and run Linux on them. Doing things with a fpga would certainly be interesting, but I cannot do it for the moment. Perhaps you could provide designs we could include... > If you like, feel free to Cc me or join #lad if you think I could > contribute something. I assume you are on the list, so I only send on the list. Regards, /Karl ----------------------------------------------------------------------- Karl Hammar Aspö Data k...@aspodata.se Lilla Aspö 148 Networks S-742 94 Östhammar +46 173 140 57 Computers Sweden +46 70 511 97 84 Consulting -----------------------------------------------------------------------
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