Re: [LAU] Open Source Audio Interface (was Successor/replacement for RME HDSP+Multiface?)

On Tue, 2 Sep 2014, Kazakore wrote: It depends on distance, but it has almost no overhead compared to most other formats (besides analog and aes3). It depends on the dsp time used to split it up and route. reading some of the formums dedicated to FOH kinds of things, it seems that yes less than 10ms is possible, but only with loss of channels and very clean network. It is a 3rd level network application, so it uses standard network SW and shares on an equal basis with other traffic. At most it asks for piority. It is like trying to do lowlatency audio with a generic kernel... shutting X and friends off and making sure nothing else really is running can give reasonable latency with only the odd xrun... I read some of the stuff about it. I do not have an AES account. Nor can I afford to buy a list of documents to find out about aes 50, 51, 53, 46? (one of those) and 67. 67 is for more wide spread content gathering from iphones etc. (If I have the right one, I have been reading too much the last few days) The goal is to replace a local audio IF with something that has performance close to FW. With something that can be used on a laptop... even if it runs OSx. Something that can be used on stage as a guitar effect (funny, what we are talking about might be usable as an effect without a host :) or even a softsynth.... though I think a softsynth might do better with a host computer. I had once thought that making an audio IF with enough power, one could add a drive and just use the host as an X server :) Almost all the remarks I got were prefaced with "On any modern computer...". In some ways I almost think taking some old ice1712 chips and connecting them to a PCIe IF might do more. Name your own favourite chip. The only real problem with MADI is that it is hardware specific... old hardware... same as the ice chips, mostly not available. Then there are laptops. None of them have a space for extra cards anymore (internally most of then have a single channel mini-PCIe, but I don't know how easy it is to use for audio). They have USB. So far USB is just barely usable, I don't know if the next generation of laptop will even have an ethernet port, they don't seem to be considered useful on small personal computing devices. In the long run making a more powerful audio IF that can do more of the audio processing... possibly also running the main application, makes sense. In that case we really want that box to be open. -- Len Ovens www.ovenwerks.net