Jeremy Nicoll <jn.ml.dbn...@letterboxes.org> writes: > On Mon, 7 Aug 2017, at 23:41, Rodolfo Medina wrote: > >> Fascinating...! But now I got very interested in the multi channel audio >> interface you suggest... Before looking for one to buy, I'd like to >> better >> know and understand how it works... > > They're just boxes which can have more than two mics (or line-level signals > eg from instruments) plugged into them. Inside there's multiple analogue- > to-digital converters. The digital data from all of these is then sent along > the USB connection to the computer. Some interfaces might send all the > channels so they arrive in a single file on the computer, which then contains > multiple separate channels, others may directly generate separate files on > the computer. > > It's unimportant which you get because a file containing multiple channels > can be split into separate files (with eg sox), or a set of files can be > combined (with eg sox). > > > I can't advise you on what to buy... because I suspect you're going to spend > a great deal less than I did when I last bought one... That was a Tascam > box: > > http://tascam.com/product/us-2000/ > > which you'll see can handle 16 separate inputs at once... There's a more > recent version of that these days... A box like that is aimed at people used > to using professional audio equipment.
Your explanation is just what I was looking for... Very simple and clear. Here: https://stackoverflow.com/questions/14950823/sox-exe-mixing-mono-vocals-with-stereo-music it is shown how to operate with sox the way you said. > There will be lower-spec interfaces around too, but you obviously need to > find one that's known to work with linux. You also probably don't want one > with eg XLR sockets for mics. Yes, as far as I understand this is probably the main problem: find something that works with Linux... Thanks indeed, Cheers, Rodolfo
