Linux-audio-user

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20655 discussions

[linux-audio-user] full duplex USB<->SPDIF converter recommendations

by svz

I would like purchase a very simple and straight forward USB<->SPDIF converter and do full duplex streaming (i.e. record sound from SPDIF output device, process the sound in Linux and play it back to SPDIF device in real-time). Would LOVE to know if anyone can recommend any of such devices (esp. from personal experience, for example Edirol/Roland UA-1D or Opcode DatPort appear to be such devices - only do they work on Linux...) USB<->SPDIF converter *must* work in *full duplex* mode (with ALSA generic USB driver or any other if such is available for Linux). If you do have something to recommend, then I would like to stretch your patience and ask you a question regarding the device/model of your choice: considering, that USB<->SPDIF converter is capable of recording SPDIF signal - I presume that it is capable of syncing to incoming input (i.e. otherwise clicks would occur). Also, given that the device is capable of playing to SPDIF device - it is assumable that USB<->SPDIF converter has its own internal clock (i.e. not recording anything, just playing signal back to say a DAT machine which will need to sync to the signal produced by USB<->SPDIF converter, etc.). Would I then be correct in thinking that if such is the case - then there would be some way of controlling whether to use internal clock or to sync to external signal - or would be such decision made automatically whenever deciding to record - USB<->SPDIF converter will lock to incoming signal (in such a case - it is important to know it, because problems could arrise if for instance single DAT machine was used as AD/DA box *and* set to sync to incoming signal - this way DAT machine would try to sync to USB<->SPDIF converter, whilst USB<->SPDIF converter would be trying to sync to DAT machine... pitch shift anyone?) Kind regards, Leon.

22 years, 6 months

[linux-audio-user] external mixer device

by Jan Stary

Hi, is it possible to use an external mixer and have some multitrack mixing app react on what I do with the knobs? I am running alsa 0.9.2 and the 2.5.66 kernel. It's an Acer laptop with one pcmcia slot, two USB ports, one parport and one 'monitor' port Any suggestions for a particular device/app setup? Thanks a lot. Jan

22 years, 6 months

[linux-audio-user] Re: linux-audio-user digest, Vol 1 #390 - 12 msgs

by dan＠easley.com

> From: Steve Harris <S.W.Harris(a)ecs.soton.ac.uk> > > On Tue, Apr 08, 2003 at 09:37:05 -0700, dan(a)easley.com wrote: > > I'm a lurker, currently confined to ...200 MHz Pentium II > > with 32 megs RAM running Win95 and Cakewalk 8. I'm sure I'll be happy with > > whatever latency I happen to get when I buy the new computer and put linux on > it. > > Hmm... not to discourage you but that CPU is not going to be capable of > running the first version of the mastering tool. Its designed to use > linear filters, which are *very* expeensive in CPU time. > > Later it will probably be able to (optionally) use normal IIR filters > which should run OK on slower machines. No, no - I can't get anything to run properly on that machine, and don't expect to. I'd master on my Marantz cassette recorder first! I look forward to trying out the system once I'm into 1+GHz proc. speeds. Rev. Dan Easley Burnt Possum Poets Harrisonburg, VA, USA

22 years, 6 months

[linux-audio-user] fluidsynth and midi device

by Mikhail Ramendik

Hello! I have tried to run fluidsynth-1.0.1 on my Linux system with an ES1371 sound card (i want to attach a MIDI keyboard to the sound card's midi input). But it said that there's no device /dev/midi . There indeed is none, but midi0, midi1, midi2, midi3, midi00, midi01, midi02, midi03 are present. I tried: ln -s /dev/midi0 /dev/midi but this did not help - fluidsynth still says that no device named /dev/midi is available. Is there any way for me to use fluid with my PC's midi input? -- Sincerely yours, Mikhail Ramendik

22 years, 6 months

[linux-audio-user] Re: Mastering app

by Steve Harris

On Tue, Apr 08, 2003 at 02:40:40 +0900, Patrick Shirkey wrote: > Steve Harris wrote: > >On Mon, Apr 07, 2003 at 11:56:16PM +0900, Patrick Shirkey wrote: > > > >>>There will be 3 band compression, linear parametric EQ and a lookahead > >>>limiter, maybe also a learning limiter. > >>> > >> > >>Is that called time? > > > > > > ? > > >>>maybe also a learning limiter. > > :) Ahh, yes time, but also working out a UI for it. Its kinda optional, so I doubt it will make 0.1. > >If your willing to work on the UI, then maybe the thing to do is to strip > >it down and rebuild the UI code. I can stick the current code in a public > >CVS server somewhere (its currently on a private server), but its pretty > >scary in its current state. > > I have no qualms about learning SDL unless you really think it is a bad > idea. The thing is *learning* it but I am willing to drop (almost) > everything and focus on it for a while. Well, theres almost nothing to SDL (well the parts I used anyway), I just dont think its appropriate, I ended up writing widget code for the sliders and stuff, which is why they suck so much. In retrosect just using GTK would have been easier. > If you want I can give you ftp access to djcj.org and you can put it > there in a semi/private place. The intention wasn't that it be especially private, I just didn't think anyone else would want to work on it. I originally wanted to get beta bug reports from a small number of people so I could handle the feedback, but I dont think that will be a problem now. > >I have no particular feelings about what toolkit, as long as its C, and > >preferably has working vertical faders, the ones in GTK-1.x are > >inconvienient. > > I willing to go with the current stuff and work from there. It may be > that it needs a complete redesign but I think it would be good to get > something out sooner rather than later. Thats a good point. The current state is that I'm halfway through refactoring the UI code to make some of the compressor controls rotary, so its impossible to tell what its doing at the moment. The question is wether its quicker to rescue the SDL code or replace it with GTK code or similar. Is there anyone else who wants to work on this? If not I'l just leave the code where it is for now and give Patrick a login on the machine. If there are a few people I'l have to move it to sourceforge or something, but I dont really want to do that cos I think theres going to be some major structural work needs doing. - Steve

22 years, 6 months

[linux-audio-user] Jeux d'orgues 2 clicking on fluidsynth

by Mikhail Ramendik

Hello, I have just got fluidsynth to run on my Linux box. It works fine with most soundfonts. But I ran into a strange problem with "Jeux d'orgues 2", the big organ soundfont which is right at the top of hammersound.net's organ list. It plays, but produces a click on every release of a key! Of course I looked at the output of "top" in a different console, and fluidsynth was only using 10% or so of teh cpu. No other tasks were running (before I started "top"). I can't check it with an SB Live, so I do not know if it is perhaps a problem in the soundfont. But somehow I doubt a soundfont woth such an obvious bug would be up there for so long and the author would not notice. So, can this be a problem with fluidsynth or my system? And, is there a way to check, without access to an SB Live? (Perhaps I should try to install timidity?) By the way, is there any other good organ soundfont available? -- Sincerely yours, Mikhail Ramendik

22 years, 6 months

[linux-audio-user] noteedit-2.1.1(segno issues, double bar)

by Joerg Anders

Version 2.1.1 of the score editor NoteEdit for Linux is available: http://rnvs.informatik.tu-chemnitz.de/~jan/noteedit/noteedit.html New features: - staff context (the actual clef and key signature is shown at the left hand side during replay; configurable) - (again) KDE2/Qt2 compatible Please note: I cannot really test this. For a long run I recommend an KDE3/QT3 update. - double bar - Segno issues (see also "example1.not"): o Segno o dal Segno o dal Segno al Fine o dal Segno al Coda o Fine o Coda Please set these signs in every staff, otherwise ... (don't know ???) Furthermore, it is your responsibiltity to place the signs in a reasonable manner. Otherwise the replay behaviour is undefined. - MUP users: I didn't comprehend some parts of MUP. Thus, I stored some items in a non-MUP-conform manner. As a result some files were not MUP-able. Now I changed some of these parts, among them: o Slurs: I claimed MUP cannot deal with slures which lead over more than 2 notes. This is not true! NoteEdit-2.1.1 now produces a MUP-comfrom representation of such slurs. This holds for the 1st and 2nd voice. From 3rd voice on the representation remains MUP-incompatible. o "lonely" trills: I claimed MUP cannot deal with so-called "lonely" trills (wavy lines without "tr" symbol). But this is not true. NoteEdit-2.1.1 now produces a MUP-comfrom representation of such trills. o Empty lyrics: I claimed MUP cannot deal with partly missing lyrics in a measure. This is not true. NoteEdit-2.1.1 now produces a MUP-comfrom representation of such lyrics. I apologize to the MUP developers for these wrong statements. Before asking this: Of cource, NoteEdit can still read the old representation. So if you want a MUP conform version of some non-MUP-conform "*.not" file simply load the the file an save it again. -- J.Anders, Chemnitz, GERMANY (ja(a)informatik.tu-chemnitz.de)

22 years, 6 months

[linux-audio-user] mastering prorgram features

by dan＠easley.com

hey, all. I'm a lurker, currently confined to recording my albums on a 200 MHz Pentium II with 32 megs RAM running Win95 and Cakewalk 8. I'm sure I'll be happy with whatever latency I happen to get when I buy the new computer and put linux on it. :) In the meantime, I wanted to mention indexing as another nice feature to have in a mastering/burning application, and wanted to mention Wavelab as a program I absolutely love mixing and "mastering" (I'm a geek with a PC - I don't know how to master :) with - it's the only program ever built with that "stuff the thing full of features till there's no screen left" mentality that I've actually liked. So we might glean some ideas from them. (Or not - it can be frustrating to have the pointer change shape and function every 50 pixels or so...) I look forward to contributing more as I can - just got my first full-time desk job, so I get to spend the next few months picking out the perfect motherboard, the perfect case, etc... in the meantime, I'll be Lurking, dan Rev. Dan Easley Burnt Possum Poets Harrisonburg, VA, USA

22 years, 6 months

[linux-audio-user] Is this alsa site down?

by Chris Lyon

is www.alsa-project.org up at the moment? Chris@wyleu

22 years, 6 months

[linux-audio-user] rosegarden-I/O

by Moeflon

Hi everybody, Simple question: I want to use my Evolution USB-keyboard for input with rosegarden. I don't seem to get any midi-i/o, nor any sound comming out of the speakers. (Yes, checked the mixersettings) How can I solve these 2 probs? When I compose the notes manually, I see the small VU-meter next to the channel is moving when playing the track, but in no way I get any soundoutput... Any hints? Karel (alias Moeflon) | -----> the perfect midi-newbie :-p

22 years, 6 months

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Linux-audio-user