Linux-audio-user

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20662 discussions

by David Jones

On Feb 14, 2015 5:48 AM, Len Ovens <len(a)ovenwerks.net> wrote: > > On Sat, 14 Feb 2015, anders.vinjar(a)bek.no wrote: > > > The real pain here is having to do 32-bit at all! If we only got lw to > > consider 64-bit a 'professional' feature, and not just a high-end > > 'enterprise' feature... :-/ Even my wife's years-discontinued little netbook is 64-bit. > With some distros talking about dropping support for 32bit kernels, 64bit > is just where the world is going anymore. 32bit versions are just > outdated. > > As someone who uses old computers for servers etc. I find this anoying... I do wish kernel makers would also stop requiring PAE support. I have a couple of boxes that don't support PAE. Musix is 32-bit only. I expect Debian will be producing 32-bit kernels for a good long while yet. They just seem to change slower than others. David W. Jones gnome(a)hawaii.rr.com authenticity, honesty, community http://dancingtreefrog.com

10 years, 7 months

Preparing for and going to LAC 2015

by Carlos sanchiavedraz

Hello dear all. Just wanted to ask if anyone is arriving at around 9:30 to T2 at Frankfurt (FRA); I would be glad to share the journey to Mainz (hopefully it's relativelly easy to get there from the airport). Or anyone the night before for hours at T1 Barcelona (BCN). Also one more question. It's probably that I can't take a laptop with me (I have issues with the one I'm testing and don't know if there are problems with so many check points you have to pass travelling by plane nowadays). I think there's a lot to learn, hear and talk at LAC, but I guess it's better with some device. So I wanted to ask if there's something like an internet lounge at the University in case I needed some connection. Looking forward to see you all, folks. Regards.

10 years, 7 months

Re: [LAU] Preparing for and going to LAC 2015

by Carlos sanchiavedraz

2015-04-07 17:25 GMT+02:00 Rui Nuno Capela <rncbc(a)rncbc.org>: > On 04/07/2015 01:37 PM, Carlos sanchiavedraz wrote: > >> Hello dear all. >> >> Just wanted to ask if anyone is arriving at around 9:30 to T2 at >> Frankfurt (FRA); I would be glad to share the journey to Mainz >> (hopefully it's relativelly easy to get there from the airport). >> >> > Carlos, > > i'm arriving on FRA T1 on Wed 8, about 12:30 local time, then pick up car > hire and drive to Mainz no later than perhaps 14:30 > > say whether it fits your time frame/window... > > i'll be glad to have you or any1else in good old fifo fashion:) on board > over those 60km or so ;) > > cheers > -- > rncbc aka. Rui Nuno Capela > > So sorry, Rui and all, so bussy I forgot to mention that it was actually Thursday 9 at 9:30 (and the night in BCN will be this night 8-9 april). It makes so sad because it would be an absolute pleasure to share those 60kms. Thanks so much anyway. See you soon (hopefully :) ) -- C. sanchiavedraZ: * NEW / NUEVO: www.sanchiavedraZ.com * Musix GNU+Linux: www.musix.es

10 years, 7 months

New song and new Ardour project available

by Massimo Barbieri

Hi, today we have published the video of another single of John Option: You failed. Of course the song is published under the terms of the Creative Commons License (CC-BY-SA) and it's completely produced only with free software: Ardour, Hydrogen, Jack, Qsynth, CALF, and many other great free audio software that we used under Debian GNU/Linux. Here you can listen the single: https://youtu.be/Ky0y3IipG8c As for the previous songs we have done a little more in the direction of freedom and we published in our website[1] the single recording tracks and the complete Ardour session. All this material is published under the terms of the Creative Commons license Attribution Share alike so that anyone can use our tracks to produce a remix of our song or even a new song that have to be published under the same license. You can find all about our project here: http://johnoption.org I hope that you like our choice of freedom. If you feel like I'd love to read your feedback, because the encouragement of the people who listen to us and appreciate the philosophy of our project is the only fuel for us to continue. And if you like to be updated about our next release, please subscribe to our YouTube channel or any other social network you like (see link to our profiles on our website[1]). Best regards, Max-B 1. http://johnoption.org

10 years, 7 months

News - New interfaces Motu (AVB linux status ?) - Arturia Audiofuse - Anyone tested those ?

by OvO OvO

Hello. Motu as lauched a new audio interface.http://www.motu.com/products/avb/ultralite-avb The specs tells that it's «USB 2.0 audio class compliant»And what surprise me (i was dreaming of this since for ever) the mixing software is inside the hardware accessible from a web browser ! No more windows/mac app mandatory ! (i hope) « WEB APP Support : Any web client platform: Mac, Windows, Linux, iOS, Android» Linux written on a motu web page specs product... i should be dreaming.... The specs talks also of AVB. Someone knows the status of this under linux kernel ? Anyone had a chance to try this new Motu interface ? Also : Arturia lauches an Audiofuse audio interface.http://www.arturia.com/audiofuse/overview A lot of input/output and... «USB interface with PC, Mac, iOS, Android & Linux compatibility»Linux in the specs ! The same here : Anyone had a chance to try this ? Best.

10 years, 7 months

If you don't like Behringer...

by Len Ovens

If you don't wish to use a Behringer mixer like the X32 and want something similar in the same price range, the Allen & Heath Qu series is very similar. The USB interface is reported to just show up in ALSA[1] and while the remote control stuff does not come with Linux support, All the remote control stuff is midi and completely documented. (I have waded through it) There have been Android remote control applets written for it (well the QU16 which has been around the longest) and it understands rtpmidi it seems. Despite some of the reports that the internal effects (channel strip/insert effects) can not be inlined with the USB IF, looking closely at the manual seems to indicate that these people have used the default settings and there are other settings that would allow the "direct out" to be selected from more than one place in the channel strip (post pre, post insert, post eq, post compressor and post delay). While there is no post fade, the direct out has both a trim level and the ability for the level to "follow" fade and/or mute. Direct out placement selection is global. Of course all of these settings are not in the same place :P The Direct out source is on the Channel routing screen, while the Insert/directout selection is on the USB audio screen... and the default point for the direct out would make it behave just like the Insert selection. I do not know what latency this would add to a track, but the DAW should be able to compensate for that anyway. At the least, the talent would be able to have a live/effected monitor of themself and other tracks. On the plus side for the Qu mixers, up to 18 sources can be recorded direct to USB disk (this same limit of 18 is there even on the Qu32 which can send 32 sources to USB AI). This means that carting a computer along to a gig to record is not needed if you would be using the unit both for recording and on the road. This can be used for preliminary sound checks of all channels/monitors with no band in place. (The X32 can only record 2 tracks to USB disk BTW) The 18 WAV files could then be imported into one's favourite DAW from USB drive for mixdown if desired. There are scene memories so having a setup for recording as well as performing (more than one venue) is possible. In all my searching I have not seen complaints about the A & H line of products in terms of reliability or audio "funnyness". The i/o do not have transformers (not in this price range) so grounding needs the same care as always. The big difference from the X32 series to the QU is that the smaller X32 like the Producer with 16mic pre can control up to the same 40 inputs as the full X32. The Qu series mixers will only control the number of channels they have connectors for. These i/o can be replaced by digital snake i/o if desired. This shows in the channel strip layout on the two boxes. The X32 channel strips are broken into two sections with one for input strips and one for bus strips. So the input strips can only be seen in banked/layered mode. The Qu series has a strip per input with a layer switch to see the bus strips, both have a master strip as well. The Qu also has a custom layer to set as the user wishes. There is enough info in the MIDI spec to set up a MIDI map for use with a DAW (Ardour for certain). [1] http://community.allen-heath.com/forums/topic/ardour-linux-qu32-usb-recordi… http://ubuntuforums.org/archive/index.php/t-2262870.html -- Len Ovens www.ovenwerks.net

10 years, 7 months

zoom r16/r24

by Atte

Hi A year ago we discussed the possibility to get the zoom r16/r24 working as audio interface. Here's the last part of this discussion: http://linux-audio.4202.n7.nabble.com/re-Zoom-R16-td87487i60.html#a89729 Any news? Anyone still pursuing this? I'm still hoping for duplex, but reliable recording or playback would be a start... Cheers -- Atte http://atte.dk http://a773.dk

10 years, 7 months

fader mapping

by Len Ovens

Fader mapping in general has been tied to the phyisical fader and it's length. 4in/100mm seems to be the max real estate people want to use. Ok so far. The mapping is set up to use that 4in in the best way possible, but seems to be the same no matter what the use. There are three main uses I can see: Broadcast - Fades to oo(off) happen often Live Mix - Fades might happen once in a performance (maybe 2 or 3) recording - Fades are more often done with some kind of automation maybe never on a physical fader... or maybe only on bus faders. Assuming a recording/mixdown situation, would it make sense on a limitless fader to continue at the same db drop per movement from +6(or 10 or whatever) to -110? My reasoning is this: By recording, I mean DAW and so 32bit float derived from 24bitADC. Tracks are therefor recorded with more headroom and less compression as these can be dealt with later. DAWs do not seem to think in terms of a channel strip trim at input so that each track can put the fader in it's most acurate possition (right around 0db) and something loud that is really background may end up with it's fader position quite low. This would mean minor adjustment to that track would be difficult. Would it make sense to be able to move the range of a fader (physical or other wise) so that it goes from -10 to oo rather than from +10 to oo? Think put one finger on a modifier key and then move the fader from where the signal is to where on the fader strip you want it then release modifier key. SO if the fader is at -20 and this was done, -20 would now be at the 0db possition. Or if using a mouse wheel, the same amount of wheel clicks would move the same db at any place on the fader... or a new type of fader might make this possible too. The thing is, a fader is no longer an audio pad that can be adjusted, it is a data input device and as such it just has a linear position output. There is no reason that data and it's meaning can't change on the fly as needed. For most mixing (even live) the fader input is either "I need more of that" or "I need less of that". In such a case, the sound the engineer hears is what they go by, not the fader position. If the fader position has to be looked at to change it takes the engineer's mind away from the mix momentarily rather than if the operation position is always the same. I am thinking what would work for a blind person, and wouldn't that be better even for someone with sight? With the talk about the X-air etc. not too long ago, I have played around with the remote (PC and Adroid) mixer apps and the faders work in such a way that touching (clicking) on any part of the fader and moving will take the current value and mov it in the direction the finger/mouse is moved (Ardour3/4 and maybe 2) are the same. In my opinion this is the right way. Most touch surfaces either require the finger to touch where the control is right now before it will move (second best) or will jump to where the finger hits... bad or the worst ones are ones where the fader does not move till your finger gets to the control, but moves as soon as the finger touches any part of the control which means that a finger moving from bottom to top has the fader position jump down so the middle of the fader control is at the finger as soon as the finger gets to the bottom of the fader control and then start moving up. (just plain broken) Actually, fading to oo would still be possible on the solutions I have mentioned so far. Seems win/win. Another softkey could be used for reset modifier. Another solution might be to use a modifier key to make the fader set a channel trim. This could be a good solution too or even as well. I would think once someone has set up their channel strip with things like compression (or anything level dependant) they would not want change the input level though. I am working on a control surface where the brain is a small Linux box. I have been looking at different well known protocols like MCP and HUI as well as what some of the digital mixers use (the ones that are open about it). I am thinking about how I would want to control a DAW if I have control of what I am doing. I am interesting in ways that a remote application either via MIDI or OSC can find out what plugins a channels has in it and therefore what are it's controls I can play with. I would like to have an Android app that shows the current channel (as selected by the control surface) strip plugins as a set of tabbed pages with each tab showing a control GUI for that plugin. (wifi based of course) The way Allen & Heath have done it for their digital mixers is nice, but for a DAW where each channel may be different and there may be more than 4 plugins, it is probably not the right solution... the GLD is close though. -- Len Ovens www.ovenwerks.net

10 years, 7 months

Re: [LAU] multichannel interface recommendations?

by Jeff Sandys

> > Date: Tue, 31 Mar 2015 09:39:01 -0600 > From: Studio Channing <studiochanning(a)yahoo.com> > Subject: [LAU] multichannel interface recommendations? > Message-ID: <551ABF95.2040606(a)yahoo.com> > > we are searching for a new audio interface for a project studio and > interested in the experiences others have had > > requirements are: > * 8 (or more) channels simultaneous recording to computer > * at least 4 preamps for mic level inputs > * USB2 preferable to Fireware, but.. > * 100% linux compatible, ideally with a stock kernel > * under $500 USD if possible > > less important is real-time monitoring functionality - this will mostly > be used for bands playing live > ... > anybody have any recommendations I have been looking for a similar device, 4 mic inputs to record a string quartet, and bought a Focusrite Scarlett 18i8. I haven't used it for recording yet but I did plug it into my Fedora 21 mini computer, started qjackctl and all the inputs and outputs were exposed. It has 4 front panel mic inputs, 2 can be switched* to line, 48v phantom on each pair, 4 TRS balanced inputs in the back, S/PDIF in and out, and ADAT optical in for an additional 8 channels in, 2 balanced channels out on the back with 2 stereo (headphone) outs on the front, plus midi in and out. It lists at $400 at several online retailers, I bought mine used on ebay. There is an windows and mac mixer app, and you need to use the app to switch the two channels from mic/line to instrument and change other configurations. Focusrite states that they don't guarantee Linux compatibility but they have published enough interface information that at least two programmers have created Scarlett Mixer python apps on Github, one is by Linux audio guru Robin Gareus. With the program you can assign the headphone output as zero latency input monitoring or as output from your computer. http://us.focusrite.com/usb-audio-interfaces/scarlett-18i8 https://github.com/x42/scarlettmixer https://github.com/trrichard/ScarlettMixer It seems to have solid stage worthy construction and a power supply with US, UK and Euro plugs. -- Jeff Sandys

10 years, 7 months

Re: [LAU] multichannel interface recommendations?

by Fabrizio Sciarra

I understand my answer doesn't fully apply to your request but, if of any interest to you, I'm currently happily using a Mackie 820i mixer, connected via firewire with jack and ffado. It has only 3 mic inputs, alas. It features 8 inputs and 2 outputs. The use of firewire and tape outputs might result not immediate, or at least it didn't to me, but can be arranged to supersede some input channels or mix in the "control room" via some routing buttons but loosing volume control. If you can afford it I might suggest a wider 1220i. Best regards Fabrizio

10 years, 7 months

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Linux-audio-user