Linux-audio-user January 2005

linux-audio-user@lists.linuxaudio.org

207 participants
246 discussions

by Iain Duncan

Just wondering if anyone has gotten solfege to work with either external midi ports, virmidi, or a soft synth using alsa and not oss. I have been struggling with getting it to play to my midi port or to virmidi, and have no clue how to select the device properly. There is little explanation as to what the options in the set up area mean. I'm on gentoo. Thanks iain

19 years, 10 months

Re: [linux-audio-user] Decent reverb, and DSP in hardware?

by davidrclark＠earthlink.net

Greetings All, I have recently posted to LAA an announcement of Mixster and other programs. These are aimed specifically at convolution reverb. They run under Linux, and with the appropriate libs, under XP which is where I will probably use them. The program called "Boxster" is for generating 3-D impulse response functions. The program called "Mixster" is for convolution, albeit nonrealtime, and for combining the tracks. It has other utilities which are useful for performing tasks associated with convolution reverb. To novice users, I'm sure it appears to be a miscellaneous grab-bag; it's not. ----------------------------------- Boxster uses Green's functions rather than ray-tracing for generating the IR's. This is a complete solution --- as complete as the finite number of samples allows --- for the ~3 billion modes in a typical concert hall. The walls are hard, but I have myself developed techniques for engineering the IR's so that they sound very realistic. I have a set of IR's that I have used for about two years now that I would be willing to share. This technique requires monophonic, dry recordings, not what people are used to. The programs are not especially easy to understand, but I'm willing to work with serious users and eventually hope to create more docs, help, and probably yet another interface. I believe that the current interface is useable by anyone who has ever solved an ODE or PDE. Steve Harris mentioned that the code for convolution is pretty easy. That's true. The hard part is engineering IR's. That is the purpose of Boxster as well as the tools that are included in Mixster. This is anything but easy, but even simple-minded approaches produce better reverbs than most DSP techniques. Several posters have suggested that a few good reverbs would be very helpful. The more I work with this, the more I think that this really is not true. Just as there are many different types of drum sets, there will probably be many different types of reverbs. As people get used to good reverbs, I think they'll become even more discriminating and want more variation. The variations will become harder and harder to distinguish for novice listeners, but more and more obvious to experienced ones. The drivers for the technology will be the discriminating engineers and listeners, not the novices. I'm amazed at just how different various IR's can be when applied to the same recording, even though the rooms are similar. There is a completely different "feel" for each one. For those who are really serious about reverb: Please don't hesitate to contact me. I'd be happy to improve the programs; they definitely need some more docs and probably yet-another-interface. All I can say is that the command-line versions were a lot worse. Thanks for your attention. I would not have posted if someone had mentioned these programs, even if only to complain about them! But no one did (that I saw). Regards to all, Dave. http://home.earthlink.net/~davidrclark

19 years, 10 months

[linux-audio-user] Music

by Robert Jonsson

Hi all, The music threads seems to have died of for the moment, we can't have that can we? :) I've uploaded some more music at: http://spamatica.se/music/ . I guess it would suffice to say that I lack direction ;-P ... Last added are (as the dates suggest): Last Warning - A short techno tune Make it another day - Strange, slow guitar rock Dawn in Paradise, Some kind of slow motion synth...whatever...it's just music All was done with MusE + various other softwares, Jamin etc. Hope you like them! /Robert -- http://spamatica.se/music/

19 years, 10 months

[linux-audio-user] Reverb

by matt＠tinysongs.com

Just chiming in on the reverb subject. I have Pro Tools and Digital Performer with a host of stock and VST reverbs but I like my linux reverbs an awful lot. The ladspa version of Gverb is nice I think but one of the best, though you have to process it off line, is from DAP. http://www.cee.hw.ac.uk/~richardk/ I like to make a separate stereo track of my carefully tweaked DAP track and mix it in with the original. Just my $.02. Matt Quoting linux-audio-user-request(a)music.columbia.edu: > Send linux-audio-user mailing list submissions to > linux-audio-user(a)music.columbia.edu > > To subscribe or unsubscribe via the World Wide Web, visit > http://music.columbia.edu/mailman/listinfo/linux-audio-user > or, via email, send a message with subject or body 'help' to > linux-audio-user-request(a)music.columbia.edu > > You can reach the person managing the list at > linux-audio-user-owner(a)music.columbia.edu > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of linux-audio-user digest..." > > > Today's Topics: > > 1. Re: M audio delta 44 (David) > 2. RE: RME Multiface with ALSA 1.08 (Ivica Ico Bukvic) > 3. Re: Decent reverb, and DSP in hardware? (Joe Hartley) > 4. Re: Decent reverb, and DSP in hardware? (Jon Morin) > 5. Re: Decent reverb, and DSP in hardware? (Steve Harris) > 6. Re: dssi segfault (Walco) > 7. Re: Decent reverb, and DSP in hardware? (Mark Constable) > 8. Re: RME Multiface with ALSA 1.08 (Christian Schumann) > 9. Re: Decent reverb, and DSP in hardware? (Steve Harris) > 10. RE: RME Multiface with ALSA 1.08 (Frank smith) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Wed, 26 Jan 2005 01:25:24 +0100 > From: David <dplist(a)free.fr> > Subject: Re: [linux-audio-user] M audio delta 44 > To: A list for linux audio users <linux-audio-user(a)music.columbia.edu> > Cc: eviltwin69(a)cableone.net > Message-ID: <20050126012524.52276f6c.dplist(a)free.fr> > Content-Type: text/plain; charset=US-ASCII > > On Tue, 25 Jan 2005 18:21:23 -0500 > Eric Dantan Rzewnicki <rzewnickie(a)rfa.org> wrote: > > > On Tue, Jan 25, 2005 at 10:07:34AM +0000, Tobiah wrote: > > > >If you wonder why > > > >the 1010lt is so much cheaper per channel: it has the DA/AD's on > > > >board while the 44, 66 and 1010 [without lt] have them in a > > > >breakout box which should help keeping noise out.. > > > > I'm pretty sure the da/ad on my 66 lives on the pci card. > > You're right. And the optional Omni I/O preamp/breakout box is an > analog-only device, like a miniature mixer. > > It works great here in my system, thanks to the ALSA developpers and > the fine attitude of the manufacturer. > > > But, I only make noise, so I can't say anything about how much that > > detail affects the quality of my work. > > -- > > Eric Dantan Rzewnicki | Systems Engineer I > > Technical Operations Division | Radio Free Asia > > Have a nice day. > > -- > David > > > ------------------------------ > > Message: 2 > Date: Tue, 25 Jan 2005 20:46:45 -0500 > From: "Ivica Ico Bukvic" <ico(a)fuse.net> > Subject: RE: [linux-audio-user] RME Multiface with ALSA 1.08 > To: <Martin.Wohlleben(a)gmx.de>, "'A list for linux audio users'" > <linux-audio-user(a)music.columbia.edu> > Message-ID: <20050126014303.RRBB4914.gx5.fuse.net@64BitBadass> > Content-Type: text/plain; charset="windows-1250" > > Similar problem here except probably worse. Nando has also reported similar > issues on alsa-devel list. I'd suggest voicing your concerns there as to the > best of my knowledge the hdsp stuff is broken in 1.0.8. > > Best wishes, > > Ivica Ico Bukvic, composer & multimedia sculptor > http://meowing.ccm.uc.edu/~ico/ > > > > -----Original Message----- > > From: linux-audio-user-bounces(a)music.columbia.edu [mailto:linux-audio- > > user-bounces(a)music.columbia.edu] On Behalf Of Martin Wohlleben > > Sent: Tuesday, January 25, 2005 1:15 PM > > To: A list for linux audio users > > Subject: [linux-audio-user] RME Multiface with ALSA 1.08 > > > > Hello, > > > > is anybody using ALSA 1.08 with a RME Multiface over Cardbus interface? > > I'm currently working with a SUSE Kernel 2.6.5 and tried a SUSE Kernel > > 2.6.8 > > too. > > The Kernel 2.6.5 work's fine with ALSA 1.03 but after an upgrade to ALSA > > 1.08 > > I got problems with the hdspmixer from alsa-tools. > > The same problem occured with SuSE's 2.6.8 Kernel from SuSE 9.2 - even > > without > > an update to ALSA 1.08. > > After the upgrade the peaks of the first 7 analog channels jitter and the > > RMS > > values (calculated by Multiface) aren't updated right. > > The sound is ok but the hdspmixer problem is real annoying. > > > > Anybody who got his Multiface working with ALSA 1.08? > > > > -- > > No virus found in this incoming message. > > Checked by AVG Anti-Virus. > > Version: 7.0.300 / Virus Database: 265.7.4 - Release Date: 1/25/2005 > > > > -- > No virus found in this outgoing message. > Checked by AVG Anti-Virus. > Version: 7.0.300 / Virus Database: 265.7.4 - Release Date: 1/25/2005 > > > > > ------------------------------ > > Message: 3 > Date: Tue, 25 Jan 2005 21:02:16 -0500 > From: Joe Hartley <jh(a)brainiac.com> > Subject: Re: [linux-audio-user] Decent reverb, and DSP in hardware? > To: A list for linux audio users <linux-audio-user(a)music.columbia.edu> > Message-ID: <20050125210216.1b1a0e42.jh(a)brainiac.com> > Content-Type: text/plain; charset=US-ASCII > > On Tue, 25 Jan 2005 09:28:56 -0800 > Florin Andrei <florin(a)andrei.myip.org> wrote: > > Anyway, i'm pretty disappointed with the software reverbs available on > > Linux. Myself, i resigned for the moment to hardware reverb: > > > > http://www.tcelectronic.com/M-OneXL > > > > It's not convolution but it's actually pretty damn good (and very > > flexible). > > I still go to a rack of outboard gear for a number of my effects, including > compression and reverb. I use a t.c. M300 which also has a multi-effect > channel. > > > Anyway, yeah, we need much better reverbs on Linux. We're lagging behind > > a lot in that area. > > There's been some good work done by folks so far, but yes, this is true. > -- > ====================================================================== > Joe Hartley - UNIX/network Consultant - jh(a)brainiac.com > Without deviation from the norm, "progress" is not possible. - FZappa > > > ------------------------------ > > Message: 4 > Date: Tue, 25 Jan 2005 22:30:21 -0500 > From: Jon Morin <jon.j.morin(a)gmail.com> > Subject: Re: [linux-audio-user] Decent reverb, and DSP in hardware? > To: A list for linux audio users <linux-audio-user(a)music.columbia.edu> > Message-ID: <89c1e77d0501251930590abef1(a)mail.gmail.com> > Content-Type: text/plain; charset=US-ASCII > > I actually just started using ecasound, and it can do some pretty cool > things. I'm still looking for that "perfect" reverb, but I'm > constantly amazed by the depth and variety of audio software available > for Linux. I do a lot of non-realtime stuff, so ecasound, csound, > Audacity, apps like that are very useful to me. I love being able to > script things like ecasound, and it's just awesome the number of ways > (different ways from other platforms) that these tools can be used. I > understand that audio on Linux is still a maturing platform, and my > prediction is that in a year, I won't be wanting for much when it > comes to my dream Linux studio. My hats off to all of the Linux audio > developers. > > Jon > > > ------------------------------ > > Message: 5 > Date: Wed, 26 Jan 2005 08:32:22 +0000 > From: Steve Harris <S.W.Harris(a)ecs.soton.ac.uk> > Subject: Re: [linux-audio-user] Decent reverb, and DSP in hardware? > To: A list for linux audio users <linux-audio-user(a)music.columbia.edu> > Message-ID: <20050126083222.GC18853(a)login.ecs.soton.ac.uk> > Content-Type: text/plain; charset=us-ascii > > On Tue, Jan 25, 2005 at 07:16:42 +0000, Frank smith wrote: > > Hi All > > > > Can we use VST plugins with any Linux apps? > > Only those that use a vst loading libarary or support dssi plugins. > > However this is not really a solution, your still running propreitary, > windows code. One or the other is probably not too bad, but both? :) > > - Steve > > > ------------------------------ > > Message: 6 > Date: Wed, 26 Jan 2005 09:46:17 +0100 > From: Walco <walco-linux(a)n--tree.net> > Subject: Re: [linux-audio-user] dssi segfault > To: A list for linux audio users <linux-audio-user(a)music.columbia.edu> > Message-ID: <41F758D9.5020703(a)n--tree.net> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > Steve Harris wrote: > > On Mon, Jan 24, 2005 at 02:46:08 -0800, Matthew Allen wrote: > > > >>I have been trying to get dssi up and running on my machine this > >>afternoon and I have run into a snag. It appears to compile correctly > >>(both CVS and tarballs). But whenever I try to do the tests I get a > >>segfault. I know its some user error, but its difficult to track down > >>with only a segfault. > >> > >>Is there a common mistake I am doing? > > > > > > Segfaults are (almost) never due to user errors. Unless you did > > something truely wierd or forced an install its the developers fault :) > > > > It could be that your system networking config is a bit odd. Verisons of > > liblo < 0.16, which the DSSI test code depends on, segfaulted under some > > condititons. > > > > Unfortunatly I cant remember the fix, but hopefully someone here can... > > IIRC, make sure that the name reported by hostname(1) is in the > /etc/hosts file. Otherwise liblo would segfault when trying to launch a > new server. > > Cheers, > Walco > > > ------------------------------ > > Message: 7 > Date: Wed, 26 Jan 2005 18:52:38 +1000 > From: Mark Constable <markc(a)renta.net> > Subject: Re: [linux-audio-user] Decent reverb, and DSP in hardware? > To: A list for linux audio users <linux-audio-user(a)music.columbia.edu> > Message-ID: <41F75A56.8020103(a)renta.net> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > Steve Harris wrote: > >>Can we use VST plugins with any Linux apps? > > > > Only those that use a vst loading libarary or support dssi plugins. > > > > However this is not really a solution, your still running propreitary, > > windows code. One or the other is probably not too bad, but both? :) > > So what is the best path of action to ensure we have > access to professional quality reverb sometime this > century ? > > What are the possible options? > > --markc > > > ------------------------------ > > Message: 8 > Date: Wed, 26 Jan 2005 10:22:44 +0100 > From: Christian Schumann <schumann(a)physik.uni-kl.de> > Subject: Re: [linux-audio-user] RME Multiface with ALSA 1.08 > To: linux-audio-user(a)music.columbia.edu > Message-ID: <20050126092244.GA28555(a)diller-5.physik.uni-kl.de> > Content-Type: text/plain; charset=us-ascii > > On Tue, Jan 25, 2005 at 08:46:45PM -0500, Ivica Ico Bukvic wrote: > > Similar problem here except probably worse. Nando has also reported similar > > issues on alsa-devel list. I'd suggest voicing your concerns there as to > the > > best of my knowledge the hdsp stuff is broken in 1.0.8. > I have my HDSP Digiface working with ALSA 1.0.8 under linux 2.4.27, but > last night I tried to get it working with 2.6.11rc2-RT, which was to no > positive result. So to me it seems that this is a compatibility issue > with ALSA 1.0.8 and kernel 2.6, because it works with 2.4 > > Regards > Christian > > -- > ------------------------------------------------------------------------ > Dipl.-Phys. Christian Schumann |Technische Universitaet Kaiserslautern > Mail: schumann(a)physik.uni-kl.de | Fachbereich Physik > Tel.: 0631/205-4842 | http://www.physik.uni-kl.de > Fax.: 0631/205-3902 | > Post: Erwin-Schroedinger-Strasse, D-67663 Kaiserslautern > ------------------------------------------------------------------------- > > > > ------------------------------ > > Message: 9 > Date: Wed, 26 Jan 2005 09:34:13 +0000 > From: Steve Harris <S.W.Harris(a)ecs.soton.ac.uk> > Subject: Re: [linux-audio-user] Decent reverb, and DSP in hardware? > To: A list for linux audio users <linux-audio-user(a)music.columbia.edu> > Message-ID: <20050126093413.GA19885(a)login.ecs.soton.ac.uk> > Content-Type: text/plain; charset=us-ascii > > On Wed, Jan 26, 2005 at 06:52:38 +1000, Mark Constable wrote: > > Steve Harris wrote: > > >>Can we use VST plugins with any Linux apps? > > > > > >Only those that use a vst loading libarary or support dssi plugins. > > > > > >However this is not really a solution, your still running propreitary, > > >windows code. One or the other is probably not too bad, but both? :) > > > > So what is the best path of action to ensure we have > > access to professional quality reverb sometime this > > century ? > > Well, I'm not a reverb expert, but my impression is that convolved reverbs > are the way to go*. The actual code is relativly simple, and we allready > have open source examples, and its possible for people with decent > recording equimpent and access to spaces with interesting acoustics, or > artificial reverb units to capture thier own impulses. They can also be > synthsised using a method similar to raytracing. > > The downside is that the parameters you can control are very limited, and > it burns quite a lot of CPU power, and there can be latency. The upside is > that the sound can be very good. > > There is an obivious technique to prevent any latency problems, but bits > of it are probably patented by Lake DSP, though the situation is a bit > murky. > > If I had more time I'd like to take the code in brutefir and make it into > a DSSI plugin with a simple dropdown select-an-impulse, set gain type > interface. > > I have a sizeable library of impulses, but unfortuantly I dont know the > provenance of many of them. > > - Steve > > * In the interests of full disclose, I have an addiction to convolution > that should be decalred :) > > > ------------------------------ > > Message: 10 > Date: Wed, 26 Jan 2005 10:14:10 +0000 > From: Frank smith <hg(a)web-links.net> > Subject: RE: [linux-audio-user] RME Multiface with ALSA 1.08 > To: A list for linux audio users <linux-audio-user(a)music.columbia.edu> > Message-ID: <1106734450.4660.12.camel(a)bear.rokpa> > Content-Type: text/plain > > HI I to had a the same problems with my RME card on Alsa and FC3. > I can see the HDSP Icon on Gnome along with the config icon but it > doesn't do anything. > > Cheers > Bob > > > > > > > > > > > On Tue, 2005-01-25 at 20:46 -0500, Ivica Ico Bukvic wrote: > > Similar problem here except probably worse. Nando has also reported > > similar > > issues on alsa-devel list. I'd suggest voicing your concerns there as > > to the > > best of my knowledge the hdsp stuff is broken in 1.0.8. > > > > Best wishes, > > > > Ivica Ico Bukvic, composer & multimedia sculptor > > http://meowing.ccm.uc.edu/~ico/ > > > > > ------------------------------ > > _______________________________________________ > linux-audio-user mailing list > linux-audio-user(a)music.columbia.edu > http://music.columbia.edu/mailman/listinfo/linux-audio-user > > > End of linux-audio-user Digest, Vol 16, Issue 115 > ************************************************* >

19 years, 10 months

Re: [linux-audio-user] Decent reverb, and DSP in hardware?

by davidrclark＠earthlink.net

Hi Dave: Thanks very much for the feedback. As I'm sure you know, feedback is invaluable. Can you "import gtk" interactively? (In the event you are not familiar with Python and Gtk, I should mention that it's a Python module, not Gtk+ the library. It's often referred to as PyGtk.) $ python Python 2.3.1 (#1, Sep 24 2003, 16:45:45) [GCC 3.2.3] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import gtk >>> (ctl-D to exit) Please feel free to contact me offline with any response if you wish. Regards, Dave. P.S. Is anyone else having the "gtk import" problem? I invite anyone who has problems with these programs to contact me by personal email --- either desiring more information on how to use, coefficients already calculated, or whatever. I'll try to respond as soon as I can.

19 years, 10 months

[linux-audio-user] Re: AacPlus compared to Ogg

by guerrier

aacplus does sound great, even at 32kbs bitrate. It's developed by Coding Technologies ( http://www.codingtechnologies.com/products/aacPlus.htm ). There is an article about it on slate ( http://slate.com/Default.aspx?id=2112548& ). about Licensing-- http://www.codingtechnologies.com/licensing/aacplus.htm I actually send an email inquiry to info(a)codingtechnologies.com and I am waiting for a reply. aacplus is an enhanced MPEG4-audio. it plays in winamp and vlc. Does it play in xmms and other linux audio players? I guess it shoud.! guerrier > Message: 5 > Date: Mon, 24 Jan 2005 14:58:29 -0600 > From: "Steven Clift" <slc(a)publicus.net> > Subject: [linux-audio-user] AacPlus compared to Ogg > To: <linux-audio-user(a)music.columbia.edu> > Message-ID: <02cc01c50257$7520eeb0$6500a8c0@PUBLICUS2> > Content-Type: text/plain; charset="US-ASCII" > > I understand the licensing differences between Ogg and MP3. What about > the newer aacPlus? > > The new KCMP is using aacPlus because they claim they can webcast near > CD-quality with a pretty small stream: > http://minnesota.publicradio.org/radio/services/thecurrent/ > (It is great! > > I am trying to get them to add Ogg and MP3 to reach more people. > > Steve > > Steven Clift - http://publicus.net - Reply to: clift(a)publicus.net > Join DoWire: http://dowire.org > E-Democracy: http://e-democracy.org > > ------------------------------

19 years, 10 months

Re: [linux-audio-user] dssi segfaul

by David Baron

On Wednesday 26 January 2005 19:03, linux-audio-user-request(a)music.columbia.edu wrote: > IIRC, make sure that the name reported by hostname(1) is in the > /etc/hosts file. Otherwise liblo would segfault when trying to launch a > new server Host is this entered there? 127.0.0.1 myhostname or what?

19 years, 10 months

[linux-audio-user] Lexicon USB reverb

by Steve Harris

http://namm.harmony-central.com/WNAMM05/Content/Lexicon/PR/MX200.html Seems relevant to the linux reverb plugin questions. I would imagine that the plugin sends out a packet of samples over USB, and receives a packet back, maybe with a one packet slip to reduce the plugin processing latency, at the cost of overall latency. I wonder if they'd be willing to release the USB protocol they use. Its possible they compute some of the reverb inside the plugins (eg. the ERs) as a cheap hack to hide USB latency. More likly they dont bother though. If the protocol is simple enough it could be sniffed from a windows box. No info on pricing yet. - Steve

19 years, 10 months

Re: [linux-audio-user] M audio delta 44

by David Baron

On Sunday 23 January 2005 08:23, linux-audio-user-request(a)music.columbia.edu wrote: > I use a Delta 66 (very similar card). I think you'll find it easy to > set up. It sounds good and works well at low latencies. Hard to go > wrong with any of the M-Audio PCI cards, AFAIK Also not for the Dman2044. Love the card but ... Windows 98 only. No ALSA, no OSS, nada. I might try my hand at making an alsa driver for this since the other correspondent has dropped it. Existing code to be used is not really comprehensible.

19 years, 11 months

Re: [linux-audio-user] CPU temperature, mp3 decoding and

by Jon B

> one of my continuing quests on linux is trying to find a suitable mp3 > player to ... play my mp3's. what i need is something like amarok (my > favourite), rhythmbox or muine that has multiple output interfaces; > intuitive mp3 browser/library; cover art display; slick interface; and > system tray/plugin support. I would like something better, too. I've just been using XMMS, which is convenient because it has the automatic JACK output plugin. But it is ugly as hell. The stupid fixed bitmap size is about the size of my thumb on my high res LCD, so I have to always run in double size, with all the fonts bumped up as well. It is somewhat buggy and unstable as well. (Though it crashes less often and opens more file types with less effort on my part than the few other programs I have tried.) I am looking at the ones you listed. Are they much more beta, though? I want something that doesn't crash, has a GUI that works on more than just the developer's screen, can play all file types effortlessly and... well... is easy to use. I guess that's too much to ask for a linux app...

19 years, 11 months

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Linux-audio-user January 2005