Linux-audio-user January 2009

linux-audio-user@lists.linuxaudio.org

165 participants
173 discussions

Re: [LAU] [LAD] LAC2009

by Renato Fabbri

2009/1/14 David Robillard <dave(a)drobilla.net> > On Tue, 2009-01-13 at 17:29 -0800, Renato Fabbri wrote: > > 2009/1/13 David Robillard <dave(a)drobilla.net>: > > > On Wed, 2009-01-14 at 01:37 +0100, Fons Adriaensen wrote: > > >> On Tue, Jan 13, 2009 at 07:38:40PM -0500, David Robillard wrote: > [snip] > > >> > I'd like to do an LV2 presentation this year, but I don't think I > can > > >> > swing attendance :/ Dah well > > >> > > >> Still it would be good to have such a presentation. > > > > > > Definitely. LV2 is one of those things that can look > > > awful/weird/confuding/overdone at first glance but is really easy to > > > explain in real life such that people Get It... (that everyone involved > > > sucks at PR doesn't help either) > > > > > >> Beg, steal or borrow ! > > > > > > > hey, i really wanted some kind of step-by-step lv2 plugin tutorial > [snip] > > If you're into C++, lars' tutorial is pretty good: > > http://ll-plugins.nongnu.org/lv2pftci/ > thats a fantastic tutorial, imho. Anyway, things can get easier. not everyone is c/c++ fluent. and we can learn with specific implementations sometimes ;) > > -dr > >

16 years, 6 months

Re: [LAU] [LAD] LAC2009

by Jörn Nettingsmeier

David Robillard wrote: > On Wed, 2009-01-14 at 18:40 +0100, Jörn Nettingsmeier wrote: >> David Robillard wrote: >>> I'd like to do an LV2 presentation this year, but I don't think I can >>> swing attendance :/ Dah well >> please with sugar on top? >> >> we should really have more infrastructure meetings. it would be great to >> have a dbus/lash and a lv2 session at lac09... >> >> and i'd love to hear your lv2 presentation :) >> >> >> jörn (who has never ever complained to you about drobilla.net svn not >> compiling :-D) > > http://dev.drobilla.net/newticket ;) http://dev.drobilla.net/ticket/321

16 years, 6 months

Re: [LAU] surround sound with stereo usb DACs?

by Bearcat M. Şandor

On Wednesday 14 January 2009 18:01:06 Loki Davison wrote: > D/A conversion isn't done in the box with the sound card i mentioned, > the echo 3g i have. Google for pics. But on cards where it is, sounds > quality / isolation / noise is still far better than most usb cards. > The whole usb / out of box thing is cheesy sales pitch basically. Get > a cheap pci card => be happy. Look at anything with envy chip > basically and m-audio delta, echo's cards, etc. Should find a much > better setup than a bunch of dodgy usb things. > than one card is a > really bad idea unless they are designed for it, and from my > experience, usb audio is a really bad idea on it own ;) Thanks Loki. I appreciate the help. I actually have a M-Audio delta 1010LT. I found i could not play two streams at the same time. So i hooked things up to the intelHD (onboard sound) and was amazed at how much better it sounded. I was dumbstruck. A cloudiness was gone and imaging was much more precise. I don't know what to say save that my intelhd may have advanced past the Delta 1010LT. It's an old card and this board is only year old. -- Bearcat M. Şandor Bearcat(a)feline-soul.net Jabber: bearcat(a)feline-soul.net MSN: bearcatsandor(a)hotmail.com Yahoo: bearcatsandor AIM: bearcatmsandor

16 years, 6 months

problems with hdsp multiface

by krgn

hello list, I have a x86_64 debian setup (lenny/sid) with rt-kernel and ran all of this with a rme multiface mark 2 card. until today, that is when the card suddenly stopped working. It fails with this error: [ 2618.484513] pccard: CardBus card inserted into slot 0 [ 2618.540382] RME Hammerfall DSP 0000:16:00.0: enabling device (0080 -> 0082) [ 2618.540555] ACPI: PCI Interrupt 0000:16:00.0[A] -> GSI 16 (level, low) -> IRQ 16 [ 2620.541147] ALSA /home/krgn/alsa/alsa-driver-1.0.18a/pci/rme9652/../../alsa-kernel/pci/rme9652/hdsp.c:659: Hammerfall-DSP: no Digiface or Multiface connected! [ 2620.541569] ACPI: PCI interrupt for device 0000:16:00.0 disabled [ 2620.541780] RME Hammerfall DSP: probe of 0000:16:00.0 failed with error -5 the card is definitely connected though, so something else must be wrong here. lspci -vv shows 15:00.0 CardBus bridge: Ricoh Co Ltd RL5c476 II (rev ba) Subsystem: Lenovo Device 20c6 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 168 Interrupt: pin A routed to IRQ 16 Region 0: Memory at d78ff000 (32-bit, non-prefetchable) [size=4K] Bus: primary=15, secondary=16, subordinate=17, sec-latency=176 Memory window 0: d8000000-dbfff000 (prefetchable) Memory window 1: c4000000-c7fff000 I/O window 0: 00006000-000060ff I/O window 1: 00006400-000064ff BridgeCtl: Parity- SERR- ISA- VGA- MAbort- >Reset- 16bInt- PostWrite+ 16-bit legacy interface ports at 0001 Kernel driver in use: yenta_cardbus Kernel modules: yenta_socket 16:00.0 Multimedia audio controller: Xilinx Corporation RME Hammerfall DSP (rev 32) Control: I/O- Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping+ SERR- FastB2B- DisINTx- Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Interrupt: pin A routed to IRQ 16 Region 0: Memory at c4000000 (32-bit, non-prefetchable) [size=64K] Kernel modules: snd-hdsp Trying to narrow this down further and plugged the card into an older lappy with debian lenny x86 on it where it works fine. I'm really puzzled by this as it all used to work great yesterday and now it doesn't find the card no more?? I also wonder how I can find out what exactly error -5 is. it seems that -16 is when the firmware is missing, but this is not the case here. I am really really puzzled as to whats going on as the setup worked flawlessly until yesterday. the only thing that has changed since yesterday is that I disconnected the unit from the computer, went out on a trip and reconnected it. does anyone have an idea what could be my problem here? thanks in advance, karsten

16 years, 6 months

surround sound with stereo usb DACs?

by Bearcat M. Şandor

Folks, I'm slowly building a hi-fi surround system around Trends Audio products. They have a nice, little, stereo usb DAC. I am really only looking at wanting 4 channels for now. I have something like 8 usb2 ports on this computer so i have plenty. Can i have my player (xine or mplayer or what have you) decode the signal be it dolby digital, dts, or the blu-ray formats (ha) into channels and then send (right and left) out of one usb port and (right rear and left rear) out of a second usb port to a pair of these stereo DACs. I assume if i eventually wanted an 8 channel system i could so the same thing with more channels? Is this feasible? Any drawbacks? Also, those Trends Audio TA-10.1 are awesome. Thanks. -- Bearcat M. Şandor Bearcat(a)feline-soul.net Jabber: bearcat(a)feline-soul.net MSN: bearcatsandor(a)hotmail.com Yahoo: bearcatsandor AIM: bearcatmsandor

16 years, 6 months

wfs streaming project report

by Jörn Nettingsmeier

hi guys! today i felt a little bored and needed to do something to avoid finishing my lac paper, so i brushed up the documentation about the wave field synthesis live streaming project that i did for tu berlin last year. if you need to kill some time and enjoy reading war stories with linux audio, really loud music and infrared lasers in them, have a go at http://stackingdwarves.net/public_stuff/event_documentation/wfs_live_transm… best regards, jörn

16 years, 6 months

Re: [LAU] surround sound with stereo usb DACs?

by Loki Davison

On Thu, Jan 15, 2009 at 10:18 AM, Fons Adriaensen <fons(a)kokkinizita.net> wrote: > On Thu, Jan 15, 2009 at 10:20:28AM +1100, Loki Davison wrote: > >> On Sat, Jan 10, 2009 at 5:59 PM, Bearcat M. Şandor >> <HomeTheater(a)feline-soul.com> wrote: > >> > I'm slowly building a hi-fi surround system around Trends Audio products. They >> > have a nice, little, stereo usb DAC. I am really only looking at wanting 4 >> > channels for now. I have something like 8 usb2 ports on this computer so i >> > have plenty. >> > >> > Can i have my player (xine or mplayer or what have you) decode the signal be >> > it dolby digital, dts, or the blu-ray formats (ha) into channels and then send >> > (right and left) out of one usb port and (right rear and left rear) out of a >> > second usb port to a pair of these stereo DACs. I assume if i eventually >> > wanted an 8 channel system i could so the same thing with more channels? >> >> Have you thought of buying a decent pci sound card? A PCI solution >> would mostly likely be better in almost every way. >> You can choose a level of price quality, and > 8 channel out is easy >> to find. My echo 3g does that fine, with no arseing around and i would >> suspect superior sound quality, if not put and DAC you like on the >> ADAT out... ;) > > I'll second that. For any serious surround you want > matched sample rates and delays, and I doubt very > much if multiple 2-ch USB interfaces can provide that. > > Also the availability of DRM-ed format decoders on > Linux could be problematic, but I'm not an expert > on that matter. > > Ciao, > > -- > FA > > Laboratorio di Acustica ed Elettroacustica > Parma, Italia > > O tu, che porte, correndo si ? > E guerra e morte ! > I think blu-ray playback works with mplayer/etc. It's just quite annoying https://help.ubuntu.com/community/RestrictedFormats/BluRayAndHDDVD Not as annoying as getting multiple usb cards to work though ;) One usb card is horrible enough. In my experience usb audio = evil. PCI/firewire/pcmcia are all ok ;) Loki

16 years, 6 months

no software mixer in usb soundcard - possible workarround?

by Atte André Jensen

Hi I have an Edirol UA-1A usb soundcard, that I started using in my server with mpd as a music playing device. Most mpd clients has a volume knob that worked with the crappy build-in soundcard, but not with the usb one. I seem to remember that I never saw anything in my gnome mixer for this soundcard, and also has a vague idea that it simply might not have a mixer buildin or it's not supported by alsa. Long story short: Is this just me misconfiguring it (if so what could be wrong) or is there a software solution to allow me to change the volume of the soundcard from mpd clients? -- Atte http://atte.dk http://modlys.dk

16 years, 6 months

Re: [LAU] Invitation to Southern California Linux Expo 7x

by Gareth J. Greenaway

Hi, As a matter of fact I do. I just forgot to include it in the original email. If you use the promo code AUDIO, you'll receive a 50% discount off a full price pass. Thanks! Gareth Tobiah wrote: > >> The Southern California Linux Expo is fast approaching > > $60 is a little steep for me. Have any priority codes > for LAU'rs? :) > -- Gareth J. Greenaway | g(a)socallinuxexpo.org Voice - 877-831-2569 x130 Southern California Linux Expo http://www.socallinuxexpo.org

16 years, 6 months

LAC2009: Paper deadline extended!

by Frank Neumann

This mail is to inform you that the paper submit deadline for the LAC2009 (Linux Audio Conference)(1) has been extended to January 29th, 2009. So, if you have been shocked by the fact that the initial planned deadline would be tomorrow, HERE is your chance to get your half-cooked paper/idea into a good shape and submit(2) it now! :-). (1) The LAC (Linux Audio Conference) is an annual event where developers, users and composers from all around the world come together for 4 days to present current developments, new compositions and other news to the public, listen to concerts, and generally have a good time together. The LAC2009 is taking place at the Casa della Musica in Parma, Italy, from April 16th to 19th, 2009. The conference homepage is at http://lac.linuxaudio.org/2009/. (2) Paper submission information: http://lac.linuxaudio.org/2009/call-for-papers/ Paper submission upload form: http://lac.linuxaudio.org/2009/openconf/openconf.php Keep 'em coming, Frank, on behalf of the LAC2009 organization team

16 years, 6 months

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Linux-audio-user January 2009