Linux-audio-user December 2007

linux-audio-user@lists.linuxaudio.org

151 participants
147 discussions

by Ken Restivo

The developer of the shell-fm software just gave me a clue as to why it is so painful to try to play anything through stdin with mplayer: apparently mplayer does aggressive caching and won't start playing until it gets some large amount of input first. shell-fm has an "extern" function that'll fork off a process to play through an external player, but it won't work because mplayer is expecting to grab quite a bit of the stream. -ken

17 years

Slightly off topic question.

by Bill White

This is not really linux-audio related strictly, but maybe someone on this list has an idea. I have an ubuntu feisty system, and I'm trying to get CDROM ripping to work. I used to be able to rip my own CDs using my DVD writer, but something has stopped working, and I can't diagnose it. The failure mode is that the audio is read, but the reading is really slow. The reader, cdparanoia, tells me that there is a lot of "Unreported loss of streaming in atomic read operation" errors, which it donotes with this emoticon: :-P The output is very noisy, with a lot of transient pops and clicks. By "a lot" I mean an average of 3-4 a second. It's really annoying. The DVD reader reads CDs to play them, but it can't seem to read them to rip them, which seems completely counterintuitive to me. I don't have the cd audio cable connected, so I know the CDs are being read using the DVD reader, and not being read through the cd audio cable. The DVD Writer is an ATAPI writer, attached to the IDE1 slot. There is no other device on this IDE interface, and the DVD Writer is set to be an IDE master. So, the system sees it as /dev/hdc. I have an ubuntu feisty system, with a 2.6.20-16 32-bit kernel and an AMD 32 bit processor, not that that it really matters. Does anyone have (1) any clue as to why this fails, or (2) any clues as to how to diagnose the problem? Thanks.

17 years

Problems with Ardour_vst

by David Baron

The wine exe connected with this yields and incorrect exe format error. This had been a problem with dssi-vst but compiling this with recent wine fixed that. Ardour error persists. Any ideas.

17 years

audacious: can't pause *.wav file

by Studio 32

Hey, When I listen a wav-file with adacious in combi with jack, I can't pause the song. I works fine with *.ogg or mp3. Anyone else having this problem? regards, _________________________________________________________________ Express yourself instantly with MSN Messenger! Download today it's FREE! http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/

17 years

Fluidsynth on OpenMoko phone?

by Ken Restivo

I've just recently discovered this: http://www.openmoko.org/ 266Mhz ARM processor. Not a whole lot of heft, but I'm wondering if it'd be enough to run fluidsynth? Sample playing is pretty low-effort, most of the time. It has USB host capability. It runs a regular old 2.6 Linux kernel. I need to get a mobile phone anyway, so I'm thinking: hmm, instead of using my computer as my instrument, why not use my phone as my instrument? Instead of bringing a laptop to a live gig, and worrying about it getting drinks spilled on it, etc, I can just whip out my phone, plug it into my amp, plug my keyboard and USB audio interface into it, and start playing. All I'd really need is Fluidsynth, Specimen, and AZR3, and I've got 99% of what I use in any kind of live situation. Anyone have one? Has anyone tried to get ingo patches, jackd, and fluidsynth running on it? I can't invest US$300 right now only to find out it won't work. -ken

17 years

Phasex patches

by Nigel Henry

I like Phasex, but am clueless about programming softsynths, and creating patches. That said I've managed to create a patch that sounds a bit like a piano, but not like my acoustic upright piano. Patches attached below. My piano is a Focke straight strung job from the the early 1900's, and has a really bright sound. I have another piano, an overstrung one, but the sound is quite heavy on that. Back to Phasex and the attached patches. The first one, Piano-047.phx was my first go, and I wasn't too happy with it. I the posted the patch to Folderol on the LAU list, and he came back with Piano-047a.phx. This was different, and sounded ok, but was not what I was looking for. I've had another go today at getting a realistic piano sound, Piano-048.phx, but this in no way sounds right. From my googling, creating the sound of an acoustic piano is all but impossible with a softsynth, but something near to it would be nice. Any help in improving the attached patches would be welcome. Nigel.

17 years

Xruns and Thinkpad T60

by Raphael Bollen

Hi Everyone, I'm struggling to transform a Thinkpad T60 into a decent audio system. I've installed ubuntu studio Feisty and a realtime kernel from texware.it. When I run jack in realtime mode using for example 512 frames/period, it shows in its messages a lot (>10/sec) late driver wakeup warnings and does a lot of xruns (>1/sec). I've changed the IRQ priority of the sound card (an HDA intel) to realtime but this does not change the warnings/xruns. It's not the first time I setup a computer for audio and so far succeded using 64 frames/period. Here I tried every settings I could (periods/buffer, samplerate, even tried with a Maudio Fast track pro) but still no joy. This Thinkpad has an ATI graphic card (not on the same IRQ as the sound card) and uses fglrx driver. Could this be the culprit? Is there another (free) driver I could use? Does anyone have an idea of what to try next? Many thanks -- Raphaël Bollen.

17 years

Midi Channels and DSSI Synths

by Miguel Penene

Hey, today I was messing around with seq24 but I couldn't figure out how launch multiple dssi plugins mapped to independent midi channels. I'm using jack-dssi-host to launch the plugins but I don't see an option to make the synth only listen to specific midi channel a la ZynAddSubFX. Any Suggestions? BTW, you can check out what I did with Seq24 here. There are a bunch of audio breaks, damn system. Starts off slow but then gets "interesting." http://eckz.zapto.org/eckz/seqmadness.mp3

17 years

LAU motherboards

by arisstotle.54695488＠bloglines.com

I'm shopping for new components and would Like to get a motherboard that will let me set my own IRQs for pci cards. So I ask, can anyone provide some recommendations of boards to look for, boards to avoid, or boards that totally pwn. -Regards

17 years

Which soundcard?

by Studio 32

Hey, I want to buy a new soundcard. I want to use it with Ardour and Jack on Debian/ studio64 and want to play and record guitar and voice with it. I would be happy if I could connect a least one guitar and two mics. Also need to record some LP's to cd with it... Some say buy a m-audio Mobile pre, others something like a m-audio audiophile 2496. What the difference and what’s better? Can you use a mobile pre also with a mixer (for if I decide to buy such a thing later in my career ;) )? I thougt that a m-audio usb is maybe less fragile then a pci-card and easier to change from pc to pc (which is not really needed) ... Right now I just have a onboard soundcard (82801DB-ICH4) and not a lot of money ;) best regards, studio 32 _________________________________________________________________ Express yourself instantly with MSN Messenger! Download today it's FREE! http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/

17 years

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Linux-audio-user December 2007