Linux-audio-user December 2003

linux-audio-user@lists.linuxaudio.org

149 participants
190 discussions

[linux-audio-user] [ANN] swh plugins release

by Steve Harris

http://plugin.org.uk/releases/0.4.3/ New plugins: Butterworth filter plugin (Alexander Ehlert) Impulse generator plugin (Andy Wingo) Delay plugin (Andy Wingo) Signal decay plugin (Andy Wingo) DJEQ plugin (me) Reverse Delay plugin (Jesse Chappell) Expander plugin (me, more-or-less untested) Vinyl sound plugin (me) Improvements: Improvements to the IIR filter code (Alexander Ehlert) Gain and delay correction factors for hilbert transformer (Fons Adriaensen) Make biquads internally float/douable at compile time (me) Changes to pitch scale (can't remember why, me) Added latency reporting ports to (most) plugins that need them (me) Updated README and auto* stuff (me) Changes to allow building under Win32 (Audacity Project) Fixed UID clash (me) - Steve

21 years, 1 month

[linux-audio-user] Re: ALSA: What is the website missing?

by Andrew Burgess

>> This is supposed to be the functionality of the user additions section. >> Writing up a specific .asoundrc for every card supported is an awesome >> task. It would require the developers (usually Takashi or Jaroslav) to >> spend the time for every device known to work. That means less actual >> coding. However there are plenty of people who use the devices and >> figure out the syntax for the .asoundrc by themselves. Recently I have >> been recieving about 4 useful additions per week. >> [...] >what about editing of the user submitted notes? >when the number of submissions increases, it becomes harder >to digest the information, some of it being better than others. >Ideally it might be nice to integrate good comments into the body >of the page. As its obviously far too much for Takashi and Jaroslav, >how about assigning responsibility for this to someone who owns >one of the cards. Eg i currently use the cmi8738 and would be willing >to be editor for this card. I can imagine there might be problems >with this, but.... Or perhaps automate it by allowing voting (was this entry useful to you?) then allow sort by votes.

21 years, 1 month

[linux-audio-user] future .asoundrc example - aoss xmms setup & problems

by Mark Knecht

Clemens, Hi. I made the required change to .asoundrc to map OSS to playback 5 & 6. pcm_slave.hdsp { pcm "hw:0" channels 26 } pcm.playback_5_6 { type dshare slave hdsp ipc_key 314159265 # some unique number ipc_key_add_uid yes # "no" to let multiple users share it bindings { 0 5 1 6 } } pcm.dsp0 { type plug slave.pcm playback_5_6 } The results were not positive. xmms starts, but as soon as hit the play button it exits with the following message: bash-2.05b$ aoss xmms xmms: alsa-oss.c:222: oss_dsp_hw_params: Assertion `err >= 0' failed. /usr/bin/aoss: line 9: 10892 Aborted LD_PRELOAD=${exec_prefix}/lib/libaoss.so $* bash-2.05b$ For kicks I tried mapping it to channels 0 & 1 instead, but got the same results. bash-2.05b$ aoss xmms xmms: alsa-oss.c:222: oss_dsp_hw_params: Assertion `err >= 0' failed. /usr/bin/aoss: line 9: 11022 Aborted LD_PRELOAD=${exec_prefix}/lib/libaoss.so $* I checked that libaoss from yesterday's Alsa-1.0.0rc1 release and it seems to be: bash-2.05b$ slocate libaoss.so /usr/lib/libaoss.so.0 /usr/lib/libaoss.so /usr/lib/libaoss.so.0.0.0 bash-2.05b$ ls -al /usr/lib/libaoss.so* lrwxrwxrwx 1 root root 16 Dec 1 12:19 /usr/lib/libaoss.so -> libaoss.so.0.0.0 lrwxrwxrwx 1 root root 16 Dec 1 12:19 /usr/lib/libaoss.so.0 -> libaoss.so.0.0.0 -rwxr-xr-x 1 root root 43606 Dec 1 12:19 /usr/lib/libaoss.so.0.0.0 bash-2.05b$ However, what is interesting is that my 'wrong' example before will actually work in aoss, except it maps xmms OSS audio to playback channels 1 & 2. This is correct, in the sense that I get only 2 playback channels, but they are mapped incorrectly. <WRONG, BUT WORKS SORT OF> pcm.dsp0 { type plug slave pcm.playback_5_6 } I'm confused by this. Is this an aoss problem? Is it a driver problem WRT my HDSP 965 specifically2? Something else? BTW - These results are vaguely familiar. I think this happened before, and I stumbled on this 'working' option just by my trying to understand the language and doing a bit of guessing. What I don't understand is *why* this option that uses the language incorrectly is even allowed to run instead of producing some message about bad parsing of .asoundrc. Comments? For further kicks, and it likely makes no sense at all, but I decided to try the 'right' format in .asoundrc, but use plughw:0 instead of hw:0. That produced an interesting message from xmms: pcm_slave.hdsp { pcm "plughw:0" channels 26 } bash-2.05b$ aoss xmms Segmentation fault You've probably found a bug in XMMS, please visit http://bugs.xmms.org and fill out a bug report. Xlib: unexpected async reply (sequence 0x6d8)! Thanks in advance for all your help. Cheers, Mark

21 years, 1 month

[linux-audio-user] ZynAddSubFX: can it be played from a hardware keyboard?

by Eduardo Guerrero

Sorry for being too newbie again but how do I play the sounds in ZynAddSubFX with my midi keyboard? I think it's a configuration problem since I don't get any sound even with the Virtual Keyboard. Thank you for your patience, Eduardo.

21 years, 1 month

[linux-audio-user] Re: linux audio & midi question

by Robert Jonsson

Sorry for spamming, This was intended for Eduardo directly but our mailserver failed to find he's mailadress. /Robert -------- Original Message -------- Subject: Re: linux audio & midi question Date: Mon, 1 Dec 2003 22:53:12 +0100 From: Robert Jonsson <robert.jonsson(a)dataductus.se> To: Eduardo Guerrero <felixe(a)domovolcanico.com> References: <3FCBB52B.5050202(a)domovolcanico.com> Monday 01 December 2003 22.39 skrev Eduardo Guerrero: > > I would also advice you to install a newer version of muse, check > > rpm.nyvalls.se/sounds9.1.html. > > Hi Robert, thank you for your help. I have one more question: how do I > add the rpm's in nyvalls.se site to my urpmi database? I'm afraid I need > the full command line. Hi Eduardo, It's on the page actually ;) urpmi.addmedia thacs.rpms http://rpm.nyvalls.se/9.1/RPMS with hdlist.cz for 9.1. if you like to try the absolutely newest you should use the repository for 9.2. (many of the apps work with 9.1 as is, though not all) (rpm.nyvalls.se/sounds9.2.html) As for MusE I think we will release an even newer version in a week or so, 0.6.3, maintenance release while waiting for 0.7.0 :). /Robert

21 years, 1 month

Re: [linux-audio-user] Recommendatio wanted

by davidrclark＠earthlink.net

Joerg wrote: "... it does not occur as rarely as you might think." This was a comparison, not an absolute measurement. The comparison results suggest (not prove) that it's something else, not the driver. If it's the driver, then why is there a measurable difference between two sf2 files playing the same MIDI file with the same patch number and same channels? It could be, but I see no proof. "It is practiaclly impossible to play these examples without dropping notes. Especially if the drum or percussion fails this is very angry." Compared to the dropping of notes by Rosegarden (older version) and Muse for other reasons, this wavetable synthesis problem is a minor annoyance. The timing for both of these sequencers is noticeably off, and the older version of Rosegarden gets certain MIDI files completely wrong with stuck notes, etc. on my system. A good test example is bohemian.mid in Nathan Laredo's playmidi. "It happens also if I use the FluidR3 font. And - to make this clear - independend of whether I play with NoteEdit or the exported MIDI files with any arbitary MIDI player and/or sequencer or whatever you have in mind, as long as these MIDI player/sequencer uses the hardware wavetable synthesis." "And more important: It never occurs with AWE64 independend of the soundfond and/or the MIDI player and/or sequencer." This is to be expected for both a driver problem and a loading problem or timing problem. It could also be some sort of firmware problem, a circuit design problem, logic problem in the chips on the soundcard, etc. It still seems premature to conclude that this cannot be anything else other than a driver problem. Maybe it is, maybe not.

21 years, 1 month

[linux-audio-user] Analyzing ogg files

by Mark Knecht

Hi, How can I get info from an ogg file that tells me things like sample rate, bit-depth and other information? sndfile-info doesn't seem to know about ogg files. (A surprise to me...) Thanks in advance, Mark

21 years, 1 month

Re: [linux-audio-user] Recommendatio wanted

by davidrclark＠earthlink.net

Joerg wrote: "Known bugs: - MIDI on SB live drive not working properly. - wavetable drops notes sometimes. (a good test example wanted.)" Exactly. No information on the cause, nor whether it is driver or not. It is simply noted that notes are sometimes dropped with wavetable sythesis. No definite conclusion can be drawn from this "bug report.". "http://rnvs.informatik.tu-chemnitz.de/DROP/gap.html" This file caused NO problems for emu10k1 and pmidi w/EXTERNAL synth (N264). Rosegarden (older version) dropped many, many notes; Muse dropped many notes under certain types of load (switching desktop, for example), even with external synth, even with Terratech EWX 24/96 and Roland XV-3080. With wavetable synthesis, I did now finally see 2 or 3 dropped notes with pmidi. The 8mbgmsfx.sf2 soundfont supplied by Creative Labs was worse than a 4 MB Steinway piano-only soundfont file. The Steinway soundfont VERY RARELY dropped any notes. But I could make the problem much worse by adding load, just as Muse and Rosegarden do. I'm not at all convinced that this is a driver issue. Wavetable synthesis should be more difficult for the system than external midi, so timing with O/S's such as Linux and Windows could be and eventually will be affected. Anyone actually know in detail the emu10k1 driver situation? The bug report isn't really of any help to determine the cause.

21 years, 1 month

[linux-audio-user] Announcing the ultra-mega-alpha release of Specimen

by Peter Bessman

Specimen is a midi controlled sampler, and it's very first public release is available from http://www.gazuga.net/specimen.tar.gz In all honesty, I advise against downloading this in it's current state unless you intend to hack on it or play with it for sheer amusement value only. There are a few TODO items that must be taken care of before this can be considered usable software (as the next release will be). The main reason for this release is because I said I was going to make a release in a couple of weeks 15 days ago. It's very nascent stuff. You have been warned. [pb]

21 years, 1 month

[linux-audio-user] arecord and xrun

by Ken Dere

I am trying to record some phonograph records using arecord. I get xruns of about 0.5s or so. I have tried increasing the buffer size which worked up to a point. I have tried running as root which didn't help. Is there anything I could do short of applying the low-latency patch to get this to wok? thanks, KD

21 years, 1 month

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Linux-audio-user December 2003