Linux-audio-user December 2004

linux-audio-user@lists.linuxaudio.org

186 participants
209 discussions

[linux-audio-user] alsa clients plugged into jackd with jackplug

by Esben Stien

I don't think I understand this jackplug concept. I'm trying to get an alsa client, such as aplay to play through jackd. I've setup jackplug in /etc/asound.conf pcm.jackplug { type plug slave { pcm "jack" } } pcm.jack { type jack playback_ports { 0 alsa_pcm:playback_1 1 alsa_pcm:playback_2 } capture_ports { 0 alsa_pcm:capture_1 1 alsa_pcm:capture_2 } } I then tell aplay to use: #aplay -d jackplug foobar.wav But aplay plays the file even if jackd is not started; why?. Isn't jackplug supposed to show up in my jack connections when aplay is playing? I seem to be missing something vital. Is there some way to make a "fake audio device", like hw:3,0 that alsa applications can connect to so that I can get the audio out and then send it through jack, process it and then send it to the real audio device? -- Esben Stien is b0ef(a)esben-stien.name http://www.esben-stien.name irc://irc.esben-stien.name/%23contact [sip|iax]:b0ef@esben-stien.name

19 years, 4 months

[linux-audio-user] more music with Ardour

by Dave Phillips

Greetings: I've added another recording to my "music made with Ardour" page, a guitar duet this time. It's a performance of an old Jimmy Dorsey tune called Maria Elena, you can check it out here: http://linux-sound.org/ardour-songs.html Best, dp

19 years, 10 months

[linux-audio-user] Advice Saxophone Music

by Glenn McCord

Gidday everyone. This is not a Linux topic but I'm sure there must be some saxophonists amongst you. I need to get some more intermediate level Saxophone music for teaching purposes. I've got some good James Rae books and have been getting the best stuff out of Fake books but good music is hard to come by. Very few sax players want to learn classical and lots of the jazz stuff gets hard pretty quick. Any advice for books? Heck, even throw me the name of a good theme tune so that I can write it out. I always like using the Indianna Jones theme. Cheers.

20 years

[linux-audio-user] Realtime Audio on SuSE Linux Pro 9.2 HOWTO

by Dan Harper

Hi, I've just finished writing up a HOWTO on setting up realtime audio on SuSE Linux Pro 9.2. You can get it here: http://danharper.org/linuxdesktopblog/ After previously using Planet CCRMA under Redhat, all I can say is Fernando, you are a huge blessing to us Linux Audio users, but SuSE is too good to pass up! Dan -- Dan Harper http://danharper.org --- Enhancing the Linux desktop for desktop users --- --- http://danharper.org/linuxdesktopblog/ ---

20 years

[linux-audio-user] FM7 ?

by Dave Phillips

Greetings, Earthlings: As a long-time fan of FM synthesis I've been wondering whether I should try getting NI's FM7 running under libfst or vstserver. I own two TX802s and am very fond of their sounds. NI's advertising makes some extraordinary claims about FM7, so I thought I'd ask here to see if anyone on this list has used it. I'm especially interested in whether anyone has actually compared it to its hardware antecedents. Anyone ? Best, dp

20 years

[linux-audio-user] Tuning Program or wav files?

by Bearcat M. Sandor

Folks, I've got a early Holiday present in the form of a new violin. While my eventual aim to to put a pickup on it and start playing around with MIDI, i have to get it tuned first. I don't have a pitch pipe or piano handy. I have a very accurate (musically) system set up, of which my computer is a major part. I'm looking for wav files or a tuning program that would help me tune this violin. If i had a wav file or a tone generator, I could just put it on repeat while i was tuning. I've been searching the web for an hour now and have found nothing, but i may just be looking in the wrong places. The starting point for a violin is A (440) then D, then G then E. All are a perfect fifth apart. For the record, i use KDE mostly, but have the gnome libs installed in case anyone has a good app suggestion? Anyone out there able to help? Much appreciated, Bearcat M. Sandor

20 years

[linux-audio-user] announce-list policy

by Kai Vehmanen

Hello everybody, when linux-audio-announce was created, it was agreed that announcements should be crossposted to all three lists. The reasoning was that this way people wouldn't have to subcsribe to LAA if they were already on LAD+LAU. Now when you look at LAA archives, some people post only to LAA, some (like me) to all three lists, and some to either LAA+LAD or LAA+LAU. My suggestion is that we drop this policy altogether: announcements should be sent to LAA and optionally to LAD and/or LAU. At least I've always had the nasty feeling that I'm spamming LAD+LAU with my Ecasound release announcements. Of course, when announcing conferences, major new versions (JACK-1.0.0 maybe? :)), etc, I see no harm in cross-posting to all the three lists. So in other words, if you really want to see _all_ the announcements, you should subcsribe to LAA. Any comments? If no objections, at least I will from now on send non-major release announcements only to LAA. -- http://www.eca.cx Audio software for Linux!

20 years

[linux-audio-user] 2.6.10

by Lee Revell

I tried JACK today with vanilla 2.6.10 and had excellent reaults - it works with 32 and 64 frames, which previously required Ingo's patches. Many of the latency fixes have been going upstream, and it looks like we are finally showing some results. I think we may finally have a kernel that's usable out of the box for low latency audio. Can someone else try to verify these results? Lee

20 years

[linux-audio-user] BruteFIR convolution help

by derek holzer

Hi gang, I'm staggering my way through the BruteFIR documentation in hopes of building a simple soundfile convolver. Not being a mathematician, I'm not too good at writing FIR filter coefficients ;-) Besides that, using coeficients is not what I am looking for. If anyone here is using BruteFIR to convolve one sound file or sound stream with a soundfile impulse, could you post an example config for that? Otherwise, are there simpler ways of doing this? I've tried the impulse convolution in Rezound, for example, and gotten almost nothing but pure DC out of it. What I miss in Linux is a simple impulse convolver like the one in SoundHack for Mac OS9, Sonic Mirror or [especially] HOG for windoze [doesn't run under WINE, I tried!]: http://music.calarts.edu/hog/ thanks much! d. -- derek holzer ::: http://www.umatic.nl ---Oblique Strategy # 36: "Consult other sources -promising -unpromising"

20 years

[linux-audio-user] SB Live 24bit

by tommy

Hi there, i recently bought a Creative Labs SB Live 24bit 7.1 soundcard (SB0410), to replace my old SB live player 1024. i suddenly noted that this card is _NOT_ based on emu10k1 chip, but on an CA0106-DAT. The latest alsa CVS has a driver for this chip, but with mplayer, using the "mplayer -ao alsa:device=hw=0 -channels 6 -alang de *.VOB" command i only get wired sound out of it - but when using oss, i get good sound, but only stereo. i want to know if anyone had success getting this card to work. i also want to know if this card supports mixing in hardware. ( using snd_pcm_oss with multiple oss apps.) thanks, tommy

20 years

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Linux-audio-user December 2004