Linux-audio-user April 2007

linux-audio-user@lists.linuxaudio.org

171 participants
143 discussions

by Ken Restivo

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I'm a hardware idiot. I have the worst luck buying hardware: I always buy the wrong thing and end up getting screwed. Plus I don't have a lot of money, so when I get screwed, it's devastating. So that's why I avoid buying hardware. But still, I need a laptop, and so here I am shopping and probably about to make some stupid and unrecoverable mistake that will cost me everything. I'm torn between these two ones: http://www.nextwarehouse.com/item/?313598_ASUS_90NG6G161500000L18 Which says it supports Yonah but not Merom! This is bizarre, because I'm told that it is the same socket and same package. But still, the specs say what they say, and I'm reluctant to buy it because... what if the specs were right and I get screwed by a machine I can't upgrade? But this machine has SATA, and Nvidia chipset. Then there's this one: http://www.nextwarehouse.com/item/?321259_ASUS_90N-SI8G181101000L1Z Which explicitly says it will support Merom (including the T7600, which is what I want), but... it only has PATA support. It has the Intel graphics chipset but I'm used to that (with my Mac Mini) and it seems to work more than well enough for music stuff. So how important is SATA over PATA for audio work? And, does the graphics chipset matter at all (so far, I'd guess not). Finally, what's with the explicit lack of mention of Merom? Will a Merom T7600 simply not work in that unit, or is it a safe bet that it will? TIA for any help or advice on this. - -ken -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (GNU/Linux) iD8DBQFGEyHHe8HF+6xeOIcRAn9zAJ9k4Dahd8NQIB3CbQTNxiK9Uua18ACg72VZ 8vZkw3PDNEl07aHdEHd0KTc= =Xf6s -----END PGP SIGNATURE-----

17 years, 9 months

Nice story

by Bengt Gördén

In a nother thread Paul Davis wrote: > "A great instrument has qualities that the body can learn, and the mind > cannot" I've got a nice story about that. In the late 80th we where touring Holland and Britain with a choir. With us we had a young piano player (14 year old Daniel Karlsson). Late one evening we entered a hotel somewhere in Holland and was about to get ready for the night. Daniel was a bit elated because of the tour and everything. So we found a piano and some other instruments in a room. We started playing some standard selections and suddenly it was 12 o'clock and we wanted to go to bed. Daniel wanted to play some more and we sad to him, just 30 minutes and than you have to go to bed. After about 1h-2h I heard, from my room, someone still plays the piano and I though heck, he's still awake. I went over to the room and found him sitting in front of the piano playing. He played a tune that was sort of slow but very likable. I went over to him to say that he must go to bed and when I saw him from the front he was a sleep. I was really astonished and just stood there a couple of minutes and listened. Finally I had to wake him up all drowsy and blinked with his eyes saying is it breakfeast. :-) He is, BTW one of the more talented piano players in Sweden today. Plays in a band called Oddjob. regards, /bengan

17 years, 9 months

Re: [linux-audio-user] ?La revoluci?n inform?tica realmente revolucionar? la m?sica? Linux Audio Conference 2007

by david

Ken Restivo wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > On Fri, Mar 30, 2007 at 02:56:44PM -1000, david wrote: >> Go listen to something you've never listened before. Listen to something >> you've listened to in the past but really really hated - and listen for >> what make you hate it AND for what you like in it. > > Thanks. Novelty used to be a very reliable way to spark my brain into action and get the ideas going, at least when I was younger. It was disappointing to find that it doesn't seem to work so well anymore. The more experienced your ear and brain is, the harder it can be to find novelty. >> Go to the country side and listen to spring. > > That's what I've been listening to instead of music over the past year or so. I woke up one day recently and discovered that I'd much rather listen to the birds singing, surf crashing against the seawall a half-mile away, kids yelling in the park across the street, dogs barking in people's yards, etc., as opposed to most music. > > Anyway, I may have found a solution: going "home" musically and listening to old 1970's funk and soul and jazz-fusion, as well as 1960's bebop. That stuff still works for me. > > So in this case the problem was probably just my getting old and cranky. "They just don't make 'em like they used to". For the most part, they don't: > http://www.youtube.com/watch?v=SvAoOwesu4k > > Hmm, then again, maybe they do. This random young guy is pretty impressive: > http://www.youtube.com/watch?v=xZEtZJYwcP0 > > Someone should introduce him to the also-impressive Hitmuri, avec logicel libre: > http://www.hitmuri.com/Videos/Presentation_Hitmuri.avi YouTube and other sites where music is freely distributed can turn up many interesting things. And little-known bands can be fun, too. I have a CD by a Christian punk band called Crashdog. Their music is mostly a standard punk sound, with a good cover of the old Barry McGuire song from the 60's, Eve of Destruction. But the most interesting track sonically is called "Sept. 1994" and features cello, punk guitar, and bagpipe. I also like what Rasputina does with just two cellos, a drumset, and one main female voice. They have a lot of their own songs, but also manage to cover songs from Heart and Led Zeppelin. (If Jimmy Page can use a violin bow to play a guitar, a cellist can certainly use a cello to play guitar music!) Another one I've always liked was 1971's "Maggot Brain" by Funkadelic. -- David gnome(a)hawaii.rr.com authenticity, honesty, community

17 years, 9 months

Activismo_MF1_master_.ogg

by Marcos Guglielmetti

ftp://musix.ourproject.org/pub/musix/audio/Activismo_MF1_master_.ogg Hi, some music from here ;-) I used Ardour, Hydrogen, ZynAddSubFX, and... my ac guitar... and, well, Audacity just to apply a Fast Lookahead Limiter... the master is on -17db RMS average, I dont want to raise the volume more than that, I know that comercial songs are almost mastered at -10 from the year 2001, but I dont like it. I used postqc (ftp://musix.ourproject.org/pub/musix/deb) to gauge the RMS loudness. BTW: i dont like the drums, I think I will replace them with my ac drum :), but I do like the song -- Marcos Guglielmetti * Director del desarrollo de Musix GNU+Linux, 100% Software Libre * CD Download: (http://www.musix.org.ar/en/) * Colabora: http://www.musix.org.ar/wiki/index.php/Musix099_tasks * Videos, programas y otras cosas en: ftp://musix.ourproject.org/pub/musix/ * Reporte de errores a: https://www.musix.org.ar/wiki/index.php?title=Problemas-Bugs *IRC: #musix channel on freenode * http://autosus.wordpress.com/ «No te tomes en serio nada que no te haga reír» [un amigo de E. Galeano]

17 years, 9 months

Installing realtime kernel - getting it to work.

by Brad Fuller

> well.. I was just following the directions - I haven't done a > realtime kernel on gentoo and am using/trying the proaudio overlay. > > Yeah well, the howto uses 2.6.16 as example kernel, as 2.6.16 was the > current stable kernel when I wrote it. But hmm, Frieder still marked > 2.6.16-rt29 as the stable rt-sources in > the overlay - not sure why exactly, maybe perceived level of risk - > anyways in case of PAM and the kernel, I personally recommend using > latest ~ masked pam and =rt-sources-2.6.20-r8 :) > > > Right, I was using 2.6.16-rt29 and it's working with the pam 0.78. > I'll try the newest kernel. Ok.. I've finally got some time and am now on the newest kernel: bfuller@ives ~ $ uname -a Linux ives 2.6.20-rt8 #2 PREEMPT Thu Mar 29 21:32:54 PDT 2007 i686 Intel(R) Pentium(R) 4 CPU 1700MHz GenuineIntel GNU/Linux but, I get clicks and jumps when playing anything. I don't get clicks and jumps with standard kernels. What could I look at? dmesg didn't seem to have anything of relevance to this. Should it? tia, brad -- brad fuller http://www.Sonaural.com/ +1 (408) 799-6124

17 years, 9 months

[linux-audio-user] LAC2007 ---> LAC2008

by Simon Schampijer

Hi all, *the 5th International Linux Audio Conference *is *over.* The lac organization team 2007 had a busy but good time and we hope you enjoyed your stay in Berlin too. *As always many thanks to all participants, speakers, artists, partners and helpers! *This great event would not have been possible without your help. During the conference Martin Rumori and Frank Barknecht of the Academy of Media Arts offered to host the LAC2008 in Cologne. So see you all in cologne next year and the best wishes from Berlin. We started to put up some pictures from the lac here: http://www.kgw.tu-berlin.de/~lac2007/picslac/index.html If you have made some nice pictures they can be added here as well. Please send them to: lac2007(a)kgw.tu-berlin.de We have added a page on the LAC wiki where you can post your ideas and comments regarding the Linux Audio Conference. This could be helpful to the organizers of the upcoming ones and interesting to the ones who organized the lac2007. Best, Simon

17 years, 9 months

problems with madfu-firmware and M-Audio Transit in Ubuntu Feisty

by Hector Centeno

Hello, I'm trying to get a M-Audio Transit interface to work with Ubuntu Feisty. I downloaded, built and installed the madfu firmware loader from the sourceforge site. When I plug the device it seems that for some reason the madfuload app can't find the device and fails to load the firmware. Manually executing the same command found in 42-madfuload.rules in a terminal succeeds at loading the firmware and the device becomes usable. This is what I get in /var/log/syslog: Apr 3 12:25:14 hector-laptop kernel: [ 273.803000] usb 1-2: new full speed USB device using uhci_hcd and address 2 Apr 3 12:25:14 hector-laptop kernel: [ 273.952000] usb 1-2: configuration #1 chosen from 1 choice Apr 3 12:25:14 hector-laptop NetworkManager: <debug info>^I[1175617514.280637] nm_hal_device_added (): New device added (hal udi is '/org/freedesktop/Hal/devices/usb_device_763_2806_noserial'). Apr 3 12:25:14 hector-laptop madfuload: cannot open /proc/bus/usb/001/002: No such file or directory Apr 3 12:25:14 hector-laptop NetworkManager: <debug info>^I[1175617514.657287] nm_hal_device_added (): New device added (hal udi is '/org/freedesktop/Hal/devices/usb_device_763_2806_noserial_if0'). Apr 3 12:25:14 hector-laptop NetworkManager: <debug info>^I[1175617514.671133] nm_hal_device_added (): New device added (hal udi is '/org/freedesktop/Hal/devices/usb_device_763_2806_noserial_usbraw'). And actually /proc/bus/usb/001/002 is there but somehow madfuload can't see it (is it maybe being created after calling the script?). Executing this command in a terminal works fine: sudo /usr/local/sbin/madfuload -3 -f /usr/local/share/usb/maudio/ma006100.bin -D /proc/bus/usb/001/002 and the Transit becomes visible for alsa and jack (despite the fact that after executing the command I get this error: cannot reset device: (19) No such device ). Any help would be highly appreciated! Hector -- =============================== http://www.hcenteno.net

17 years, 9 months

[linux-audio-user] Create high-pitch noises like the mosquito device

by listreader

I saw the mosquito device that will annoy younger people, but not older people: http://www.compoundsecurity.co.uk/teenage_control_products.html Its pretty expensive. How would I begin to create that from scratch? Can a sound-card generate those frequencies? I imagine I would need a special speaker. How about an amp?, does that also need to transmit the higher freqs.? Is it like going from a bass amp to a guitar amp? (and I need to keep going?) Whats good software in linux to generate certain frequencies? thanks for any ideas, -- paul w

17 years, 9 months

Audio Performance on a Thinkpad R60 /w HDA

by Spencer Russell

Hey List, Just thought I'd let the list know how my new thinkpad is doing. I was worried when /proc/interrupts showed my HDA card on the same interrupt as one of my USB controllers and the firewire controller, especially when I was getting crazy xruns even at high latencies like 2x1024. Then I found a handy post from mlesswing on the Ardour forums. Turns out that i just added options snd-hda-intel index=0 position_fix=1 to my /etc/modprobe.d/alsa-base file, and low and behold I can get xrun-free performance at 2x64 (2.9ms latency at 44100!!) I haven't seen how running a firewire drive at the same time might effect performance, so we'll see if the IRQs end up being a problem. Overall, about 24 hours after I received it at my door I'm really happy with the Linux performance. I know people have had a lot of trouble with HDA in the past, and I'm not sure how well known this fix is, but hopefully it can help somebody. -spencer

17 years, 9 months

More fun with convolution

by Ken Restivo

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I ran a guitar through a violin. Basically used a sample of a bowed violin note as an impulse response, then ran guitar through it. Then dropped it on top of an extremely ridiculous techno beat that sounds like Autechre circa 1993, and some ominous PADSynth pads, and set it all in that 17th-Century church, just for giggles. http://www.restivo.org/blog/podpress_trac/web/83/0/glory-hole-0.2.ogg This was just a first experiment, but convolution (via JACE, Aliki) looks like it might be fruitful way to produce some really bizarre sounds. - -ken -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (GNU/Linux) iD8DBQFGEog3e8HF+6xeOIcRAqzhAKDUdtvKtF/4OxtxZaeBV1WO9/D6ywCeJZoA opiOrjzTeuZj3udu9qzJ52U= =+dA+ -----END PGP SIGNATURE-----

17 years, 9 months

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Linux-audio-user April 2007