Linux-audio-user December 2012

linux-audio-user@lists.linuxaudio.org

116 participants
113 discussions

by Kjetil Matheussen

Paul Davis: > > The most common formats for "loops defined inside an audio file" have > historically been non-WAV (or extensions to wav), such as REX, and > proprietary. > > The WAV spec does include the concept of a playlist, consisting of > cue > points and lengths. By themselves, these don't really define "loops" > in a > way that is generally going to be clear to the user. I don't know of any official specifications of it, but it's common to have a cue called "Loop start", and a cue called "Loop End". > > libsndfile can definitely read these from the file, but i'm not sure > what > an app would do with them. providing a sample with a loop point(s) > defined > would be good. Well, I didn't find any way to use libsndfile to get the cue points. They are displayed using sndfile-info, but I don't think you can get the numbers via the libsndfile api without parsing the text output of the functions libsndfile-info calls. It's simple to implement without libsndfile though. Just steal the code from radium. :-)

12 years, 5 months

My first album ever is finally done!

by Gabbe Nord

Hello everyone! I finally finished my first real project, which I call "Insomnilund". It's an 8 track album with a mixture of instrumentals in different genres. Mainly I'd say it's hiphop-influenced, but there's some acoustic guitars and other stuff in there aswell! I want to sincerely thank anyone who has helped me, feedbacked me and just simply talked to me on IRC hehe. It's been a long and at times tedious process, but it feels very good to actually have finished something. Hopefully someone might even like it! =) It's available in several forms and formats (Flac, Ogg, MP3, all archived in zip) on http://www.ironink.se/music.htm . It's also available on both Bandcamp ( http://zthmusic.bandcamp.com ) and Soundcloud ( http://soundcloud.com/zthmusic/sets/insomnilund ), and I even started a Facebook-page for fun, if anyone feel like they want to provide me with my first like hehe =) http://www.facebook.com/pages/ZTHmusic/479501088740406 . Thanks anyone for listening! I hope you enjoy! Regards, Gabriel

12 years, 5 months

Avantgarde bizarre rock made with Linux: Sebkha-Chott Ne[XXX]t Epilog + Video Clip

by Aurelien

Hi, A long time I didn't write here, and as a result, too much things to tell... Let's keep (as) short (as possible) an simple. All that's is spoken about below is Free Art and has been released using free softwares (and often free hardwares) only. 1. New Album Ne[XXX]t Epilog v1.1 available for download and streaming 2. New Video clip Nigla[h] I 3. New tour 4. Anything New 1. *New Album* Ne[XXX]t Epilog v1.1 available for download and streaming I don't know if I had time to speak about it already on this list, pretty sure I posted a first sample a few monthes ago. So, the Ne[XXX]t Epilog CD has been released by Muséa Records on 22nd of September 2012. And the "digital liberation" just happened that very 25th of November 2012, the album is now available for free download and streaming on the band website[1] or on bandcamp[2]. [1] http://www.sebkhachott.net/spip?The-Ne-XXX-t-Epilog [2] http://sebkhachott.bandcamp.com/album/ne-xxx-t-epilog-v11-the-digital-liber… As I might have told you already, when creating this album, we wanted to think about the concept of "what is a net-album", and going a bit further than just havin several tracks one after each other. That's why we finally produced that album as an "evolving album", an album which shapes change in time, with addition by ourselves as well as additions by other (sources are also available, see below). The idea comes both from Frank Zappa and the way he re-used his material several times, in different contexts, and from Antoine Moreau (one of Free Art License co-writers) who thinks the art as a stream, and the art pieces as snapshots of it. So, the digital version, freshly released is nothing but the v1.1 of the Ne[XXX]t Epilog, the v1.0 being the physical edition (that we won't publish digitally, but it's free art, so...). It already is 10 minutes longer (90 minutes) than the previous version, and in that way digital distribution is fun, as we don't have duration limitation!! Sources for this album should be found on Spider Jessica's website[3], but we have some problems with it, and it's actually not in a working state, so if you want to be a bêta-tester, just ask. Sources are ardour files, versionned using git and git-annex with the ardour-git[4] tool I told you once. [3] http://spiderjessica.org [4] https://github.com/AMMD/ardour-git One last word to credit the softwares that were used on this album: Jack, ALSA, FFADO, Ardour2, Non-mixer, seq24, Alsa Modular Synth, Tapeutape, Mididings, PureData, Ghislame, LADSPA/LV2 plugins (many, can't list them, but including Tape Delay Simulation as a must have!!), Ladish and associated tools. Debian GNU/Linux was the main OS, alongside with TangoStudio for several things. 2. *New Video Clip* Nigla[h] I When releasing the album on 22nd of September 2012, we also released a new video clip, based on the tune Nigla[h] I from the Ne[XXX]t Epilog. You might look or get this clip from the band's website[5], or from youtube[6]. [5] http://sebkhachott.net/spip/?Nigla-h-I-OFFICIAL-Wideo-Clip [6] http://www.youtube.com/watch?v=6cD2A6t-n4k (16 minutes in 720p, don't know where you live, but it might last a bit to dl it!) This clip has been realised using: kdenlive, lives, frei0r plugins. Debian GNU/Linux was used as OS. 3. *New Tour* We'll be on tour with our Totalizm show (the one including 5 Debian stations to operate all sounds/monitors/processing and lights/VJ-ing + synchronization) from April to June in Europe. Don't hesitate to contact orl(a)ammd.net if you want to get us playing by you, or if you have places to advice to us! 4. Sure our website[7] is a bit weird (actually, our music is wuite weird too, hu), but it's now fully translated in English, so don't hesitate to visit, and discover many many files (audio, video, photos), all free art, and so on... [7] http://www.sebkhachott.net And if you want to get informed a bit more regrlaruly, and in a bit more funny way, just ask me to add you to Sebkha-Chott's newsletter. Well, here it is!! Aurélien a.k.a Wladimir Ohrelianov II -- Aurélien

12 years, 5 months

Christmas album produced in Linux

by Jason Jones

Just in case any of you missed it, this is an album a friend and I produced using Linux (tracking, mixing, editing, and mastering using Mixbus). It's not your average "Christmas" album, either. Give it a listen and let me know what you think! http://herodthefink.bandcamp.com/album/back-to-337-2 --Jason

12 years, 5 months

ANN: CMKeyboard

by Patrick Shirkey

Announcing CMKeyboard - Clutter MIDI Keyboard http://djcj.org/cmkeyboard CMKeyboard is a 128 note ALSA MIDI virtual piano keyboard spanning from C-1 to G9 written in python3 and taking advantage of the latest Clutter (>1.12.2) features to enable scrolling and opengl goodness. It is a stand alone program which can also be embedded into other python3 applications as a class library. It uses code from the very handy pyclutter-widgets project for the rounded rectangles of the key buttons. The code demonstrates use of Clutter.ScrollActor(), GtkClutter.Embed(), layering of multiple clutter actors, handling of events including: "button-press-event" & "key-press-event". Suggestions for features and improvements welcome. Enjoy! -- Patrick Shirkey Boost Hardware Ltd

12 years, 5 months

Music made with linux: Modlys - Julen har bragt

by Atte

Hi Today is the first day of advent, and I've just released a new version of the Danish christmas carol "Julen har bragt" (B.S.Ingemann). Music and melody are new, while the lyrics are taken from the original carol. http://music.modlys.dk/track/julen-har-bragt https://dl.dropbox.com/u/4343030/julen_har_bragt.mp3 Enjoy! -- Atte http://atte.dk http://modlys.dk

12 years, 5 months

Music made with linux: Modlys - Her kommer Jesus, dine små

by Atte

Hi! Today is the second sunday of advent. I've done a new version (new melody and music) of the Danish christmas carol "Her kommer Jesus, dine små" (Brorson). http://modlys.bandcamp.com/track/her-kommer-jesus-dine-sm https://dl.dropbox.com/u/4343030/her_kommer_jesus_dine_smaa.mp3 I hope you enjoy it! -- Atte http://atte.dk http://modlys.dk

12 years, 5 months

Re: [LAU] IRQ and RT question

by Ralf Mardorf

On Thu, 2012-12-06 at 10:49 -0600, Aaron Krister Johnson wrote: > IRQ settings My sound card (snd_hdsp) does share IRQ 18 with the graphics (radeon), when using older kernels, with newer kernel the graphics gets IRQ 43. ### Old kernel Ubuntu Studio Precise: spinymouse@precise:~$ service rtirq status PID CLS RTPRIO NI PRI %CPU STAT COMMAND 93 FF 90 - 130 0.0 S irq/8-rtc0 86 FF 85 - 125 0.0 S irq/18-ohci_hcd 91 FF 84 - 124 0.0 S irq/18-ohci_hcd 715 FF 83 - 123 0.0 S irq/18-radeon 765 FF 82 - 122 0.0 S irq/18-snd_hdsp 781 FF 70 - 110 0.0 S irq/20-snd_ice1 787 FF 69 - 109 0.0 S irq/21-snd_ice1 80 FF 60 - 100 0.0 S irq/19-ehci_hcd 82 FF 60 - 100 0.0 S irq/16-ohci_hcd 84 FF 59 - 99 0.2 S irq/17-ohci_hcd 88 FF 58 - 98 0.0 S irq/17-ohci_hcd 92 FF 55 - 95 0.0 S irq/1-i8042 20 FF 50 - 90 0.0 S irq/9-acpi 68 FF 50 - 90 0.4 S irq/22-ahci 257 FF 50 - 90 0.0 S irq/14-pata_ati 262 FF 50 - 90 0.0 S irq/15-pata_ati 296 FF 50 - 90 0.1 S irq/22-firewire 590 FF 50 - 90 0.0 S irq/7-parport0 1052 FF 50 - 90 0.0 S irq/42-eth0 3 TS - 0 19 0.2 S ksoftirqd/0 9 TS - 0 19 0.2 S ksoftirqd/1 spinymouse@precise:~$ uname -r 3.2.0-23-lowlatency ### New kernels Ubuntu Quantal: spinymouse@q:/mnt/music/quantal/01song$ service rtirq status PID CLS RTPRIO NI PRI %CPU STAT COMMAND 60 FF 90 - 130 0.0 S irq/8-rtc0 619 FF 85 - 125 0.0 S irq/20-snd_ice1 621 FF 85 - 125 0.0 S irq/18-snd_hdsp 622 FF 85 - 125 0.0 S irq/21-snd_ice1 50 FF 80 - 120 0.0 S irq/19-ehci_hcd 53 FF 80 - 120 0.0 S irq/16-ohci_hcd 54 FF 79 - 119 0.0 S irq/17-ohci_hcd 56 FF 78 - 118 0.0 S irq/18-ohci_hcd 57 FF 78 - 118 0.0 S irq/17-ohci_hcd 58 FF 77 - 117 0.0 S irq/18-ohci_hcd 59 FF 75 - 115 0.0 S irq/1-i8042 21 FF 50 - 90 0.0 S irq/9-acpi 43 FF 50 - 90 0.7 S irq/22-ahci 225 FF 50 - 90 0.0 S irq/14-pata_ati 226 FF 50 - 90 0.0 S irq/15-pata_ati 266 FF 50 - 90 0.2 S irq/22-firewire 490 FF 50 - 90 0.0 S irq/7-parport0 530 FF 50 - 90 0.0 S irq/43-radeon 955 FF 50 - 90 0.0 S irq/42-eth0 3 TS - 0 19 0.4 S ksoftirqd/0 10 TS - 0 19 0.4 S ksoftirqd/1 spinymouse@q:/mnt/music/quantal/01song$ uname -r 3.5.0-18-lowlatency spinymouse@q:/mnt/music/quantal/01song$ service rtirq status PID CLS RTPRIO NI PRI %CPU STAT COMMAND 62 FF 90 - 130 0.0 S irq/8-rtc0 781 FF 85 - 125 0.0 S irq/18-snd_hdsp 820 FF 85 - 125 0.0 S irq/20-snd_ice1 841 FF 85 - 125 0.0 S irq/21-snd_ice1 54 FF 80 - 120 0.0 S irq/19-ehci_hcd 55 FF 80 - 120 0.0 S irq/16-ohci_hcd 56 FF 79 - 119 0.0 S irq/17-ohci_hcd 58 FF 78 - 118 0.0 S irq/18-ohci_hcd 59 FF 78 - 118 0.0 S irq/17-ohci_hcd 60 FF 77 - 117 0.0 S irq/18-ohci_hcd 61 FF 75 - 115 0.0 S irq/1-i8042 24 FF 50 - 90 0.0 S irq/9-acpi 46 FF 50 - 90 0.8 S irq/22-ahci 212 FF 50 - 90 0.0 S irq/14-pata_ati 213 FF 50 - 90 0.0 S irq/15-pata_ati 286 FF 50 - 90 0.2 S irq/22-firewire 649 FF 50 - 90 0.0 S irq/7-parport0 757 FF 50 - 90 0.1 S irq/43-radeon 988 FF 50 - 90 0.0 S irq/42-eth0 3 FF 1 - 41 0.4 S ksoftirqd/0 15 FF 1 - 41 0.4 S ksoftirqd/1 spinymouse@q:/mnt/music/quantal/01song$ uname -r 3.6.5-rt14 The order of the audio cards is fixed, I wonder why the hdsp and ice cards get different IRQ orders, but with equal priorities. I'll replace ... spinymouse@q:/mnt/music/quantal/01song$ grep RTIRQ_NAME_LIST /etc/default/rtirq RTIRQ_NAME_LIST="rtc snd usb i8042" ... by "rtc snd_hdsp snd_ice1 snd usb i8042" or similar. I suspect the priorities still will be equal. Sometimes the rtirq packages doesn't fit to the packaged kernel version. To get rid of other stuff sharing the IRQ with the graphics, I unbind some devices by a script: spinymouse@q:/mnt/music/quantal/01song$ sudo bash tuning bluetooth stop/waiting cups stop/waiting ############################## $ /etc/init.d/rtirq status PID CLS RTPRIO NI PRI %CPU STAT COMMAND 62 FF 90 - 130 0.0 S irq/8-rtc0 781 FF 85 - 125 0.0 S irq/18-snd_hdsp 54 FF 80 - 120 0.0 S irq/19-ehci_hcd 55 FF 80 - 120 0.0 S irq/16-ohci_hcd 56 FF 79 - 119 0.1 S irq/17-ohci_hcd 59 FF 78 - 118 0.0 S irq/17-ohci_hcd 61 FF 75 - 115 0.0 S irq/1-i8042 24 FF 50 - 90 0.0 S irq/9-acpi 46 FF 50 - 90 0.0 S irq/22-ahci 212 FF 50 - 90 0.0 S irq/14-pata_ati 213 FF 50 - 90 0.0 S irq/15-pata_ati 649 FF 50 - 90 0.0 S irq/7-parport0 757 FF 50 - 90 0.0 S irq/43-radeon 988 FF 50 - 90 0.0 S irq/42-eth0 3 FF 1 - 41 0.1 S ksoftirqd/0 15 FF 1 - 41 0.1 S ksoftirqd/1 $ grep 18: /proc/interrupts 18: 0 4 IO-APIC-fasteoi snd_hdspm Sun Dec 9 10:53:04 CET 2012 - 3.6.5-rt14 - Ubuntu 12.10 \n \l spinymouse@q:/mnt/music/quantal/01song$ cat tuning #!/bin/bash # sudo bash tuning - Ubuntu Studio Quantal # 2012/Nov/04 ### http://www.mythtv.org/wiki/PCI_Latency ### http://wiki.linuxmusicians.com/doku.php?id=system_configuration#pci_bus_lat… ### Bluetooth service bluetooth stop ### Network #service network-manager stop #service networking stop # does cause serious issues #modprobe -r r8169 # Ethernet NIC driver ### TerraTec EWX 24/96 modprobe -r snd_ice1712 ### Others modprobe -r firewire-ohci modprobe -r firewire_core service cups stop modprobe -r ppdev # parallel port modprobe -r lp # printer ### Unbinding devices echo -n "0000:00:13.2" > /sys/bus/pci/drivers/ohci_hcd/unbind echo -n "0000:00:13.4" > /sys/bus/pci/drivers/ohci_hcd/unbind ### Log file l="log/tuning.log" #echo "$ lspci -v " > $l #lspci -v >> $l #echo >> $l echo "$ /etc/init.d/rtirq status " > $l /etc/init.d/rtirq status >> $l echo "$ grep 18: /proc/interrupts" >> $l grep 18: /proc/interrupts >> $l echo >> $l echo -n $(date)" - "$(uname -r)" - " >> $l cat /etc/issue >> $l echo "##############################" ; cat $l exit 0 See the links in the script for more information. Hth, Ralf

12 years, 5 months

Suppress "netxrun amount" messages?

by Grant

I run jackd automatically at boot, and sometimes my console fills up with "netxrun amount" messages. Everything still seems to work fine so I'm not worried about the condition, but is there any way to prevent the messages from making the console unusable? - Grant

12 years, 5 months

Using an RME Multiface II as a DAC/ADC converter box

by Brent Busby

Currently my recording setup is an RME Multiface II connected to their PCI-E card, which of course works great in Jack. I'd like to find a way to take advantage of the 8 ADAT i/o's so I could have 16 i/o's in use total. The funny thing is though that almost all the standalone converter boxes made by RME, Lynx, and just about everyone else that have 8 i/o's and an ADAT port are around $1700-2000 USD. It seems odd that RME can manage to put 8 analog i/o's with nice converters into a Multiface II box and sell it for $700-900 but they can't give you the same thing without the computer uplink for less than $1700. Look at the comparative prices to see what I mean: http://www.sweetwater.com/store/detail/Multiface2 http://www.sweetwater.com/store/detail/ADI8ProDS/ I don't know what more the ADI-8 series would be giving me that the Multiface doesn't, but whatever it is, I don't think I need it...especially not for $1900. So do you think it would be possible (or weird?) to just get another Multiface box and hook it up to my first one via the ADAT and word clock ports, and have it provide another 8 i/o's visible from the first one's mixer as ADAT channels? Would that even work? The pertinent thing here is that I *wouldn't* be getting it its own PCI card -- it would entirely be a slave of the first Multiface (provided that's possible). It seems silly, but maybe not so silly if it could save about $1000. -- + Brent A. Busby + "We've all heard that a million monkeys + Sr. UNIX Systems Admin + banging on a million typewriters will + University of Chicago + eventually reproduce the entire works of + James Franck Institute + Shakespeare. Now, thanks to the Internet, + Materials Research Ctr + we know this is not true." -Robert Wilensky

12 years, 5 months

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Linux-audio-user December 2012