Linux-audio-user October 2009

linux-audio-user@lists.linuxaudio.org

141 participants
173 discussions

Review of Zoom G7.1ut guitar effects unit and Linux

by Geoff King

I thought I'd share a quick review of my newly purchased Zoom G7.1ut guitar multi-effects foot pedal and point out that it seems to be compatible with linux. This is a guitar effects unit with amp/cabinet modeling and ability to direct-in to a sound system or use a traditional guitar amp. It sounds great hooked up to a Roland KC-300 keyboard amp and monitoring speakers. It also works great when direct-in recording to my Ubuntu system via it's USB audio interface, which is the main reason I'm posting here. http://www.samsontech.com/products/productpage.cfm?prodID=1871&brandID=4 To record the guitar, it was as easy as plugging in the USB cable, making sure the Zoom was set to output to USB card (for recording) and also to amp for direct monitoring, then making settings in qjackctl. After that it was easy to record using mhwavedit, audacity, etc.. When I was finished recording the playback through the unit and into the amp worked fine. I can't really comment on the quality of the audio as I've never used direct-in audio from a guitar before, but it sounded good and was definitely EASY with it's own interface. It also has standard midi sysex functionality through normal midi ports (not usb) for saving parameters and settings according to the manual. I doubt I will use this, except to maybe backup any settings I have after a few months. I can imagine this might be useful for someone playing gigs with all sorts of different settings they don't want to lose. Based on what I read in the manual, there should be no problem using a program like simple-sysexxer to access this functionality. One important note: You definitely need to read and understand the manual to get the sounds out of it as many of the options are not obvious, especially if recording and using a non-standard guitar amp. There are many knobs and options. Once you've used it a few days and gotten used to the controls it seems intuitive. I have to applaud Zoom for keeing their interfaces standard and not fully locked into proprietary drivers or systems. I also have used a Zoom H2 (handheld recorder) with linux and it also worked fine. Some Technical Info: lsusb: Bus 002 Device 004: ID 08bb:2904 Texas Instruments Japan PCM2904 Audio Codec dmesg: [162977.541025] usb 2-2: new full speed USB device using uhci_hcd and address 4 [162977.853142] usb 2-2: configuration #1 chosen from 1 choice [162977.860121] input: Burr-Brown from TI USB Audio CODEC as /devices/pci0000:00/0000:00:1d.0/usb2/2-2/2-2:1.3/input/input7 [162977.860245] generic-usb 0003:08BB:2904.0004: input,hidraw3: USB HID v1.00 Device [Burr-Brown from TI USB Audio CODEC ] on usb-0000:00:1d.0-2/input3 [162978.514585] usbcore: registered new interface driver snd-usb-audio I hope this helps someone. Geoff

16 years

patch librarian for roland xp-30

by Atte Andre Jensen

Hi I've been using jsynthlib in that past to backup the patches on my jv-80. However after a long break I installedjsynthlib again, because now I wanna backup the patches of my new (old) xp-30 that should replace the jv-80. But jsynthlib doesn't seem to work with the xp-30, for one thing, jsynthlib (with the jv-80 driver) doesn't know about all the extra sounds available in the xp-30. Since I really don't need an editor, just a place to put patches, I'm hoping someone here could recommend a good way to go about this? -- Atte http://atte.dk http://modlys.dk http://virb.com/atte

16 years

LinuxSampler: success

by Jonathan E. Brickman

Looking pretty good. I imagine there is a much better way, but I don't know what it is. It turns out that JSampler did create an instruments.db automatically -- but it did not "format" it. After I formatted it, using (JSampler only, not Q) Window/Instruments Database, then Actions/Format Database, both J and Q began working perfectly. So my current steps to get QSampler running reliably in AVLinux, after installing all of the current LinuxSampler .deb's, are: 1. Get rid of all Java except Sun's, using Synaptic. 2. Create folder /opt/java. 3. ln -s /usr/lib/jvm/java-6-sun ./latest 4. In /etc/profile, just before the line "export PATH", add: PATH=/opt/java/latest/bin:$PATH export JAVA_HOME=/opt/java/latest export CLASSPATH=/opt/java/latest/lib/tools.jar:./ 5. Create the /var/lib/linuxsampler directory and set its permissions: mkdir /var/lib/linuxsampler chgrp audio /var/lib/linuxsampler chmod g=rwx /var/lib/linuxsampler 6. Download the .jar (binary) form of JSampler Fantasia, move it to filename /usr/local/bin/JSampler-Fantasia-0.8a-jar, and run it: java -jar /usr/local/bin/JSampler-Fantasia-0.8a-jar 7. Format the database, using the JSampler UI, Main window: Window/Instruments Database Instruments database window: Actions/Format Database And then it works :-) J.E.B.

16 years

Test if Linux is ready for audio

by Jonathan E. Brickman

The best way to test if your Linux setup is ready for audio, I think, is here: http://wiki.linuxmusicians.com/doku.php?id=system_configuration Download the .pl file, make it executable, and run it in a terminal. In other words, in a terminal: wget http://realtimeconfigquickscan.googlecode.com/hg/realTimeConfigQuickScan.pl chmod +x realTimeConfigQuickScan.pl ./realTimeConfigQuickScan.pl | less and study the results. My hardware is such that realtime kernel is not necessary, and I'm not sure about 'noatime' on the filesystems, but everything else it reports has been extremely valuable. AVLinux ran well before I did all the things it requested; after I did them, it began to run screamingly. There is a list of multimedia-oriented distros on that page, but some of the listings are alpha quality, no longer in existence, et cetera. J.E.B.

16 years

own music made with linux

by Susanne Schneider

guys, first of all: sorry for bad english :-) after some time of doing cover stuff with my little project of hobbymusic we are now able to present some own compositions on www.besonic.com/schmidt_und_schneider In a first step three songs made it to that place, some more will follow step by step. We are two people, the compositions and vocal stuff are provided by my friend Harald, while I play the Guitars (except a few rhythm tracks) and do the technical/software stuff. Recording and mixing was done in Ardour on my Lenovo R61, Lexicon Omega Studio USB or alternatively Focusrite Saffire Pro 10, OS is openSuse 11.1 with selfcompiled rt-kernel. In the song "mit Dir" I used Hydrogen for drums, Horgand for organ and bass sounds, Qsynth for some strings sounds. In the other two songs we saved time and reverted to a Boss JamStation using some ready-to-use backgroundsounds from there. Regarding Guitarsounds for recording I tried a lot - like most guitarists I think. There is some promising stuff out there in the open source world which I check out frequently, but currently I must say I lost my heart to the fabulous simulanalog guitar suite, which is running in Ardour as plugin without any problems: that Marshall sound is amazing - in direct comparison e.g. the POD2 has no chance. Now, last not least I would like to do a little advertising amongst the German members here: because it is relatively expensive to transfer money to USA we started an initiative on www.audio4linux.de to put some money together in order to support the ARDOUR project, our goal for now is min. 500 Euro, which is then transferred in one action. We already did that successfully earlier in the year, and yesterday, when downloading Ardour's new version I thought it might be a good idea to continue, I will put 50 bucks into the hat... thanks for your attention best, Susanne

16 years

How to get Midiman USB midisport 4x4 working?

by Daniel Grace

How (if it is atall possible) do I get a Midiman USB midisport 4x4 working with rosegarden? The distro I am using is Gentoo (AMD64). Thanks.

16 years

RME HDSP 9632 - amixer control

by Klaus Schulz

Hello all. I am new to the list. However I am not new to the Linux audio community. ;) Strange though that I never really heard/read about it. Anyhow -- here I am. Let see if I can find a solution to my challenge. I am running latest Alsa 1.0.21b. I just installed a RME HDSP 9632. My challenge: The machine is supposed to run headless. This requires an automatic activation of the card. Some channels and volume have to be initialized during startup without X being up and running. As it seems without starting up HDSPmixer incl. preset it is not possible to get the card going. However: The amixer control seems to allow to control the "Mixer" control with three variables. I do not have a clue how to do the intital setting via amixer - is it possible at all - what logic is behind it? Would be great if somebody could sched some light on the subject. Interesting to know would be how to achieve a "neutral" setting in terms of volume control. And how to read out the current status. THX a lot \Klaus P.S. Anybody ever thought to transfer HDSPMixer to commandline/ncurses?

16 years

Yay, -X seq

by Ken Restivo

Thanks to Paul for explaining to me how to invoke "-X seq", and the help for the ALSA backend (duh). I now can run AZR-3, with my volume pedal, and do smears all up and down the keyboard, with out any stuck notes. This did not work with a2jmidid or alsaseq2jackmidi, but it works with -X. Thanks again! -ken

16 years

multiple applications using the soundcard with alsa

by Atte Andre Jensen

Hi A question came up on my local (non-audio) lau: Is it possible to automatically mix audio from different apps (desktop apps like firefox, flash, skype, system sounds, stuff like that) with alsa. I tend to say "yes" based on things I think I head mentioned here, but couldn't find the posts, so I have to ask again. If possible, what does it take? -- Atte http://atte.dk http://modlys.dk http://virb.com/atte

16 years

Re: [LAU] yet another yoshimi bug fix, -> 0.022

by Edgar Aichinger

Am Mittwoch 14 Oktober 2009 14:15:27 schrieb Jonathan E. Brickman: > > Nah, while experimenting i tried to alter the 32bit flags with ccmake > > (using -march=i686, -O2 or removing the -msse2 because i wasn't sure if > > my AthlonXP CPU supports it) which led to even more problems. So i think > > they are in effect, and I stayed with the flags ccmake determined by > > itself, "-O3 - march=native -msse -msse2 -mfpmath=sse -ffast-math > > -fomit-frame-pointer" > > Probably is it. Take out -msse and -msse2 and -mfpmath=sse, and see > what it does. Thanks for that hint - got it running now without those flags. :) > > J.E.B. > > _______________________________________________ > Linux-audio-user mailing list > Linux-audio-user(a)lists.linuxaudio.org > http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user > Edgar

16 years

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Linux-audio-user October 2009