Linux-audio-user March 2010

linux-audio-user@lists.linuxaudio.org

132 participants
139 discussions

by Scott

Something I've always wanted to do was see how accurate my singing was by using something that provides visual cues based on pitch. The CLAM project recently released some really awesome looking software[1] that does this when applied to existing files. I'm looking for something that does this in real time via jack. Before I get neck deep in exploring their software does anyone know if this is the right software to achieve this goal? Is there something else out there already that I should consider? [1]http://www.youtube.com/watch?v=xVmkIznjUPE -Scott

14 years, 9 months

Syncing seq24 with Ardour (or vice-versa) and bpm adjust

by lanas

All, What I'd like to do is basically simple. Have a click track in one seq24 pattern, start it, and record accoustic guitar in Ardour. Then have seq24 ready for some MIDI input (using any sequence length), and press play in Ardour to hear the accosutic guitar, the click track being played by seq24, and input MIDI notes into seq24. Repeat, rinse, add many seq24 sequences and Ardour tracks. So I'm setting Ardour for jack transport and master. seq24 options are jack transport, master conditional and live mode. Who adjusts the bpm ? Changing the bpm in seq24 does nothing as it stays at 120. I haven't found a bpm option in Ardour (always shows 120) nor in qjackctl (same, always 120). Thanks.

14 years, 9 months

Outboard gear users: What MIDI interface are you using?

by Rob Wentz

With soooooo much stinkin attention and emphasis put towards softsynths these days, I'm curious... what are all you *other* linux audio musicians who actually still use outboard gear (more than relying on softsynths) using as a MIDI interface for your linux sequencers?? bonus points for anything that gives me more than 4 ports of i/o. I'm using six pieces of midi gear in my studio these days, so a 4 port does me no good, unless an arguement can be made that 2x 4-port midi i/os could be more stable than one 8port i/o. (as I've heard before but has never proved true for me).. . I'm using a motu midi express XT on one machine and a Motu MTP AV on another. (both parallel devices) frankly neither have ever been completely preferable to use in linux by any stretch, so i stick to this toy of a box called a midisport 2x2 when sequencing midi in linux and just use the motus on apple and ms OSs. Man I do have to say I miss the pre-VST days. sorry, but things were better (albiet a bit more pricey) then. thanks! -Rob

14 years, 9 months

M-Audio Profire Lightbridge

by Svend-Erik Kjær Madsen

Hi Has anyone succeeded in using such a device on Linux ? /Sv-e

14 years, 9 months

Re: [LAU] Outboard gear users: What MIDI interface are you using?

by Gordon JC Pearce

On Fri, 2010-03-12 at 18:00 -0800, Rob Wentz wrote: > Why is it madness to not daisy chain midi devices? With one device to > a port I'm very easily able to route any midi device to control > anything.. I prefer this in my studio. > > Any reason you find that to be "madness"?? You can do that with fewer interfaces and group devices by port. Fewer interfaces means less to go wrong - and things *will* go wrong. As I replied to another poster, unless something uses a lot of channels (like a couple of my samplers) then I tend to group stuff I use together onto the same port. It helps me visualise what's going where. Your way of working might be different though. > Certainly the days of midi is not gone and past... not my > insinuation.. however it seems that with yesterdays r+d and todays > computer speeds we should be finding less not more complaints > regarding tight midi timing with midi interfaces. I've found PCs to be pretty crap with regard to MIDI timing, which is why I've pretty much entirely stoppped using them for sequencing. > Any opinions on the midi interface with the most robust driver support > in linux?? Thanks a lot for the replies so far. Anything that doesn't need a specific driver for Mac OSX will work perfectly in Linux. Generic usb-midi is a solved problem ;-) Gordon MM0YEQ

14 years, 9 months

OT: Interesting article on MIDI timing

by Josh Lawrence

I found this to be interesting: http://www.velvetacidchrist.com/2010/03/08/sequencing-atari-st-cubase-2-0/ (site is pretty heavy on graphics) summary for the lazy: person did a test of various MIDI sequencers on various platforms, the Atari STe was the winner. -- Josh Lawrence http://www.hardbop200.com

14 years, 9 months

simple commandline player for jack

by Björn Lindig

Hi, I started playing arround with the jack example-clients. And I read through james' toutorial at dis-dot-dat.net (I think it is great, easy to understand and very helpful). Now I would like to continue practicing. As it would be a very useful tool for me, I would like to write my own jack-player, similar to aplay or soxs play but without having to add options to make it connect with jack. Now I wounder if anybody around here did this before and would be willing to share his code to support an amateur? Best regards, Bjoern

14 years, 9 months

question about dynamic ticks

by Josh Lawrence

I've googled for this, and didn't really understand the answers, so I thought I would come here... is enabling dynamic ticks and setting the timer to anything (say, 1000hz) mutually exclusive settings? in other words, can you enable dynamic ticks *and* set your config_hz setting? what should you do here? -- Josh Lawrence http://www.hardbop200.com

14 years, 9 months

Got a bit of a problem

by Folderol

With trying to keep up with new versions of Zyn, Yoshimi & Rosegarden my system is getting very fragile. Originally based on 64studio V3 (beta) I've had to shoehorn bits in from repositories as new as debian squeeze. It only now takes the slightest mistake with an upgrade before the whole lot comes crashing down around my ears :( I've also made several attempts with ubuntu studio but found that quite hopeless on every occasion. After the most recent collapse I tried a different approach. I installed a fresh debian squeeze then added rt kernels from http://oselas.org/software/linux-rt/debian_en.html I installed both the nnn.29 and nnn.31 versions so I could try them both and see what differences there were. In fact they seem to behave about the same. They work, but performance is very poor. Jack seems to want to boot things out very quickly. With the latest (nio) build of Zyn the sound breaks up with the processors at around 45%, at about the same level Yoshimi gets booted out by jack. Previously I could get up to the 60-70% mark with these, and they never actually got booted - just sound breakup. The Rosegarden/Zyn/Jammin combo I used quite a bit in the past is quite unstable. Rosegarden even seems to lose the timing! I've done the usual settings in /etc/security/limits.conf but wonder if there are any other performance settings I'm should to alter elsewhere. As if this isn't enough, I can no longer get my MIDIsport working. It identifies itself quite correctly with the script I run, but then comes back with the message, 'can't open for input'. Needless to say, this is extremely frustrating. I don't want to go through the day-and-a-half procedure of rebuilding from the old 64studio again - and risking adding just the bit that breaks it all again - but I'm at a complete loss as to how to resolve this. -- Will J Godfrey http://www.musically.me.uk Say you have a poem and I have a tune. Exchange them and we can both have a poem, a tune, and a song.

14 years, 9 months

building jcgui

by Brett McCoy

Hi, I am trying to build the latest jcgui on gentoo and it's not finding my installation of jack: idragosani@localhost ~/src/jcgui-0.7 $ jackd --version jackdmp 1.9.5 Copyright 2001-2005 Paul Davis and others. Copyright 2004-2009 Grame. jackdmp comes with ABSOLUTELY NO WARRANTY This is free software, and you are welcome to redistribute it under certain conditions; see the file COPYING for details jackdmp version 1.9.5 tmpdir /dev/shm protocol 7 idragosani@localhost ~/src/jcgui-0.7 $ ./waf configure Checking for program g++ : ok /usr/bin/g++ Checking for compiler version : ok 4.3.4 Checking for program cpp : ok /usr/bin/cpp Checking for program ar : ok /usr/bin/ar Checking for program ranlib : ok /usr/bin/ranlib Checking for g++ : ok Checking for jack >= 0.109.1 : Package "jack (>= 0.109.1)" could not be found or the found version is too old. /home/idragosani/src/jcgui-0.7/wscript:55: error: the configuration failed (see config.log) Jack 1.9.5 was built and installed from source, so everything should be there. What am I doing wrong? -- Brett ------------------------------------------------------------ "In the rhythm of music a secret is hidden; If I were to divulge it, it would overturn the world." -- Jelaleddin Rumi

14 years, 9 months

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Linux-audio-user March 2010