Linux-audio-user May 2005

linux-audio-user@lists.linuxaudio.org

154 participants
186 discussions

[linux-audio-user] [OT] DIY serial input devices?

by Paul Coccoli

I've been thinking about a way to interface a footswitch to my computer for triggering things like sooperlooper and fweelin. I've got a sustain pedal for my MIDI controller on the way, but it got me thinking. I've got a perfectly good serial port on the back of my computer, doing nothing. I'd like to put it to work, but my hardware skillz are, well, lacking. I've figured out this much: you can wire a simple loopback by connecting DTR to DCD and DSR and connecting RTS to CTS. What if you insert a switch between these? E.g. connect RTS to the sleeve pin of a female 1/4" TS jack and CTS to the tip pin. Could you then plug in a sustain pedal? I've seen software that monitors the state of the pins on the serial port, so I'm not worried about that part. I'm just not sure if the hardware would work. Like when the switch is open, do you connect CTS to ground? I don't know enough about this stuff. Any hardware hackers out there? Am I crazy? I suspect there's more to it than what I've said here. Could I wire up a TRS jack and a TS jack and plug in my amp footswitch (2 switches) and a sustain pedal?

19 years, 7 months

[linux-audio-user] Re: rlimits patch - how to start app with realtime permissions?

by Jack O'Quin

[copying response to LAU] Ruben Jenster <ruben(a)hotheads.de> writes: > I'm sorry to bug you again. I know it's not your patch but I read in > the lau mailinglist that you have it working. Hope you can help a > nOOb like me. Actually, I don't. I've been too busy with other projects. I still run the realtime-lsm here. It's so easy... ;-) Jody recommended asking these questions on linux-audio-users (copied here). You are certainly not the only one having trouble configuring rlimits. > Now the question about rlimits. > I applied the patch and modified /etc/security/limits.conf according. > My user acount also belongs to the audio group, but I have no idea how to > start e. g. jackd in realtime mode. I looked several times at the wiki > and in the lau mailinglist but I havn't found a hint. Did you apply the PAM patch? > Can you tell me how to start a app as user with the rlimits patch? > Neither 'jackd -R ...' nor 'nice -n -10 jackd ..' do work. jackd -Rv -dalsa If that does not work, then things are still not configured correctly. The -v option is for debug output. Once it's working you can leave that off. -- joq

19 years, 7 months

Re: [linux-audio-user] converting sysEx from my juno-106 into something more useful

by Brian Dunn

Seems like a shame though to use a beautiful vintage juno-106 as a controller instead of the other way around :) i know what you mean. the juno sounds great, but i've got some hardware issues with using it (like i'm too cheap to buy a 1/8 in stereo adapter, and my soundcard's input jack got fried). so to me it seems like a shame to have 13 0 to 127 sliders sitting there on my desk that i can't use. >actually I only implemented the controllers towards >sysex conversion: [sequencer program]--->[juno_rose]--->[juno-106] would it be possible for a fledgeling programmer to add the other capabilites to your code, and if so, would you be willing to help me in this endevor? thankfully. Brian

19 years, 7 months

[linux-audio-user] Console sip softphones

by Tyler Spivey

Does anyone have any console sipphones besides linphone? I can't use the graphical user interface because there isn't a screen reader quite developped enough to read it. I'm behind a nat, so proxy support is a must. Thanks, Tyler

19 years, 7 months

[linux-audio-user] does Zalman ZM-RSSC 5.1 (usb sound card) work?

by Raymond Lai

I'm looking for a decent usb sound card to upgrade my laptop. Currently, I could find the following cards in my city, Toronto, Canada: 1. Creative Sound Blaster Audigy 2 NX 2. Creative Sound Blaster MP3+ 3. Zalman ZM-RSSC 5.1 4. Zalman ZM-RSA Real Surround Sound 5. M-Audio Sonica Theater 7.1 Surround Sound 6. M-Audio Transit USB Mobile Audio Upgrade I will use the card mainly for musics and movies with an Altec Lansing MX5021 (2.1) speaker set. As I'm using it with my laptop, I prefer usb-powered cards. I'm right now seriously looking at Zalman ZM-RSSC 5.1 (~US$55). Does anyone have experience with this card? If it works, how is the sound quality? If you don't know this card, what do you recommend? My buget is US$100. What card works the best so far? Thanks a lot, Raymond

19 years, 7 months

Re: [linux-audio-user] Weird JACK behaviour w/ Qjackctl

by Philip Nelson

> > This "Auto refresh..." setup option is now well considered > > deprecated, if not harmful :) and should be off all the > > time nowadays. It is just some legacy option, among a few > > others, that persist from the early days--a time when my > > laptop was almost an unreliable piece of junk for realtime > > low-latency audio work. > > Hehe, I guess you will remove this functionality in one of the > next versions :) . Why should it be off? Unless this refreshing the connections is accomplished a different way, it seems a very basic useability feature. Philip - http://blogs.xcskiwinn.org/panmanphil "There's a difference between righteous anger and just being crabby" - Barbara

19 years, 7 months

[linux-audio-user] Weird JACK behaviour w/ Qjackctl

by Christoph Eckert

Hi, when starting JACK from the command line on an USB Card Terratec Aureon 5.1 USB using /usr/bin/jackd -v -R -p64 -dalsa -dhw:3 -r48000 -p512 -n4 -P -o2 everything works well. But as soon as I use Qjackctl to control JACK with the same parameters then I get notches every 3 to 7 seconds. I'm running jackd version 0.99.0 tmpdir /dev/shm protocol 13 ALSA Driver Version 1.0.6 Linux vanilla 2.6.10 with the RT-LSM-patch applied. Anyone got a similar problem? Thanks & best regards ce

19 years, 7 months

[linux-audio-user] System Setup

by j.t.sledge＠comcast.net

Hello. First of all. I am new to the mailing list thing, so forgive me for any fumbling/mumbling that might occur. I have been trying to setup a somewhat stable audio workstation to learn the capabilites of linux audio software. Specificially, hard-disk recording with ardour, and also the assiciated dsp and editor application that one would use commony. rever, EQ, etc. I have setup a seperate system for that purpose: 3Ghz 1MB cache on Intel 915 Motherbaord, 1Gig dual chanes CAS 2-2-2 Mushkin Black LII memory, basic radeon pci card, and Audiophile 2496 card. My problem is that none of the distros out there seem to like this 915 chipset. All of the 2.6 kernels have something weird going on , where they see dual-proccessor, with hyper-threading but the system takes for ever to boot. This happens on Fedora Core 3, Mandrake 10.1, and Mandrivia 10.1 (Mandrake 10.2), and the debian, based demudi distri. The most success has been with the demudi software. Does anybody know, if I am to use the horsepower of this new equipment with linux, am I going to have to go to something like gentoo, and build everything from scratch?

19 years, 7 months

[linux-audio-user] Re: [Noteedit-devel] Announce: Noteedit 2.8.0 Beta 1

by Reinhard

noteedit-devel-admin(a)berlios.de schrieb: > I cannot compile it. In noteedit/mainframewidget.cpp around line 320, > there are some wierdness. I removed the <<<<<<< before and <<<<<<<< > after lines and it compiled fine. I'd release beta1.1 asasp. > Ups, I just saw that I had a conflict in exactly that file when I redid a checkout. I have replaced the file and also removed the .svn directories making the archive about 1MB smaller. I have uploaded a new beta-1 archive. Sorry for the accident. Best regards, Reinhard Katzmann -- Software-Engineer, Developer of User Interfaces Project: Noteedit - a score editor - http://noteedit.berlios.de Project: Pertergrin - a RPG system - http://www.pertergrin.de GnuPG Public Key available on request

19 years, 7 months

Re: [linux-audio-user] converting sysEx from my juno-106 into something more useful

by R Parker

Hi, > You could try the tiny "juno-rose" utility I wrote > just for this purpose: > > http://lumatec.be/joost/juno_rose-0.1.tar.gz > > It Maps sysex <-> controllers. Does this utility want to see a juno out there or can we use it with any sysex producing devices; software and hardware transport functions, etc? ron > Greetings, Joost Damad > > -- > The planet Andete is infamous for it's killer edible > poets. > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

19 years, 7 months

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Linux-audio-user May 2005