Linux-audio-user August 2006

linux-audio-user@lists.linuxaudio.org

146 participants
124 discussions

[linux-audio-user] Beginner singing, music theory (guitar) and ear training, solfege?

by Loki Davison

G'day all, I'm keen on learning to sing in my now extensive spare time. Anyone now of any good books or sites aimed at beginner singers? I'm also wondering if doing some ear training stuff would be good. I'm mostly interested in improving my guitar playing but i'm guessing this would really help over all. Should i use GNU solfege for ear training? Is there a good intro for beginners somewhere? guitarnoise.com is the most useful stuff i've found so far. Anyone know a good book on any of these topics? If possible focused towards guitar, music theory, ear training, etc and not one of those horrible school music style method books. I have no interest in sing mary has a little lamb. ;) Loki

18 years, 4 months

Re: [linux-audio-user] High sample rate cards

by Tim Howard

st wrote: > BJaY wrote: > > Hi, > > I'm looking to do some high sample rate stuff - 500kHz or more > > Where did you get a microphone and preamp that would respond at > that frequency? You will be up into maritime radio communication > band, approaching AM radio band. I wonder if you will have problems > with interference. > Common misconception... Very high frequency audio does not equal electromagnetic radiation (radio, etc.). Audio is the compression and expansion of air, so it isn't really affected by EMI. Are you using another ultrasonic transducer to receive the signal? Is it necessary to capture the entire waveform, or just the envelope? If you need an accurate waveform, your best bet would likely be to build your own A/D circuit. Otherwise, rectify it, use an LP filter, and you're good to go. TimH

18 years, 4 months

[linux-audio-user] Just look at what you have done!

by Drucer Ninetynine

There was a recent post on Ardour web page forum and somebody was requesting Ardour demo songs to be included with Linux mediastation keyboard. Now I had never heard of such a device before, but I got curious and found some demos. This is mindblowing stuff! I had absolutely NO IDEA Linux audio was this far! You Linux audio developers have done absolutely amazing job! And can you imagine you can have this all without buying any hardware!? The software is out there, just download it! Check this out! http://www.lionstracs.com/download/video/piano.wmv ..some other stuff here: http://www.lionstracs.com/site/index.php?option=content&task=view&id=35&cat… ..some more: http://www.lionstracs.com/demo/sounds/dreams.mp3 http://www.lionstracs.com/demo/sounds/arpeggio.mp3 __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

18 years, 4 months

[linux-audio-user] [ANN] QLoud v.0.14

by Andrew Gaydenko

QLoud is a tool to measure loudspeaker frequency response. Find it here: http://gaydenko.com/qloud/ Changes: - a crash (hitting "Plot" with empty IR list) is fixed, - pickers values are rounded now, - multiple minor fixes and cleanup, - now "Window, msec" is a time from IR peak to cutted reverberations, which is more intuitive, I think (earlier it was equal to applied window width itself). Direct screenshot links: - main window with few SPL plots: http://gaydenko.com/qloud/screenshots/shot01.png - IR-power plot: http://gaydenko.com/qloud/screenshots/shot02.png Andrew

18 years, 4 months

[linux-audio-user] Jokosher - new audio app

by Drucer Ninetynine

Looks like we have yet another promising Linux audio app. "Jokosher is a simple yet powerful multi-track studio. With it you can create and record music, podcasts and more, all from an integrated simple environment." Released under GNU GPL. http://www.jokosher.org/ http://en.wikipedia.org/wiki/Jokosher __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

18 years, 4 months

[linux-audio-user] In Synch

by lanas

Folks, 1) I've seen video demoes of the Freewheeling sequencer. I know there's a more trendy word than 'sequencer' when describing those softwares that let's you input loops thru MIDI or otherwise, but you see what I'm describing. On a single Linux box, is it possible to run two instances of such a 'sequencer' and have two people (using two-headed screen setup) making that kind of sequences in synch ? I mean, in a transparent manner that does not require code change. If not, is it possible to transparently synchronize two PCs running that kind of 'sequencer' so that real-time performance from two players (or more !) can be achieved ? 2) Independent of the outcome above, is it possible to actually record a live perfomance done on such a 'sequencer' as Freewheeling to an audio track ? Cheers, Al

18 years, 4 months

[linux-audio-user] jackd acts weird

by eun.sung

hi list on a new system, i can't understand what happens with jack i can launch jackd - seems to work normally - create some connections with terminatorX for example but when i "power" on terminatorX - the same thing happens with kluppe (haven't tried yet with other apps) - the audio file doesn't get read at all although it gets read when i use the app with a direct ALSA output i tried both stable and svn versions of jack and run that all on a 2.6.17.11-molnar's patched kernel do you have an idea about what happens here? thanks greetings

18 years, 4 months

[linux-audio-user] Centrino Duo and AD1981HD Sound Card: Good for Linux Audio?

by Spencer Russell

Hey there collective intelligence, I have an oppurtunity to get a really good deal on an HP NC4400, and as I'm looking for a new laptop, I'm thinking of grabbing it. It's got 1.5 Gigs of RAM, an SATA 5400RPM hard drive, and a 2GHz Centrino Duo. Any experiences with this sound codec? It seems to be supported with the snd-intel-hda alsa module, but I can't find any info about performance. I think that it's used in a lot of the newer HP and IBM laptops. What distinguishes an "HD" sound card? One of the reasons I've been looking to replace my current laptop is that the sound card and video card seem to compete for control of whichever bus they're on, so I get lots of xruns with any latency less than about 60ms. This computer won't be used for my heavy multitrack recording sessions, I mostly want it for synth and audio processing, maybe also generating visuals in a live performance environment, so the low latency is pretty critical when I've got audio running through the computer for processing. Thanks a lot! spencer Thanks a lot, spencer

18 years, 4 months

Re: [linux-audio-user] Commercial audio software on Linux

by Sampo Savolainen

Quoting Davy Wentzler <info(a)audio-evolution.com>: > Hello, > > First of all, this is my first post here on the list. I'm in the process > of porting my audio hard disk recording program 'Audio Evolution' > from AmigaOS4 (running on PowerPC) to wxWidgets. This will allow > me to release it more easily on other platforms like Windows and Linux. Iteresting > Although using wxWidgets means that a big part of the program is > portable, some other parts like audio and plug-ins (think LADSPA, JACK) > would have to be written specifically for Linux. Now comes the big > question: since this is commercial software (with a price between > 35 and 45 euro), would it be worth the effort to release it on Linux? >From the screenshot you posted, it seems that your software doesn't do anything which Ardour couldn't do. I think the quesitons just comes back to you: What does your program do that makes it worth the 35-45 euro for someone who already runs Ardour / MusE / Rosegarden? Sampo

18 years, 5 months

[linux-audio-user] ZynAddSubFX segfaults

by juuso.alasuutari＠tamperelainen.org

Hello. I have a problem with ZynAddSubFX. After the last time I compiled it, it segfaults on startup. Here's the part of Valgrind output that seems most relevant: ==19913== Thread 2: ==19913== Invalid read of size 4 ==19913== at 0x80ABA8A: thread1(void*) (in /usr/bin/zynaddsubfx) ==19913== by 0x40D9156: (within /lib/libpthread-2.3.6.so) ==19913== by 0x4441E4D: clone (in /lib/libc-2.3.6.so) ==19913== Address 0x0 is not stack'd, malloc'd or (recently) free'd ==19913== ==19913== Process terminating with default action of signal 11 (SIGSEGV) ==19913== Access not within mapped region at address 0x0 ==19913== at 0x80ABA8A: thread1(void*) (in /usr/bin/zynaddsubfx) ==19913== by 0x40D9156: (within /lib/libpthread-2.3.6.so) ==19913== by 0x4441E4D: clone (in /lib/libc-2.3.6.so) I'm out of luck trying to figure out what might have changed enough to cause this behavior after the last time I compiled. On top of that I'm not a coder and can only guess how to parse the sources for the cause of this. I've built kernel version 2.6.17.11 after the last time I compiled ZynAddSubFX, the previous one was 2.6.17.7. I haven't changed any kernel config settings. I've also compiled a bunch of other stuff as well, but none of them are system internals or direct dependencies to ZynAddSubFX. I'd be grateful if anyone could help me debug this. It's a pity that ZynAddSubFX is so lightly maintained - it's simply the best sounding Linux soft synth I've ever tried, but unfortunately seems to have bugs left in it. Thanks, Juuso Alasuutari ---------------------------------------------------------------- This mail sent through L-secure: http://www.l-secure.net/

18 years, 5 months

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Linux-audio-user August 2006