Linux-audio-dev

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3 participants
7535 discussions

[LAD] Synth/Sampler why the distinction?

by James Morris

Hi, Since working on Petri-Foo I keep returning to the idea that perhaps it would be better to add a sampler-waveform to Yoshimi or another soft-synth. Too bad I'm not that great a coder. Anyway, the idea seems so obvious now. Are there any good reasons for why not? Just an idea I wanted to put out. James.

14 years, 8 months

[LAD] io GNU/Linux .... a multimedia live system based on Debian SID

by MK aka El Doctor

Hi there :) Better later than never... just wanted to let you know about the existence of a live dvd/usb that, I hope, may interess some linux audio adictos here :) "io GNU/Linux is a live system that turns almost any computer into a professional multimedia workstation. It includes a real-time enabled kernel and a great collection of free software for all uses (sound, video, graphics, internet and more)." http://sourceforge.net/projects/io-gnu-linux/ It's based on Debian SID and built whith the Debian Live tools. JACK2 combined with Ladish/Laditools is used as default sound server (you may need first to set up phonon to prefer JACK over Alsa for KDE related apps) Don't hesitate to give it a try and for sure, any feedback more than welcome. Hope this helps, cheers ;) MK

14 years, 8 months

[LAD] Suil Lv2 UI: Unable to wrap UI type

by Harry Van Haaren

Hey all, I'm having a problem instantiating the UI of the parametric EQ by Nedko & Fons. ( http://nedko.arnaudov.name/soft/lv2fil/trac/wiki/WikiStart ) I can instantiate the Invada suite no problem. They have a http://lv2plug.in/ns/extensions/ui#GtkUI type UI & the host is also Gtk. instance = suil_instance_new( suilHost, 0, // pass a pointer to the controller objects here " http://lv2plug.in/ns/extensions/ui#GtkUI", // target UI widget type " http://nedko.aranaudov.org/soft/filter/2/mono", // plugin URI " http://nedko.aranaudov.org/soft/filter/2/gui", // plugin UI URI " http://lv2plug.in/ns/extensions/ui#external", // plugin UI TYPE URI "/usr/lib/lv2/filter.lv2/", // plugin UI bundle "/usr/lib/lv2/filter.lv2/filter.so", // plugin UI binary &featureArray[0]); // supported features by host // get widget of the UI instance SuilWidget widget = suil_instance_get_widget(instance); // add widget to container, casting "SuilWidget" to "GtkWidget*" as the target UI type is ui#GtkUI gtk_container_add (GTK_CONTAINER ( hbox->gobj() ), (GtkWidget*) widget); The error I get (at runtime) is the following: error: get_wrap_module: Unable to wrap UI type < http://lv2plug.in/ns/extensions/ui#external> as type < http://lv2plug.in/ns/extensions/ui#GtkUI> error: suil_instance_new: Failed to instantiate UI < http://nedko.aranaudov.org/soft/filter/2/gui> in /usr/lib/lv2/filter.lv2/filter.so Would anybody shed some light onto what I'm doing wrong? Cheers, -Harry

14 years, 8 months

Re: [LAD] Synth/Sampler why the distinction?

by James Morris

Sorry, meant to CC the list, but did BCC by mistake. On 10 June 2011 08:15, Veronica Merryfield <veronica.merryfield(a)tesco.net> wrote: > > On 2011-06-09, at 3:37 PM, James Morris wrote: > >> But are the two really so different? They both do exactly the same >> thing except one does it with synthesised waveforms and the other does >> it with sampled waveforms. From thinking about the fact that most soft >> synths use wave-tables, it can't be that difficult to put a sample in >> there? Aside from synthesised waveform and sampled waveform, I think >> (but don't quote me on this :-) that it is perhaps only certain >> conventions which distinguish the two. > > A sampler uses a range of samples over the note range that provide an entire note duration of waveforms. The sampler may have functions to insert looping points and may have timbre modification mechanisms, but it boils down to reproducing a sound. > > A synthesiser may have a waveform held as a sample, but it is only enough to reproduce one cycle of that sound. The timbre of that synthesised sound has to come from timbre control and modification mechanisms if one wants something more sophisticated than an on/off of a waveform. Granted, these waveforms may be quite complex but that are not the same as a full note sample. > > There are synths out there that do hybrid the two methods to some success. Yes, a hybrid is what I'm thinking about I suppose. And probably what I really mean is granular synthesis - which is just sampling after all, just with a different time scale. Oh well... James.

14 years, 8 months

[LAD] [LAA] [ANN] guitarix release guitarix2-0.15.0

by hermann

gx_head is a simple guitar mono tube amplifier simulation based on the work we have done in the guitarix project. WAIT, NO, We decide it's time to sync our project name and our project we work on. So we replace guitarix /gx_head by guitarix2, This release is a full replacement for guitarix and/or gx_head in any sense. You cant have install the old guitarix and/or gx_head parallel to this release. Please uninstall all older versions before use this one. please refer to our project page for more information: http://guitarix.sourceforge.net/ new features in short: * reworked GUI controllers * reworked rc-style files * replace clean tube modes by a clean <-> distortion controller * new cab models and controls (level, bass, treble) * new tonestack models * make tonestacks and cabs a move-able module * cleaner effect rack construction * customizable effect rack order (horizontal, vertical) * a bunch of what I have forget to mention here have fun _________________________________________________________________________ guitarix is licensed under the GPL. screen-shots and sound examples: http://guitarix.sourceforge.net/ direct download: http://sourceforge.net/projects/guitarix/files/guitarix/guitarix2-0.15.0.ta… download site: http://sourceforge.net/projects/guitarix/ please report bugs and suggestions in our forum: http://sourceforge.net/apps/phpbb/guitarix/ ________________________________________________________________________ For extra Impulse Responses, gx_head uses the zita-convolver library, and, for resampling we use zita-resampler, both written by Fons Adriaensen. http://kokkinizita.linuxaudio.org/linuxaudio/index.html We use the marvellous faust compiler to build the amp and effects and will say thanks to : Julius Smith http://ccrma.stanford.edu/realsimple/faust/ : Albert Graef http://q-lang.sourceforge.net/examples.html#Faust : Yann Orlary http://faust.grame.fr/ ________________________________________________________________________ For faust users : All used Faust dsp files are included in /gx_head/src/faust, the resulting .cc files are in /gx_head/src/faust-generated The tools we use to convert (post-processing and plot) the resulting faust cpp files to the needed include format, stay in the /gx_head/tools directory. ________________________________________________________________________ regards guitarix development team

14 years, 8 months

[LAD] LAC 2011

by Robin Gareus

Hi *, The LAC 2011 site just ascended. All conference material (proceedings, video recordings, slides, etc) has been made publicly available. http://lac.linuxaudio.org/2011/ We'd like to thank all speakers and everyone who volunteered to make this an enjoyable event; in particular Frank Neumann, John Lato, Victor Lazzarini and special thanks to Jörn Nettingsmeier. enjoy, robin for the LAC-2011 team.

14 years, 8 months

[LAD] Any package builders here?

by Ralf Mardorf

Hi :) could you please add a dependency to audio/MIDI app packages for your distros, that will set up real-time usage? The following issue is wide spread: -------- Forwarded Message -------- > Be sure you are able to run audio apps with the right privileges, eg. > add your user to the "audio" group in /etc/groups and check > out /etc/security/limits.conf for these lines > @audio - rtprio 100 > @audio - nice -10 Thank you :) I'm experienced in setting up audio/MIDI DAWs on Linux. Btw. setting up nice is nonsense, since it's for rt ;), but memlock is needed. http://www.jackaudio.org/linux_rt_config Cheers! Ralf I can't see any reason not do add such a dependency. Or is there a good reason not to do? Thanks, Ralf

14 years, 8 months

[LAD] Petri-Foo - a new fork of Specimen

by James Morris

Hi, I've forked Specimen primarily to provide frequency Modulation of the LFOs and to make all the LFOs and ADSRs independent so that there is no longer a single dedicated ADSR and a single dedicated LFO for ie pitch modulation, but two 'inputs' for pitch modulation for which the choice of all ADSRs and all LFOs is available. Please read the README for more information: https://github.com/jwm-art-net/Petri-Foo#readme The current state of Petri-Foo is that the LFOs and ADSRs have been made independant and are, AFAICT, working as should. The GUI is not yet up to date, but changes have been made enough to get a basic idea of what's going on. Please do read the README before commenting. I've tried to do things properly! I'm only human and only a hobbyist coder. Cheers, James. -- _ : http://jwm-art.net/ -audio/image/text/code/

14 years, 8 months

[LAD] NASPRO 0.2.91 released

by Stefano D'Angelo

Hi all, I'm glad to announce the release of NASPRO 0.2.91. NASPRO (http://naspro.atheme.org/) is meant to be a cross-platform sound processing software architecture built around the LV2 plugin standard (http://lv2plug.in/). The goal of the project is to develop a series of tools to make it easy and convenient to use LV2 for sound processing on any (relevant) platform and for everybody: end users, host developers, plugin developers, distributors and scientists/researchers. This is mostly a bugfix release with a "not officialy supported" port to Win32/64 and bunch of LV2 data-only bundles containing handcrafted the equivalent of all LRDF data I could find. It includes: NASPRO core: the portable runtime library at the bottom of the architecture; NASPRO Bridge it: a little helper library to develop insert-your-API-here to LV2 bridges; NASPRO bridges: a collection of bridges to LV2 which, once installed, allow you to use plugins developed for other plugin standards in LV2 hosts. In particular, the NASPRO bridges collection includes two bridges: a LADSPA (http://www.ladspa.org/) 1.1 and a DSSI (http://dssi.sourceforge.net/) 1.0.0/1.1.0 bridge. All of the code is released under the LGPL 2.1 license. Due to a couple of issues with Lilv (http://drobilla.net/software/lilv/) 0.4.2 and zynjacku (http://home.gna.org/zynjacku/) 6, the installation of such bundles has to be explictly requested at ./configure time. Furthermore, patches to fix a tiny bug preventing Lilv 0.4.2 from properly working with dynamic manifests and to try to fix (i.e., perhaps more a hack than a fix) cross-referencing among bundles w.r.t. dynamic manifests in zynjacku 6 are avialable in the Downloads page. More information is available on the project's website. Enjoy!

14 years, 8 months

[LAD] mp3-player needs sendmail - really?

by Jens M Andreasen

Anybody got any idea why the realplayer insist on installing sendmail as well? Is it a rootkit, intending to turn me into a spam-node? /j

14 years, 8 months

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Linux-audio-dev