Linux-audio-dev

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7534 discussions

[linux-audio-dev] [RFC] C++ wrapper for JACK API

by Jussi Laako

I believe there are many C++ implementations of JACK API, but I'll add my 50 cents to the game anyway. I created this for my own applications, and this is very new and untested piece of code. Anyway, I welcome any comments on this and hopefully this code could be useful to someone else too. A basic JACK application made using this library works OK anyway. Current implementation is available from: http://www.sonarnerd.net/linux/libjackmm-071104.tar.gz -- Jussi Laako <jussi.laako(a)pp.inet.fi>

21 years, 3 months

Fwd: [linux-audio-dev] QSynth/fluidsynth having problems with looped soundfonts

by Rui Nuno Capela

Hi, (Cross-posting to fluid-dev list, just in case someone is listening there too, and have some comment into play) I don't seem to notice this behavior, but strange enough, I don't have that many soundfonts to try. Maybe if you point us a specific soundfont file (url?), bank and program numbers of the patch where the issue is exposed... Probably not on time for your presentation, but I would like to confirm whether it's an internal fludisynth bug (qsynth is just a Qt frontend to libfluidsynth) or a side-effect from from your ecosystem. Distro and fluidsynth/qsynth versions would be welcome for the record. If you compiled from source, the configure command line optimization options are known (by just me?) to have a relevant impact to the fluidsynth build stability and behavior. Just check it out. Bye now. ---------------------------- Original Message ---------------------------- Subject: [linux-audio-dev] QSynth/fluidsynth having problems with looped soundfonts From: ico(a)fuse.net Date: Wed, November 3, 2004 4:12 -------------------------------------------------------------------------- Hi all, Just a quick question before my tomorrow's presentation. I am hoping to be able to present fluidsynth/Qsynth but one of the issues I encountered using two different versions of fluidsynth and a number of soundfonts is that the sound of soundfonts is fine until they begin to loop (i.e. long flute sound eventually starts to loop the sample) and then at every loop cycle there is a kind of a clicking noise as if the loop points are either badly designed (unlikely, since I tried 5 different soundfonts that were downloaded from different places), there is something weird with the tested versions of fluidsynth, or this is a bug? Any help is greatly appreciated! Best wishes, Ico

21 years, 3 months

[linux-audio-dev] [ANN] hexter DX7 modeling DSSI plugin

by Sean Bolton

Announcing the first public release of the hexter DSSI plugin. http://dssi.sourceforge.net/hexter.html hexter is a software synthesizer that models the sound generation of a Yamaha DX7 synthesizer. Now you can have the sparkling, richly evolving sounds of this classic FM synth on your Linux workstation! There are a few things still missing from hexter's emulation of the DX7 (and it doesn't attempt more general FM synthesis like Native Instrument's FM7), however, even at its current stage of development, it is quite useable and recreates the sound of the DX7 with greater accuracy than any previous open-source emulation (that the author is aware of....) It can easily load most of the thousands of DX7 patch bank files available on the Internet, and can accept patch editing commands via MIDI sys-ex messages from your favorite DX7 editor/librarian. hexter operates as a plugin for the DSSI Soft Synth Interface. DSSI is a plugin API for software instruments (soft synths) with user interfaces, permitting them to be hosted in-process by Linux audio applications. More information on DSSI can be found at: http://dssi.sourceforge.net/ The latest hexter version (currently 0.5.7) can be obtained at: http://sourceforge.net/project/showfiles.php? group_id=104230&package_id=134428 hexter requires a working DSSI host, liblo, GTK+ 1.2.x, plus the ALSA headers and LADSPA SDK. hexter is written by Sean Bolton, and copyright (c)2004 under the GNU General Public License, version 2 or later. hexter benefited greatly from previous open-source efforts, most notably Juan Linietsky's rx-saturno, and FluidSynth by Peter Hanappe, et al.

21 years, 3 months

[linux-audio-dev] [ANN] DSSI 0.9 released

by Chris Cannam

DSSI v0.9 released ================== I'm happy to announce version 0.9 of the DSSI plugin API. http://dssi.sourceforge.net/ DSSI is an audio plugin API designed for software instruments with custom user interfaces. DSSI is based on the LADSPA effects plugin API, the ALSA sequencer event types, and OSC (Open Sound Control) communications. It's intended to be easily understood, GUI-toolkit-agnostic, and slightly biased towards familiarity with MIDI. The DSSI distribution package contains a JACK/ALSA-sequencer reference host and some plugins as well as the specification and header. DSSI 0.9 was constructed by Steve Harris, Chris Cannam, and Sean Bolton. New in 0.9 ---------- The main improvements in 0.9 are to the reference host implementation and sample plugins. The 0.9 API itself is binary compatible with the previous 0.4 release. A new convention for plugin-global (rather than instance-local) configuration data and a convention for setting a plugin's project working directory have been introduced, and 0.9 clarifies certain implementation points in the documentation. Available hosts and plugins --------------------------- Two hosts are currently known to include complete or nearly-complete DSSI support: the reference jack-dssi-host included in the DSSI 0.9 distribution, and versions 0.9.9 and later of the Rosegarden-4 sequencer. Currently available plugins include: * a FluidSynth soundfont plugin included in the DSSI distribution * Xsynth-DSSI, an analog-style (VCAs-VCF-VCO) plugin * dssi-vst, a wrapper plugin enabling the use of many Windows VST instruments and effects * hexter, a Yamaha DX7 modeling plugin * three smaller example plugins (two synths and a sampler) that are also part of the DSSI distribution.

21 years, 3 months

[linux-audio-dev] QSynth/fluidsynth having problems with looped soundfonts

by ico＠fuse.net

Hi all, Just a quick question before my tomorrow's presentation. I am hoping to be able to present fluidsynth/Qsynth but one of the issues I encountered using two different versions of fluidsynth and a number of soundfonts is that the sound of soundfonts is fine until they begin to loop (i.e. long flute sound eventually starts to loop the sample) and then at every loop cycle there is a kind of a clicking noise as if the loop points are either badly designed (unlikely, since I tried 5 different soundfonts that were downloaded from different places), there is something weird with the tested versions of fluidsynth, or this is a bug? Any help is greatly appreciated! Best wishes, Ico

21 years, 3 months

[linux-audio-dev] calling open source artists/musicians (UK London area)

by Dave Griffiths

Hi all, A couple of us are thinking of putting together an open source focussed music and visual performance night in London (UK), with the aim of making it a semi regular event with a bit of a workshop feel to it - so people can share ideas and have some fun. We're just wondering what the interest for such an event would be, whether people would be interested in participating, or indeed if there is already something going on we've missed. Also if people are already doing similar nights in other places, if you have any tips. You can contact us directly at: leechun(a)leechun.freeserve.co.uk dave(a)pawfal.org or reply to the list... cheers, dave

21 years, 3 months

[linux-audio-dev] [ANN] busted2 tonight in berlin, auguststrasse

by martin rumori

hi *, last minute announcement: busted2, sound installation with 7 us-police livestreams using LD_PRELOAD, realplay, jack, hdsp, and, last but not least, linux gallery "mount warning" auguststrasse 10 berlin-mitte 8 p.m. CET us election party till tomorrow... running right now. come along! bests, martin

21 years, 3 months

[linux-audio-dev] Full version of the ICMC2004 paper now available for download

by Ivica Ico Bukvic

Hi all, It is my pleasure to announce immediate availability of the expanded version of the ICMC 2004's paper "Linux as a Mature Digital Audio Workstation in Academic Electroacoustic Studios – Is Linux Ready for Prime Time?" It can be obtained directly from the following link: http://meowing.ccm.uc.edu/~ico/Papers/ICMC2004-full.pdf I would also like to use this opportunity to thank all who helped make this paper better as well as all of you who have made very insightful comments and/or suggestions regarding the upcoming presentation on music standards. I've written down your thoughts and will incorporate them in my speech as soon as my other presentations are over with. For those interested, the paper on Linux will be presented tomorrow at noon. Best wishes, Ivica Ico Bukvic, composer & multimedia sculptor http://meowing.ccm.uc.edu/~ico/ --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.784 / Virus Database: 530 - Release Date: 10/27/2004

21 years, 3 months

[linux-audio-dev] Ardour 0.9beta20 released

by Paul Davis

This is intended to be the last beta release before Ardour 0.9 is released. No new features will be added before we release 0.9. FYI, 0.9 is intended to differ from 1.0 only with respect to bug fixes, install and first-time user experience. We do still have a few significant crashing and other major bug fixes to be resolved before 0.9 can be released, but optimism is in the air. http://ardour.org/releases/ardour-0.9beta20.tar.bz2 NEW FEATURES ------------- * Added support for midi parameter feedback. When enabled, controls that are bound to incoming midi events will send out that event when modified. This lets you control generic midi control surface with motor faders and/or led encoders (like the incredibly affordable Behringer BCF2000, which was used for testing), to match the internal state. Note the extra/changed options in the option editor's midi tab. Reminder: to bind a fader or bar-control to midi, do a Control-Middle-Click on it, then send some midi control. * automation playback will send MIDI parameter feedback, thus making external motorized faders etc. move with automation. Note: this feature will probably be reimplemented in the future because of interlocking problems with the realtime audio thread. * Added generic midi bindability for mute, solo, and rec-enable controls. to do it, you can do Control-RIGHT-click on the mute and solo buttons (the normal binding click is taken on these buttons for other functions). For the Record-enable button, it is the normal ctrl-middle-click. You can also pick it from the context menu of the mute button. A menu will be added to other buttons later. * add -V/--novst flag to avoid using VST even if it was compiled in * multiple selected regions can be dragged across tracks (nick mainsbridge) * normalization can be undone (patch from jkyro) * export dialog redesigned - master outs appear in their own selector, preselected - button to control visibility of specific other tracks * new playlist selector (uses a tree structure in a scrolled window, instead of menus) * add "nudge by capture offset" operation for regions * remove zoom changes from the undo/redo history * sessions still load when audio files are missing or corrupt * Ardour is believed to build on OS X (CVS and/or this release) FIXES ----- * templates now get installed/uninstalled/rolled-into-tarball/etc. Let me know if some corner of "make" doesn't work with the templates. * Removed libglib dependency from libardour. Instead of guint32, we use stdint.h's uint32_t, etc. * fixed some midi prompter dialog issues * fixed some midi binding state saving issues * change entire buffer management scheme to be (more) RT-safe * a major CVS commit that includes the first pass of changes to fix some serious errors in the way ardour handles threads when exiting. it also includes a significant fix to make export work when sync'ed with JACK * new functions to do "internal seeks" within the existing playback buffer of a DiskStream, avoiding a new disk read for small adjustments of playhead position * lots of work on MTC slaving * changed prototype of pthread_exit_pbd() * don't send a message via error/info/warning/fatal if thread is not registered with GUI * remove "eox" signal from MIDI parser * cleanup a few details of MIDI parsing - importantly, all sysex messages get eox on the end when passed to specific functions * add "timecode-source-is-synced" option to ardour.rc(.in) * remove Session::request_roll() * fix bug with MMC rec-enable handling (only odd-numbered tracks could be enabled) * make region export progress bar move in the right direction * more MTC slaving fixes and improvements (not done yet) * remove wrong-thread-calling of Session::clear_event_type(), which should help a number of loop-related crashes * remove erroneous use of "abort" in function call * Automake-1.7 or higher is required for libmidi++ now * add "nudge by capture offset" operation for regions * enlarge playhead/edit cursor arrows a bit * avoid duplicate keyboard target registration * pay attention to "virtual" window enter/leave events, but continue to ignore "inferior" ones (may help with keyboard focus issues) * cancelling tempo/meter create dialog doesn't insert a default tempo/meter marker * tempo/meter create dialogs have minimal WM decor, and use standard ArdourDialog API * 2d panner fixed in many ways (still not to my taste and not really correct) * context-click on 2d panner shows context menu (Bypass is the only entry so far) * bypass added to stereo panner context menu * general panner state load/restore fixes * master outs added to connections menu * added optimizations for peak metering (use of fabsf, flag constants as floats, avoid implicit double/float casting) * Updated the Italian and Brazilian translations. * handle disk over- and under-run errors in the GUI, and be more comprehensible to regular users. * fix panning bypass for 2d panner * fix stereo panner "mute" menu item so that it doesn't toggle panner mute state every time it pops up * fix more subtle elements of panner state restoration * remove window crossing debug messages * add "OK" button and remove window decoration from "can't connect to JACK" dialog

21 years, 3 months

[linux-audio-dev] [ANN] realtime-lsm-0.8.3 beta test

by Rohan Drape

Nice work, thanks. In passing, using KERNEL_DIR := /lib/modules/$(shell uname -r)/build should behave properly for normal builds?

21 years, 3 months

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