Linux-audio-dev

linux-audio-dev@lists.linuxaudio.org

4 participants
7502 discussions

by Chris Cannam

Version 2.6 of the Vamp plugin SDK is now available. http://www.vamp-plugins.org/ Vamp is a plugin API for audio analysis and feature extraction plugins written in C or C++. Its SDK features an easy-to-use set of C++ classes for plugin and host developers, a reference host implementation, example plugins, and documentation. It is supported across Linux, OS/X, and Windows. A documentation guide to writing plugins using the Vamp SDK can be found at http://www.vamp-plugins.org/guide.pdf. Version 2.6 is a bugfix and minor enhancement release. For more details, see the changelog at http://code.soundsoftware.ac.uk/projects/vamp-plugin-sdk/repository/entry/C… Chris

10 years

JACK sample rate pull up/down

by Reuben Martin

Does anybody know if there is any way to pull up/down with JACK? And if there is, can ALSA deal with it very gracefully? -Reuben

10 years

A couple of new plugins

by Hermann Meyer

been pushed to the guitarix git repository. Those are simulations of the following pedals: Fuzz Face JH1 Fuzz Face Fuller Mods Fuzz Face Roger Mayer Foxey Lady Colorsound Tonebender Sustainer+Muff (Big Muff Pi) Screamig Bird Hornet High Frequency Brightener LPB-1 Booster Hogs Foot They are generated from schematic files, with our Ampsim Toolkit. http://sourceforge.net/p/guitarix/blog/2015/03/j-hendrix-fuzz-face/ Schematic files (gschem) been included in the tools directory. regards hermann

10 years

Re: [LAD] AVB not so dead after all

by Leonardo Gabrielli

Hello Reuben, I have been talking to a Intel guy at the last AES convention and he told me they are supporting AVB (maybe he's reading this list as well). Another strong signal regarding AVB not dead. We were specifically talking about audio networking and multimedia. Best -- Leonardo Gabrielli, PhD Research Fellow A3Lab - DII - Università Politecnica delle Marche, Ancona, Italy skype: leonardo.gabrielli

10 years

JACK and vanilla 3.19.2 startup issue

by Harry van Haaren

Hi All, As root, starting JACK1 0.124.1 on an almost totally vanilla 3.19.2-1-ARCH kernel fails. Output of kernel with JACK1 issue is pasted below[1]. The same system works fine with the 3.18.9-rt5-1-rt kernel. Running "groups" tells me there is no group other than "root", so JACK seems to misinterpret that there is an audio group on the "broken" kernel. Any suggestions as to what's going on? Thanks, -Harry PS: I'm aware of the reasons to not run JACK as the root user or login as root for daily use. [1] Output while running "broken" kernel: [root@audio ~]# jackd -ddummy jackd 0.124.1 Copyright 2001-2009 Paul Davis, Stephane Letz, Jack O'Quinn, Torben Hohn and others. jackd 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 JACK is running in realtime mode, but you are not allowed to use realtime scheduling. Your system has an audio group, but you are not a member of it. Please add yourself to the audio group by executing (as root): usermod -a -G audio (null) After applying these changes, please re-login in order for them to take effect. You don't appear to have a sane system configuration. It is very likely that you encounter xruns. Please apply all the above mentioned changes and start jack again!

10 years

question re: waf cprogram

by Dave Phillips

Greetings, The error and repair attached below come from my attempts to build gmidimonitor on Fedora 19. As you can see, gcc is not what's required to complete the build, but waf's cprogram calls gcc, not g++. Alas, I can't find much information about the cprogram directive, and I'm always out of my depths when C++ is involved. Before anyone decides it's an "old code" issue, be advised that I have to perform the same operation on the latest git pulls of xjadeo. I'd like to know if there's a global solution, or at least a compile-time export I can use to resolve the problem. Fedora 19 x86_64, GCC 4.8.3 TIA! Best, dp [dlphilp@localhost gmidimonitor-3.6]$ ./waf Waf: Entering directory `/home/dlphilp/src/gmidimonitor-3.6/build' [10/10] cprogram: build/main.c.0.o build/about.c.0.o build/path.c.0.o build/gm.c.0.o build/log.c.0.o build/memory_atomic.c.0.o build/sysex.c.0.o build/jack.c.0.o build/alsa.c.0.o -> build/gmidimonitor /usr/lib/gcc/x86_64-redhat-linux/4.8.3/../../../../lib64/libjack.so: undefined reference to `std::__detail::_List_node_base::_M_unhook()@GLIBCXX_3.4.15' /usr/lib/gcc/x86_64-redhat-linux/4.8.3/../../../../lib64/libjack.so: undefined reference to `std::__detail::_List_node_base::_M_hook(std::__detail::_List_node_base*)@GLIBCXX_3.4.15' collect2: error: ld returned 1 exit status Waf: Leaving directory `/home/dlphilp/src/gmidimonitor-3.6/build' Build failed -> task failed (exit status 1): {task 40700176: cprogram main.c.0.o,about.c.0.o,path.c.0.o,gm.c.0.o,log.c.0.o,memory_atomic.c.0.o,sysex.c.0.o,jack.c.0.o,alsa.c.0.o -> gmidimonitor} ['gcc', 'main.c.0.o', 'about.c.0.o', 'path.c.0.o', 'gm.c.0.o', 'log.c.0.o', 'memory_atomic.c.0.o', 'sysex.c.0.o', 'jack.c.0.o', 'alsa.c.0.o', '-o', '/home/dlphilp/src/gmidimonitor-3.6/build/gmidimonitor', '-Wl,-Bstatic', '-Wl,-Bdynamic', '-lgtk-x11-2.0', '-lgdk-x11-2.0', '-latk-1.0', '-lgio-2.0', '-lpangoft2-1.0', '-lpangocairo-1.0', '-lgdk_pixbuf-2.0', '-lcairo', '-lpango-1.0', '-lfreetype', '-lfontconfig', '-lgobject-2.0', '-lglib-2.0', '-lgthread-2.0', '-lglib-2.0', '-lgmodule-2.0', '-lglib-2.0', '-ljack', '-lasound', '-llash', '-lpthread', '-luuid', '-ljack', '-lasound', '-pthread', '-pthread', '-pthread', '-pthread', '-Wl,--export-dynamic', '-pthread'] [dlphilp@localhost gmidimonitor-3.6]$ cd build/ [dlphilp@localhost build]$ g++ main.c.0.o about.c.0.o path.c.0.o gm.c.0.o log.c.0.o memory_atomic.c.0.o sysex.c.0.o jack.c.0.o alsa.c.0.o -o /home/dlphilp/src/gmidimonitor-3.6/build/gmidimonitor -Wl,-Bstatic -Wl,-Bdynamic -lgtk-x11-2.0 -lgdk-x11-2.0 -latk-1.0 -lgio-2.0 -lpangoft2-1.0 -lpangocairo-1.0 -lgdk_pixbuf-2.0 -lcairo -lpango-1.0 -lfreetype -lfontconfig -lgobject-2.0 -lglib-2.0 -lgthread-2.0 -lglib-2.0 -lgmodule-2.0 -lglib-2.0 -ljack -lasound -llash -lpthread -luuid -ljack -lasound -pthread -pthread -pthread -pthread -Wl,--export-dynamic -pthread [dlphilp@localhost build]$ ls about.c.0.o alsa.c.0.o c4che config.h config.log gm.c.0.o gmidimonitor jack.c.0.o log.c.0.o main.c.0.o memory_atomic.c.0.o path.c.0.o sysex.c.0.o

10 years, 1 month

io GNU/Linux 2015.03 released

by Manu Kebab

Hi all, New images are ready for testing ;) io GNU/Linux is a Live DVD/USB based on Debian Sid and focused on multimedia. Kernel 4.0.4 and 4.0.4-rt, Jack2+AlsaLoop as default sound server (can be easily changed to Jack2+ZitaBridge, Jack2+PulseAudio, PulseAudio or Alsa) e18 as desktop environment and a big collection of installed software... Full persistence for USB install (with encryption) and more stuff... For more infos: manual, packages list, screenshots, video etc... Visit: -> http://io.gnu.linux.free.fr -> https://sourceforge.net/projects/io-gnu-linux/ Installer has been rewritten, and a lot of work has been done to improve security of live persistent users. Feedbacks welcome, enjoy :) MK

10 years, 1 month

Pledgie GSequencer v0.4.3

by Joël Krähemann

Hi all Please visit and enjoy some updates like compile linux realtime kernel 4.0.4-rt1 or hardened Advanced Gtk+ Sequencer and for sure call for donation. http://gsequencer.org https://pledgie.com/campaigns/29411 cheers Joël

10 years, 1 month

Re: [LAD] [alsa-devel] Fw: Using loopback card to Connect GSM two way call to the real sound card UDA1345TS

by Clemens Ladisch

Srinivasan S wrote: > 2. Could you please let me know, I have downloaded jack-1.9.10.tar.bz2, how this needs to be installed in my rootfs IIRC Jack uses some non-standard build system. Try asking on the Jack mailing list how to cross-compile it. Please note that the ALSA Jack plugin is part of the alsa-plugins package. And as I already mentioned, it is unlikely that Jack will use less CPU than dshare. Regards, Clemens

10 years, 1 month

LV2 control port (parameter) value scaling and mapping?

by Christopher Arndt

Is there a way to have the value range of a control input port of a LV2 plugin be in one range (e.g. 0.0f..1.0f or 0-127) and have the LV2 host display the values scaled or mapped to a different range (e.g. 20-20,000 Hz or 2 - 2000 ms)? I know about lv2:scalePoints and the lv2:enumeration property to handle list of discrete values and the units:unit properties to set the value unit, but how do I map the actual values of a large continuous range? Is there a way to define a transfer function? Or does that need to happen inside the plug-in code? And what about more advanced parameter display, e.g. a wet/dry setting, which I want to display as going from 100:00 through 50:50 to 0:100, but the actual parameter value is just 0.0..1.0 (or -1.0..+1.0)? Background: I'm trying to improve the JX10.ttl from the mda.lv2 collection [1], so that the parameter display in the LV2 host generated plug-in UI is more useful and intuitive, i.e. instead of e.g. the slider for OSC Tuning being going from 0.0 .. 1.0, I want it to be displayed as -24 .. +24 cents. All control input ports of the plugin are defined as taking a value 0.0f..1.0f. [1] http://svn.drobilla.net/lad/trunk/plugins/mda.lv2/ Chris

10 years, 1 month

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Linux-audio-dev