JackAudio May 2015

jackaudio@lists.linuxaudio.org

16 participants
15 discussions

[Jack-Devel] jack2 crackle sound problem on bbb - jack_bufsize?

by Fredrik Olofsson

dear collected wisdom, i have a tough problem to solve with jackd messing up my input sound. it’s a reoccurring crackling on the input channel that sounds a bit like pulsewave ring modulation. i figured out it’s highly dependent on my blocksize settings. for example: with -p1024 the distortion starts every 7th minute and lasts for 2min50sec. with -p512 the distortion sounds slightly different (like with a higher ringmod freq) and starts every 3min15sec and lasts for ~1min. with -p256 it appears every 1min45sec and lasts for 40sec. etc. after much research i found this... http://thread.gmane.org/gmane.comp.audio.jackit/28114/focus=28115 and this… http://music.columbia.edu/pipermail/linux-audio-user/2005-August/025787.html that i believe describe the same issue. as suggested in those posts resetting the jack_bufsize makes the distortion go away. but only temporarily - it always comes back after exactly the same time! for now i can let my system reset the buffer after a known time interval, but that’s a really ugly hack and i’d be happy for suggestions on how to solve this. below are details of my system. i compile jack2 from master and it’s all running under debian wheezy on a beaglebone black. i use supercollider 3.7 and a terratec aureon dual usb soundcard. i’ve also tried with another usb soundcard (C-MEDIA) but then the crackle occurs on the output instead (and also after longer intervals). so same issue but sounds worse. thank you, _f BeagleBoard.org Debian Image 2015-03-01 Linux asdf 3.8.13-bone70 #1 SMP Fri Jan 23 02:15:42 UTC 2015 armv7l GNU/Linux gcc and g++ version 4.7.2 ~$ aplay -l **** List of PLAYBACK Hardware Devices **** card 1: Device [USB PnP Sound Device], device 0: USB Audio [USB Audio] Subdevices: 0/1 Subdevice #0: subdevice #0 ~$ lsusb Bus 001 Device 004: ID 0ccd:0077 TerraTec Electronic GmbH Aureon Dual USB ~/jack2$ ./waf configure --alsa Setting top to : /home/debian/jack2 Setting out to : /home/debian/jack2/build Checking for 'g++' (C++ compiler) : /usr/bin/g++ Checking for 'gcc' (C compiler) : /usr/bin/gcc Linux detected Checking for program 'doxygen' : not found Checking for program 'pkg-config' : /usr/bin/pkg-config Checking for 'alsa' >= 1.0.18 : yes Checking for 'libffado' >= 1.999.17 : not found Checking for 'libfreebob' >= 1.0.0 : not found Checking for 'gtkIOStream' >= 1.4.0 : not found Checking for 'eigen3' >= 3.1.2 : not found Checking for header windows.h : not found Checking for 'portaudio-2.0' >= 19 : not found Checking for header mmsystem.h : no Checking for 'celt' >= 0.11.0 : not found Checking for 'celt' >= 0.8.0 : not found Checking for 'celt' >= 0.7.0 : not found Checking for 'celt' >= 0.5.0 : not found Checking for header opus/opus_custom.h : not found Checking for 'opus' >= 0.9.0 : not found Checking for 'samplerate' >= 0 : yes Checking for 'sndfile' >= 0 : yes Checking for library readline : yes Checking for header readline/readline.h : yes ================== JACK 1.9.11 svn revision will checked and eventually updated during build Build with a maximum of 64 JACK clients Build with a maximum of 768 ports per application Install prefix : /usr/local Library directory : /usr/local/lib Drivers directory : /usr/local/lib/jack Build debuggable binaries : no C compiler flags : ['-Wall'] C++ compiler flags : ['-Wall'] Linker flags : [] Build with engine profiling : no Build with 32/64 bits mixed mode : no Build standard JACK (jackd) : yes Build D-Bus JACK (jackdbus) : no Autostart method : classic Build doxygen documentation : no Enable ALSA driver : yes Enable FireWire driver (FFADO) : no Enable FreeBob driver : no Enable IIO driver : no Enable Portaudio driver : no Enable WinMME driver : no Build with CELT : no Build Opus netjack2 : no Build with libsamplerate : yes Build with libsndfile : yes Build with readline : yes ~$ tail /etc/security/limits.conf @audio - memlock 256000 @audio - rtprio 75 ~$ sudo jackd -P75 -dalsa -dhw:1,0 -p256 -n3 -r44100 -s & jackdmp 1.9.11 JACK server starting in realtime mode with priority 75 self-connect-mode is "Don't restrict self connect requests" creating alsa driver ... hw:1,0|hw:1,0|256|3|44100|0|0|nomon|swmeter|soft-mode|32bit configuring for 44100Hz, period = 256 frames (5.8 ms), buffer = 3 periods ALSA: final selected sample format for capture: 16bit little-endian ALSA: use 3 periods for capture ALSA: final selected sample format for playback: 16bit little-endian ALSA: use 3 periods for playback

9 years, 7 months

[Jack-Devel] Haiku JACK

by Dan MacDonald

~/src/jack-audio-connection-kit-0.124.1> make make all-recursive make[1]: Entering directory `/boot/home/src/jack-audio-connection-kit-0.124.1' Making all in libjack make[2]: Entering directory `/boot/home/src/jack-audio-connection-kit-0.124.1/libjack' /bin/sh ../libtool --tag=CC --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../config -I.. -I.. -I../include -D_REENTRANT -D_POSIX_PTHREAD_SEMANTICS -Wall -g -DJACK_LOCATION=\"/usr/local/bin\" -I../config -I.. -I.. -I../include -D_REENTRANT -D_POSIX_PTHREAD_SEMANTICS -Wall -g -MT libjack_la-client.lo -MD -MP -MF .deps/libjack_la-client.Tpo -c -o libjack_la-client.lo `test -f 'client.c' || echo './'`client.c libtool: compile: gcc -DHAVE_CONFIG_H -I. -I.. -I../config -I.. -I.. -I../include -D_REENTRANT -D_POSIX_PTHREAD_SEMANTICS -Wall -g -DJACK_LOCATION=\"/usr/local/bin\" -I../config -I.. -I.. -I../include -D_REENTRANT -D_POSIX_PTHREAD_SEMANTICS -Wall -g -MT libjack_la-client.lo -MD -MP -MF .deps/libjack_la-client.Tpo -c client.c -o libjack_la-client.o In file included from /boot/system/develop/headers/bsd/signal.h:9:0, from /boot/system/develop/headers/posix/sys/wait.h:10, from /boot/system/develop/headers/bsd/sys/wait.h:9, from /boot/system/develop/headers/posix/stdlib.h:14, from /boot/system/develop/headers/bsd/stdlib.h:9, from ../jack/jslist.h:27, from client.c:41: /boot/system/develop/headers/posix/signal.h:351:39: fatal error: arch/1/signal.h: No such file or directory #include __HAIKU_ARCH_HEADER(signal.h) ^ compilation terminated. make[2]: *** [libjack_la-client.lo] Error 1 make[2]: Leaving directory `/boot/home/src/jack-audio-connection-kit-0.124.1/libjack' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/boot/home/src/jack-audio-connection-kit-0.124.1' make: *** [all] Error 2 ~/src/jack-audio-connection-kit-0.124.1> locate signal.h /boot/home/src/haiku/headers/compatibility/bsd/signal.h /boot/home/src/haiku/headers/posix/arch/arm/signal.h /boot/home/src/haiku/headers/posix/arch/m68k/signal.h /boot/home/src/haiku/headers/posix/arch/mipsel/signal.h /boot/home/src/haiku/headers/posix/arch/ppc/signal.h /boot/home/src/haiku/headers/posix/arch/x86_64/signal.h /boot/home/src/haiku/headers/posix/arch/x86/signal.h /boot/home/src/haiku/headers/posix/signal.h /boot/home/src/haiku/headers/private/kernel/ksignal.h /boot/home/src/haiku/src/add-ons/kernel/network/protocols/l2cap/l2cap_signal.h /boot/system/data/gtk-doc/html/gobject/chapter-signal.html /boot/system/data/gtk-doc/html/gobject/signal.html /boot/system/develop/headers/bsd/signal.h /boot/system/develop/headers/posix/arch/arm/signal.h /boot/system/develop/headers/posix/arch/m68k/signal.h /boot/system/develop/headers/posix/arch/mipsel/signal.h /boot/system/develop/headers/posix/arch/ppc/signal.h /boot/system/develop/headers/posix/arch/x86_64/signal.h /boot/system/develop/headers/posix/arch/x86/signal.h /boot/system/develop/headers/posix/signal.h /boot/system/develop/headers/private/kernel/ksignal.h /boot/system/develop/headers/x86/glib-2.0/gobject/gsignal.h /boot/system/develop/headers/x86/Qt/q3signal.h /boot/system/develop/headers/x86/Qt3Support/q3signal.h Thanks JACK devs!

9 years, 7 months

[Jack-Devel] Solving a problem with JACK

by Phil Rhodes

Hi there, Not sure if this is really a JACK question, but I'll ask it to find out. I have a problem with an older piece of audio hardware (an M-Audio Projectmix) and a Windows 8 PC. The Windows 7 drivers partially work - ASIO works OK, but I can't get the normal Windows audio output to address the Projectmix properly. Applications will attempt playback, but nothing appears on the M-Audio software metering and no sound is heard. There aren't likely to be any further driver updates for this hardware. One solution that occurs is to use a piece of software to create a virtual audio device that Windows could address successfully, and pipe the results to the ASIO driver. Is that something JACK could do? Thanks, Phil

9 years, 7 months

[Jack-Devel] [jackaudio/jack1] 4492ce: [alsa_midi] fix hotplug device (de)enumeration

by Paul Davis

Branch: refs/heads/master Home: https://github.com/jackaudio/jack1 Commit: 4492cea02fb46305632d19796460b91fd319ec96 https://github.com/jackaudio/jack1/commit/4492cea02fb46305632d19796460b91fd… Author: Hanspeter Portner <dev(a)open-music-kontrollers.ch> Date: 2015-05-04 (Mon, 04 May 2015) Changed paths: M drivers/alsa_midi/a2j.h M drivers/alsa_midi/alsa_midi.c M drivers/alsa_midi/port_thread.c M drivers/alsa_midi/port_thread.h Log Message: ----------- [alsa_midi] fix hotplug device (de)enumeration Issues: - With a running JACK with enabled alsa_midi driver (-X alsa_midi), plugging in a new MIDI device has no effect, e.g. no corresponding JACK ports are spawned - With a running JACK with enabled alsa_midi driver (-X alsa_midi), deplugging a MIDI device has no effect, e.g. the corresponding JACK ports stay around Result: - JACK only creates JACK ports of ALSA MIDI clients/ports found at startup - JACK has to be restarted for any ALSA MIDI device (de)enumeration to take place Problem: - There are some functions defined which actually should accomplish this in the alsa_midi driver code (e.g. 'a2j_update_ports' and 'a2j_free_ports'), but they are not called from any other function ;-) Solution: - Discriminate properly between ALSA PORT_START and PORT_CHANGE events - 'a2j_new_ports' function has been added which recycles some code from 'alsa_input_thread' - Actually call the already existing hot(de)plugging infrastructure - 'a2j_update_ports' and 'a2j_new_ports' get called from the 'alsa_input_thread' - 'a2j_free_ports' gets called from 'alsa_output_thread' - 'alsa_out_thread' is woken up by 'a2j_jack_process_internal' - Cleanup code that is not used: - 'port_add' ringbuffer has no function, as 'new_ports' ringbuffer seems to be implemented to accomplish the same Signed-off-by: Hanspeter Portner <dev(a)open-music-kontrollers.ch> Commit: 6685cc737eec2937f0fb9d3088be2efee95a910e https://github.com/jackaudio/jack1/commit/6685cc737eec2937f0fb9d3088be2efee… Author: Paul Davis <paul(a)linuxaudiosystems.com> Date: 2015-05-04 (Mon, 04 May 2015) Changed paths: M drivers/alsa_midi/a2j.h M drivers/alsa_midi/alsa_midi.c M drivers/alsa_midi/port_thread.c M drivers/alsa_midi/port_thread.h Log Message: ----------- Merge branch 'ventosus-fix_alsa_midi_hotplug' Compare: https://github.com/jackaudio/jack1/compare/fb78f60db1db...6685cc737eec

9 years, 7 months

[Jack-Devel] [jackaudio/jack1] 7813a5: [alsa_midi] fix stop/start threads upon freewheeli...

by Paul Davis

Branch: refs/heads/master Home: https://github.com/jackaudio/jack1 Commit: 7813a526635101c9ae91e676125f7e115f7474bf https://github.com/jackaudio/jack1/commit/7813a526635101c9ae91e676125f7e115… Author: rncbc <rncbc(a)gamma.rncbc.lan> Date: 2015-05-01 (Fri, 01 May 2015) Changed paths: M drivers/alsa_midi/alsa_midi.c Log Message: ----------- [alsa_midi] fix stop/start threads upon freewheeling. Commit: fb78f60db1db017de7f2ba227f7e276d22ff760d https://github.com/jackaudio/jack1/commit/fb78f60db1db017de7f2ba227f7e276d2… Author: Paul Davis <paul(a)linuxaudiosystems.com> Date: 2015-05-01 (Fri, 01 May 2015) Changed paths: M drivers/alsa_midi/alsa_midi.c Log Message: ----------- Merge branch 'rncbc-fix_alsa_midi_freewheeling' Compare: https://github.com/jackaudio/jack1/compare/3befc4ff610d...fb78f60db1db

9 years, 7 months

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JackAudio May 2015