Linux-audio-dev May 2013

linux-audio-dev@lists.linuxaudio.org

45 participants
27 discussions

by Frank Kober

Hi, QMidiArp 0.5.2 has just seen the light of the day. It brings mainly two improvements. One is a comeback, that of tempo changes on the fly, and that now includes also tempo changes of a potential Jack Transport master. Also the Jack Transport starting position is finally taken into account, so that QMidiArp should be in sync also when starting the transport master not at zero. The second one is Non Session Manager support, mainly thanks to the work done by Roy Vegard Ovesen! Note that for compiling in NSM support you will now need liblo as dependency. Enjoy, and enjoy LAC in Graz this year Frank ________________________________ QMidiArp is an advanced MIDI arpeggiator, programmable step sequencer and LFO. Everything is on http://qmidiarp.sourceforge.net qmidiarp-0.5.2 (2013-05-09) New Features o Tempo changes are again possible while running, both manually or by a Jack Transport Master o Jack Transport position is now taken into account when starting, QMidiArp used to start always at zero o Muting and sequencer parameter changes can be deferred to pattern end using a new toolbutton o Modules in the Global Storage window have mute/defer buttons o Global Storage location switches can be set to affect only the pattern o Non Session Manager support with "switch" capability (thanks to Roy Vegard Ovesen) General Changes o NSM support requires liblo development headers (liblo-dev package)

9 years, 10 months

OpenAV Productions : Sorcer

by Harry van Haaren

Hey Everybody, I'm happy to announce OpenAV productions: http://openavproductions.com OpenAV productions is a label under which I intend to release my linux-audio software projects. The focus of the software is on the workflow of creating live-electronic music and video. The release system for OpenAV productions is one based on donations and time, details are available on http://openavproductions.com/support Sorcer is a wavetable synth, and is ready for release. Check out the interface and demo reel on http://openavproductions.com/sorcer Greetings from the LAC, -Harry

10 years, 2 months

itop

by elboulangero

Hello everyone, lately I had to fight big XRUN troubles, and thanks to this forum I finally solved that. This excellent thread saved me: http://linuxaudio.org/mailarchive/lau/2012/9/5/192706 On my long quest, I tried to see a little bit more what happened with the IRQs on my system. I searched for a kind of 'top' utility to monitor the interrupts, but the only apps I found were either deprecated, or missed some cool features. So, I ended up writing my own tool to monitor the file /proc/interrupts. It's available a this address: https://gitorious.org/elboulangero/itop As its name indicates, it behaves pretty much like top, but for interrupts. It's quite a simple thing, that I tried to enhance a bit with some cool features: + refresh period can be specified. + two display modes: display interrupts for every CPU, or only a sum of all CPU. + display every interrupt (sorted like /proc/interrupts), or only active interrupts (sorted by activity). + in case the number of interrupts changes during the execution of itop (due to a rmmod/modprobe), it's handled without any fuss. + command-line options are also available as hotkeys for convenience. + at last, the program display a summary on exit. The idea is that this summary could be copied/pasted in emails to help debugging. If anyone is interested, feel free to try and comment ! Cheers

10 years, 3 months

Support for Steinberg UR22 (Yamaha USB chipset 0499:1509)?

by cullinan＠rocketmail.com

Hi, there! I just got a Steinberg UR22 USB<->Audio / MIDI interface for my semi-prof. DJ work. I am working on Linux (only), but wanted to give this new product a chance. Well, it's basically a nice device but with an Yamaha chipset in it which seem unfortunately not supported from the latest (3.7.9) linux kernel(s). My questions are: - How likely is it to get this device fully supported on linux? - What needs to be done to get this device fully supported? I am an electrical engineer and did some linux device driver development in the past on some DMA stuff, but I am quite new to linux audio. But I am willing to help somewhere... I could try to reverse-engineer the USB stuff on Windows with the usbmon/usbsnoop/libusb things... But if it's too much work, to get it working, I could also just decide to send it back to Steinberg and thank them for not supporting Linux with their products. The USB information I could get is: $ aplay -l doesn't list that device $ lsusb ... Bus 002 Device 016: ID 0499:1509 Yamaha Corp. ... (See the more comprehensive $ lsusb -v below...) Related USB devices are: 0499:1501 Yamaha 0499:1507 Yamaha THR10 0499:1509 Yamaha Steinberg UR22 (what I am talking about) 0499:150c Yamaha THR10C Related search resuls are: Getting a Steinberg CI1 USB audio interface to work http://ubuntuforums.org/showthread.php?t=1696336 Yamaha THR10 amp / USB2.0 audio interface http://linux-audio.4202.n7.nabble.com/Yamaha-THR10-amp-USB2-0-audio-interfa… Thank you, Clemens (different one as in last link) -----8<----- $ lsusb -v -d 0499:1509 Bus 002 Device 014: ID 0499:1509 Yamaha Corp. Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 255 Vendor Specific Class bDeviceSubClass 0 bDeviceProtocol 255 bMaxPacketSize0 64 idVendor 0x0499 Yamaha Corp. idProduct 0x1509 bcdDevice 1.00 iManufacturer 1 Yamaha Corporation iProduct 2 Steinberg UR22 iSerial 0 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 442 bNumInterfaces 5 bConfigurationValue 1 iConfiguration 0 bmAttributes 0xc0 Self Powered MaxPower 500mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 0 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 1 bInterfaceProtocol 0 iInterface 0 ** UNRECOGNIZED: 0a 24 01 00 01 34 00 02 01 02 ** UNRECOGNIZED: 0c 24 02 01 01 01 00 02 03 00 00 00 ** UNRECOGNIZED: 09 24 03 02 01 03 00 01 00 ** UNRECOGNIZED: 0c 24 02 03 03 06 00 02 03 00 00 00 ** UNRECOGNIZED: 09 24 03 04 01 01 00 03 00 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 0 bNumEndpoints 0 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 2 bInterfaceProtocol 0 iInterface 0 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 1 bNumEndpoints 1 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 2 bInterfaceProtocol 0 iInterface 0 ** UNRECOGNIZED: 07 24 01 01 01 01 00 ** UNRECOGNIZED: 0e 24 02 01 02 03 18 02 44 ac 00 80 bb 00 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x07 EP 7 OUT bmAttributes 5 Transfer Type Isochronous Synch Type Asynchronous Usage Type Data wMaxPacketSize 0x002a 1x 42 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 2 bNumEndpoints 1 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 2 bInterfaceProtocol 0 iInterface 0 ** UNRECOGNIZED: 07 24 01 01 01 01 00 ** UNRECOGNIZED: 0e 24 02 01 02 03 18 02 88 58 01 00 77 01 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x07 EP 7 OUT bmAttributes 5 Transfer Type Isochronous Synch Type Asynchronous Usage Type Data wMaxPacketSize 0x004e 1x 78 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 3 bNumEndpoints 1 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 2 bInterfaceProtocol 0 iInterface 0 ** UNRECOGNIZED: 07 24 01 01 01 01 00 ** UNRECOGNIZED: 0e 24 02 01 02 03 18 02 10 b1 02 00 ee 02 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x07 EP 7 OUT bmAttributes 5 Transfer Type Isochronous Synch Type Asynchronous Usage Type Data wMaxPacketSize 0x0096 1x 150 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 2 bAlternateSetting 0 bNumEndpoints 0 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 2 bInterfaceProtocol 0 iInterface 0 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 2 bAlternateSetting 1 bNumEndpoints 1 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 2 bInterfaceProtocol 0 iInterface 0 ** UNRECOGNIZED: 07 24 01 04 01 01 00 ** UNRECOGNIZED: 0e 24 02 01 02 03 18 02 44 ac 00 80 bb 00 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x86 EP 6 IN bmAttributes 5 Transfer Type Isochronous Synch Type Asynchronous Usage Type Data wMaxPacketSize 0x002a 1x 42 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 2 bAlternateSetting 2 bNumEndpoints 1 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 2 bInterfaceProtocol 0 iInterface 0 ** UNRECOGNIZED: 07 24 01 04 01 01 00 ** UNRECOGNIZED: 0e 24 02 01 02 03 18 02 88 58 01 00 77 01 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x86 EP 6 IN bmAttributes 5 Transfer Type Isochronous Synch Type Asynchronous Usage Type Data wMaxPacketSize 0x004e 1x 78 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 2 bAlternateSetting 3 bNumEndpoints 1 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 2 bInterfaceProtocol 0 iInterface 0 ** UNRECOGNIZED: 07 24 01 04 01 01 00 ** UNRECOGNIZED: 0e 24 02 01 02 03 18 02 10 b1 02 00 ee 02 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x86 EP 6 IN bmAttributes 5 Transfer Type Isochronous Synch Type Asynchronous Usage Type Data wMaxPacketSize 0x0096 1x 150 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 3 bAlternateSetting 0 bNumEndpoints 2 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 3 bInterfaceProtocol 255 iInterface 0 ** UNRECOGNIZED: 07 24 01 00 01 24 00 ** UNRECOGNIZED: 06 24 02 02 01 00 ** UNRECOGNIZED: 09 24 03 02 01 01 01 01 00 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x01 EP 1 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x82 EP 2 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 4 bAlternateSetting 0 bNumEndpoints 2 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 255 Vendor Specific Subclass bInterfaceProtocol 255 Vendor Specific Protocol iInterface 0 ** UNRECOGNIZED: 07 24 01 00 01 24 00 ** UNRECOGNIZED: 06 24 02 02 01 00 ** UNRECOGNIZED: 09 24 03 02 01 01 01 01 00 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x03 EP 3 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x84 EP 4 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Device Qualifier (for other device speed): bLength 10 bDescriptorType 6 bcdUSB 2.00 bDeviceClass 0 (Defined at Interface level) bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 64 bNumConfigurations 1 Device Status: 0x0000 (Bus Powered) -----8<-----

10 years, 3 months

[ANN] New Jack / LV2 Host with socket support

by Ricardo Crudo

Hi LAD! We, from MOD <http://portalmod.com/en> team, released now a new Jack / LV2 Host in github: the mod-host. mod-host is a command line application like jalv, but that accept multiple instances and can be controlled via socket or shell. LV2 features currently supported: * lv2core * atom * event * buf-size * midi * options * uri-map * urid * worker More information can be found on README file. repo: https://github.com/portalmod/mod-host We hope that mod-host can be useful for others projects! Best Regards, Ricardo Crudo.

11 years, 1 month

Xiph.org - Video:Digital Show and Tell - No difference between analog and digitally processed sound.

by Barney Holmes

Thought the list would find this valuable. http://wiki.xiph.org/Videos/Digital_Show_and_Tell I was under the impression that there was some fundamental difference between the sound of analog and digital audio. But Monty Montgomery of Xiph.org completely annihilates this misconception with some clever use of analog sound reference equipment fed through a digital process and then out to an analog oscilloscope, vs. feeding direct from analog to the oscilloscope. The results are identical. I think Xiph have done the open source music community quite a service here because it completely trumps, in my opinion, the perception that electronic music put through a digital process is somehow "inferior" to analog music. ~~~ Home site - http://djbarney.org

11 years, 2 months

wiki consolidation linuxmusicians.com & linuxaudio.org

by Robin Gareus

Hi all, Just a quick head's up: linuxaudio.org and linuxmusicians.com have joined forces. Today Arnout and me have started to consolidate the wiki: http://wiki.linuxmusicians.com has been merged into http://wiki.linuxaudio.org/ Many thanks to all who have contributed to and helped maintaining the content over the past years! Your efforts are very much appreciated. There are still a few open ToDo items to be sorted out. In case you would like to help, please see http://wiki.linuxaudio.org/wiki/migrationprogress Cheers! robin

11 years, 2 months

[ann] liblo 0.27 released

by Stephen Sinclair

We are pleased to present stable release 0.27 of LibLo, the lightweight, easy to use implementation of the Open Sound Control protocol. Open Sound Control (OSC) is a protocol for communication among computers, sound synthesizers, and other multimedia devices that is designed for use over modern network transports. This is the first release in quite some time, and includes several major features and improvements since the 0.26 release, particularly related to bundles, multicast, and TCP support. Features include: - Support for sending and receiving nested bundles, including ref-counted memory handling for bundled messages. - Support for multicast in oscdump and oscsend tools. - Callbacks for bundle handling. - Select desired network interface for multicast. - Fix blocking semantics of lo_server_wait() / lo_server_recv(). - Make inclusion of threading-related code optional. - Basic compilation script for Android. - Allow to optionally disable server dispatch queueing at runtime. (In this case messages are dispatched immediately even if they are timestamped for later.) - Support bidirectional use of TCP ports using lo_send_from(). - Add SLIP protocol support for packetization when sending and receiving with TCP. - Allow to enable the TCP_NODELAY flag on TCP sockets. - Support for specifying server parameters via URL string, and also support for URL strings in the oscsend and oscdump tools. - As a result of the above, support for TCP and Unix sockets in the oscsend and oscdump tools. Bug fixes include: - Fixed timestamp serialization. - Fixed blob padding and char-type padding. - Close sockets properly under Windows. - Fix multicast under Windows. - Fix TCP reception blocking behaviour, such that a message can span multiple calls to recv(). - Correct printing of blob bytes. - Only call getnameinfo() when requested. This release contains contributions by: - Camille Troillard - Hanspeter Portner - Jamie Bullock - Joseph Malloch - Pete Goodeve - rjvbertin - Mok Keith - David Robillard - John McFerran - Artem Baguinski - William Light Please download it at SourceForge: http://downloads.sourceforge.net/liblo/liblo-0.27.tar.gz Or read the online documentation: http://liblo.sourceforge.net The git repository can be found at the following mirrors: - git://liblo.git.sourceforge.net/gitroot/liblo/liblo - git://gitorious.org/liblo/mainline.git - https://github.com/radarsat1/liblo.git

11 years, 2 months

Re: [LAD] Xiph.org - Video:Digital Show and Tell

by Frank Smith

Hi All Found this to be very well explained and a really good effort. Takes real skill to be able to explain quite complicated science so well. Many thanks Cheers Bob

11 years, 2 months

Re: [LAD] NSM support: progress, wishlist

by geoff

conversations with the one known in this thread as rosea.grammostola What is that supposed to mean Paul? g -------- Original message -------- From: Paul Davis <paul(a)linuxaudiosystems.com> Date: 21/05/2013 3:30 AM (GMT+10:00) To: Dan <danmbox(a)gmail.com> Cc: LAD <linux-audio-dev(a)lists.linuxaudio.org> Subject: Re: [LAD] NSM support: progress, wishlist jack-session is NOT deprecated. conversations with the one known in this thread as rosea.grammostola indicated that not much more work is likely on jack-session at any time in the near future, but given that almost all development work that changes the JACK API has been absent for a couple of years, this is hardly a surprise. On Sun, May 19, 2013 at 4:54 AM, Dan <danmbox(a)gmail.com> wrote: I have no idea who controls the various web-sites that still promote things like LASH (e.g. on nongnu), but I do know that Jack devs use doxygen and should add deprecation warnings to the jack-session pages. On 5/18/13, rosea.grammostola <rosea.grammostola(a)gmail.com> wrote: > On 05/18/2013 01:37 PM, Thijs van severen wrote: >> i must confess : i'm also using jack session :-) > > But you're coming from far, Garageband wasn't it (o no that was a friend > of yours right)? ;) > > Anyway, floss development can be fast, very fast. Rui implemented 'nsm > optional-gui' functionality in qtractor and his v1 stuff already, oh my! :) > > Thanks! > \r > _______________________________________________ > Linux-audio-dev mailing list > Linux-audio-dev(a)lists.linuxaudio.org > http://lists.linuxaudio.org/listinfo/linux-audio-dev > _______________________________________________ Linux-audio-dev mailing list Linux-audio-dev(a)lists.linuxaudio.org http://lists.linuxaudio.org/listinfo/linux-audio-dev

11 years, 2 months

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Linux-audio-dev May 2013