Linux-audio-dev

linux-audio-dev@lists.linuxaudio.org

2 participants
7534 discussions

by Sean Bolton

Announcing a new release of the hexter DSSI plugin. http://sourceforge.net/project/showfiles.php? group_id=104230&package_id=134428 hexter is a software synthesizer that models the sound generation of a Yamaha DX7 synthesizer. It can easily load most DX7 patch bank files, accept patch editing commands via MIDI sys-ex messages, and recreate the sound of the DX7 with greater accuracy than any other open-source emulation (that the author is aware of...) hexter operates as a plugin for the Disposable Soft Synth Interface (DSSI). New features in version 0.6.0 include: * Implemented the LFO, amplitude modulation and pitch modulation (many thanks to Jamie Bullock)! * Added TX7-style performance parameters, allowing configuration from the GUI of pitch bend range, portamento time, and sensitivity and assignment of the modulation wheel, foot controller, pressure (both channel and key), and breath controller. * Added DX7 patchbank loading code from Martin Tarenskeen, allowing hexter to load a number of additional patch file formats. * Partially implemented portamento. For now, the curves and times are wrong, but the plumbing is there. More information about hexter and DSSI can be found at: http://dssi.sourceforge.net/hexter.html hexter is written by Sean Bolton, and copyright (c)2007 under the GNU General Public License, version 2 or later.

18 years, 11 months

[linux-audio-dev] jackmidi_alsaseq-0.4

by Dmitry Baikov

Just can't resist. ---------- Forwarded message ---------- From: Dmitry Baikov <dsbaikov(a)gmail.com> Date: Mar 2, 2007 3:59 AM Subject: jackmidi_alsaseq-0.4 To: Jack Dev List <jackit-devel(a)lists.sourceforge.net> After missing several deadlines, we are finally here. This is the latest and greatest release of jackmidi alsaseq bridge. It is getting ready for inclusion into jackd (I hope), and I'd like to test is as hard as possible. I hope you will help me here :) Everything it needs is an svn version of jackd. For timing it by default uses hrtimers (available on 2.6.19+), there 3 more variants for your pleasure: select, poll and alsa queues. To enable them, uncomment corresponding define in the beginning of alsa_seqmidi.c. Although, hrtimers (via clock_nanosleep) shows the best results. Alsa queues suffer from events reordering, unless used with jack_time.patch. This is NOT a problem of alsa-seq, but is nearly impossible to avoid. To sum up, the default setting (clock_nanosleep) gives the best results so far. Regards, Dmitry.

18 years, 11 months

[linux-audio-dev] Re: [linux-audio-user] Open letter to Steve Ballmer

by Lee Revell

On 3/2/07, Nick Copeland <nickycopeland(a)hotmail.com> wrote: > If Microsoft patent any capabilities that are present in the ALSA codestream > them ALSA itself is exempt from the patent. This is written into the patent > laws, they cover the possibliity that somebody had a product that was later > patented by some other, wiser party. If the company in potential infringment > can prove prior implementation then they are exempt. > Prior art doesn't exempt the first implementor, it invalidates the patent, at least in the US. Lee

18 years, 11 months

[linux-audio-dev] Open letter to Steve Ballmer

by Marc-Olivier Barre

Hi, Since Microsoft recent audio related patent "that looks a lot like ALSA", I thought this could be interesting : http://www.showusthecode.com/ In short it's an open letter to Steve Ballmer asking him to show the code and patents that Linux supposedly copied from Microsoft (haha, what a joke...) Happy reading, __________________ Marc-Olivier Barre, Markinoko.

18 years, 11 months

[linux-audio-dev] Can we use Gmail on the new site

by Frank Smith

HI All my mail gets stopped as I'm using Gmail. This is an issue with older sendmail filters I believe. Cheers Bob

18 years, 11 months

[linux-audio-dev] variable audio stream ?

by Dominique Michel

After the bug fixes release of Alsaplayer, the hard work has begun. A discussion comes on our todo list in regards with new input plugins. We have an experimental wavpack plugin that constantly check the frame size. Does anyone ever hear about streams with variable byte-per-sample and frequency parameters (for example, at start it was 16bit/2ch/44100 but in the middle it will be 24bit/5ch/48000)? (for wavpack or other formats as well) Ciao, Dominique

18 years, 11 months

[linux-audio-dev] audiogui

by Leonard Ritter

On Thu, 2007-02-22 at 06:42 -0600, Jan Depner wrote: > I can say that the QT package is much easier to use and has > better documentation and support. Not that GTK is terrible, it's just > not as polished or professional. the enemy of the good is the better. i, for one, used the past 3 days to write a python module named "audiogui", which provides widgets to mimick the look and feel of traditional audio hardware panels (i dare you to start an audio ui design war with me). it will be the base for providing an engine which renders panels from stylesheets, to be used with plugins of aldrin - but of course that whole thing could be connected to an OSC library and control any DSSI host. the basic idea was to imitate the design seen from native instruments plugins and propellerheads reason. of course i'm damn proud that the results look so well ;) here is a demo showing the three widgets DecoBox, Knob and LCD, with different settings applied. http://www.paniq.org/images/audiogui5.png in case you want to play with it, the module is based on PyGTK+ and Cairo, and can be checked out from the aldrin svn. http://svn.zeitherrschaft.org/aldrin/trunk you find the scripts in share/aldrin, they are named audiogui.py and lcdfont.py. run audiogui.py for above demonstration. -- Leonard Ritter -- Freelance Art & Logic -- http://www.leonard-ritter.com

18 years, 11 months

[linux-audio-dev] alsaseq reorders my events

by Dmitry Baikov

Hi! I nearly finished alsaseq driver for jackmidi, but have a problem. Alsaseq reorders events in fast sequences, so note-on/note-off pairs got mixed. The algorithm of sending is simple: snd_seq_ev_schedule_real(&alsa_event, output_que, 1, &timestamp); frame_time = jack_frame_time(self->jack); frame_offset = event.time - frame_time; offset = ((long long)frame_offset) * 1000000000 / rate; timestamp.tv_sec = (long) (offset / 1000000000); timestamp.tv_nsec = (long) (offset % 1000000000); snd_seq_event_output(self->seq, &alsa_event); Here are the traces of what is going on: jackmidi_alsaseq reads events from external midi interface and send them to another midi interface. Log shows what is being sent to alsaseq and when. Output format is: [event] at [event.time] ([frame_time] + [frame_offset]) (+[offset]ns) c0ff@ace ~/src/jack/alsamidi $ ./jackmidi_alsaseq port created: in (20:0) MIDI 1 port created: out (20:0) MIDI 1 port created: in (24:0) USB Trigger Finger MIDI 1 port created: out (24:0) USB Trigger Finger MIDI 1 port_event: ADD 130:0 port created: out (130:0) aseqdump 90 4e 7f at 86646526 (86622198 + 24328) (+506833333ns) 80 4e 40 at 86649830 (86622200 + 27630) (+575625000ns) 90 4e 7f at 86654006 (86622201 + 31805) (+662604166ns) 80 4e 40 at 86656795 (86638582 + 18213) (+379437500ns) 90 4e 7f at 86660562 (86638584 + 21978) (+457875000ns) 80 4e 40 at 86663502 (86638584 + 24918) (+519125000ns) 90 4e 7f at 86666819 (86638585 + 28234) (+588208333ns) 80 4e 40 at 86669453 (86638585 + 30868) (+643083333ns) 90 4e 7f at 86673078 (86654965 + 18113) (+377354166ns) 80 4e 40 at 86676430 (86654966 + 21464) (+447166666ns) 90 4e 6f at 86678638 (86654967 + 23671) (+493145833ns) 80 4e 40 at 86680654 (86654968 + 25686) (+535125000ns) We can see that all events go strictly in order (their frame_time is monotonically increasing). Frame offsets are so big, because it runs under jackd -d dummy -p 16384. At the same time, aseqdump is hooked to jackmidi_alsaseq output port: c0ff@ace ~ $ aseqdump Waiting for data at port 130:0. Press Ctrl+C to end. Source_ Event_________________ Ch _Data__ 0:1 Port subscribed 128:5 -> 130:0 0:1 Port subscribed 128:2 -> 130:0 128:2 Note on 0 78 127 128:2 Note off 0 78 64 128:2 Note off 0 78 64 128:2 Note on 0 78 127 128:2 Note on 0 78 127 128:2 Note on 0 78 127 128:2 Note off 0 78 64 128:2 Note on 0 78 127 128:2 Note off 0 78 64 128:2 Note off 0 78 64 128:2 Note on 0 78 111 128:2 Note off 0 78 64 We see, Note on/Note off events are mixed. Your suggestions, please. Regards, Dmitry. P.S. Not wanting to start a flame war, but it is exactly the case, why it's better for jackmidi driver to use as lower-level interface as possible - less problems, more control. P.P.S. alsa-devels, if you reply, please CC me, i'm not subscribed.

18 years, 11 months

[linux-audio-dev] Wiki for Linux Sound & MIDI Software

by Robin Gareus

With ongoing preparation to "Integrate End User and Developer Resources at linuxaudio.org" (workshop @ LAC2007) we are proud to announce a first version of Dave's linux-sound application index as public-wiki: http://apps.linuxaudio.org/ this is by far no cute end-user resource portal yet, but a first step in merging data and setting up a prototype back-end! We are looking for interested people to contribute at various levels and suggest to use the mailing list for general discussion while keeping dokuwiki and style related requests at http://apps.linuxaudio.org/wiki:open_discussion Further [major] back-end development on http://apps.linuxaudio.org/ will probably not happen until LAC2007, but we are interested to tweak the look and feel, fix bugs, and collect feedback. We're also looking for qualified LAU's and LAD's to verify and maintain the current content with editor privileges, responsibilities and deeds. next up: docs.linuxaudio.org: - static documentation (docbook, LateX, [x]html) - slides and presentations (PDF, ps, png jpg,..??) - music (collaborate with or outsource to freesound et al.) - include (external?) video presentations, movies, etc - source code (coding examples: wiki-page; svn-mirror/server ??) for each hosted documentation there will be an option for user annotation(s). eg. wiki-discussion page, blog-comments, email-notify[-mailing-list]? - some of it will be merged with apps.linuxaudio.org which will provide automatic indexing; details remain to be discussed. some of the intended supported formats imply moderation / maintained upload or installation of static documentation. - the ring of maintainers could evolve with key-signatures, and parts of the system may become completely open. - suggestions: http://apps-devel.linuxaudio.org/wiki:suggest_doc ico & robin

18 years, 11 months

[linux-audio-dev] [ANN] Lists moving to linuxaudio.org on the 1st of march.

by Marc-Olivier Barre

Dear list members, On the 1st of march at 0h00 GMT, the three LA* lists will be moved to linuxaudio.org. What will it change for you ? not much : ¤ The new address you send your posts to will be : linux-audio-announce(a)linuxaudio.org for LAA linux-audio-dev(a)linuxaudio.org for LAD linux-audio-user(a)linuxaudio.org for LAU ¤ All the user currently subscribed will be migrated automatically, you do NOT need to create a new account ¤ Your password will be reset in the process, so will your parameters. Sorry we cannot do better than this... To get a password reminder (the first one should be automatically generated), you will find the lists home page at http://lists.linuxaudio.org/ ¤ The former addresses will still be valid, but when you will post to them, you will receive a reminder asking you to post on the new list. To avoid having duplicates when merging archives, the posts on the former addresses _will not be received_ by the list members. ¤ We will have a bigger and faster server, a spamassasin setup and interfacing with mailman is also in progress so administration will be easier _and_ moderation will be less pain (thus faster to do). I hope everything will go smoothly. If any of you run into trouble I will be on #LAD(a)freenode.net during the migration and available at "mobarre at linuxaudio dot org" which will be the new list admin address to help you with anything you'd need. Cheers, __________________ Marc-Olivier Barre, Markinoko.

18 years, 11 months

Jump to page:

2026

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

2003

2002

Linux-audio-dev