Linux-audio-dev

linux-audio-dev@lists.linuxaudio.org

3 participants
7536 discussions

[LAD] Need to look at and tune an acoustic instrument

by Gene Heskett

Greetings; I'm told that matlab can do this, but this is a one time deal on a home made instrument. I've not that sort of money to spend. Do we have anything for linux that can take a microphone input to an audio card, do an FFT on what it picks up that is accurate to small parts of a hertz at frequencies in the 1st two octaves of a keyboard? Thanks all. -- Cheers, Gene "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) The NRA is offering FREE Associate memberships to anyone who wants them. <https://www.nrahq.org/nrabonus/accept-membership.asp> * knghtbrd does the ET thing <knghtbrd> anybody got a speak-n-spell?

16 years, 8 months

Re: [LAD] supporting a dedicated DSP chip with ALSA

by Ziv Haziz

Ok I have taken the advise to use gstreamer when working with encoded streams (I read a bit and understood it fits my case better) I still left with offloading the PCM stream - this is a mandatory request from me to do it under ALSA. I have looked at LADSPA interface and saw there are for port types: #define LADSPA_IS_PORT_INPUT(x) ((x) & LADSPA_PORT_INPUT) #define LADSPA_IS_PORT_OUTPUT(x) ((x) & LADSPA_PORT_OUTPUT) #define LADSPA_IS_PORT_CONTROL(x) ((x) & LADSPA_PORT_CONTROL) #define LADSPA_IS_PORT_AUDIO(x) ((x) & LADSPA_PORT_AUDIO) If I declare my plugin as control only will I get all the information such as rate, format, etc... like a driver and will the frames will be passed to the driver directly? Ziv Haziz SW Team Leader Tel. +972-9-9529-776 Mobile +972-54-5225-398 ziv.haziz(a)dspg.com www.dspg.com <http://www.dspg.com> ______________________________________________________________________ DSP Group, Inc. automatically scans all emails and attachments using MessageLabs Email Security System. _____________________________________________________________________

16 years, 8 months

[LAD] Invada Studio Plugins (LADSPA & LV2) updates

by Fraser

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi Everyone, Just a quick note to advise there are new versions of the Invada Studio Plugins available. These releases are mainly a bugfix releases. LADSPA (version 0.3.1) * Added karmic package * Fixed a bug where compressor release couldn't go past 2s. * Eliminate DC offset from Tube. * Updated ER reflection process in line with LV2 version. More information & tarball download: http://www.invadarecords.com/Downloads.php?ID=00000263 Ubuntu packages: https://launchpad.net/~invada/+archive/ppa LV2 (version 1.0.1) * Fixed multiple errors in RDF files. * Fixed missing linker libs in makefile. * Improved host compatibility. * Disabled tool-tips while widgets are active.. More information & tarball download: http://www.invadarecords.com/Downloads.php?ID=00000264 Ubuntu packages: https://launchpad.net/~invada/+archive/ppa Regards, Fraser https://launchpad.net/invada-studio -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFKKimQNZroiEh4erwRAi9jAJ4gphnlQurfpVbyP9TmRSSxE1gbiwCeIBox i78wj63ZqA8NqQhwvHLzrbA= =a7zP -----END PGP SIGNATURE-----

16 years, 8 months

[LAD] [ANN] Qtractor 0.4.2 (flaunty demoness) is out!

by Rui Nuno Capela

Howdy! Greatest thanks goes to Mathias Krause aka gizzmo, who contributed with the fundamental code to the new MIDI controller mapping functionality that now widens the Qtractor horizon with regard from generic control surfaces. Being the Behringer BCF2000 [1] a notable example, control feedback is fully supported so that those fancy motorized faders, knobs and lights, actually reflect the whole mixing and editing session state. Some pre-made files are here provided for your conveniency: "bcx2000.qtc" [2] is to import into Qtractor (View/Controllers...) and a couple of presets goes into your BCF2000, "Qtractor_Mixer_1-8.syx" [3] and "Qtractor_Mixer_9-16.syx" [4], respectively for the first and second set of eight channel/track strips. Ah, the previous hardwired support for the JLCooper-like controls, provided by the Tascam US-224 and US-428 (via us428control), is now optional. You can have it back by just adding this file, "usx2y.qtc" [5], to the controllers map. That's it: Qtractor 0.4.2 (flaunty demoness) is out! Release highlights: * MIDI controller mapping (mixer) (NEW) * Audio/MIDI multi-clip merge (NEW) * Multi-clip selection export (NEW) * Improved snap precision on drag/moving clips (FIXED) * and some other asorted fixes (see change-log;) Description: Qtractor is an audio/MIDI multi-track sequencer application, written in C++ on top of Qt Software's Qt4 framework, having JACK and ALSA as its main infrastructures and Linux as native and exclusive platform. Specially suited to the lone-wolf composer, arranger and (re)creative music-maker personal home-studio, it still hopes to evolve as a fairly featured desktop audio/MIDI workstation or at least, a prototypical part of it ;) Website: http://qtractor.sourceforge.net Project page: http://sourceforge.net/projects/qtractor Downloads: - source tarball http://downloads.sourceforge.net/qtractor/qtractor-0.4.2.tar.gz - source package (openSUSE 11.1) http://downloads.sourceforge.net/qtractor/qtractor-0.4.2-1.rncbc.suse111.sr… - binary package (openSUSE 11.1) http://downloads.sourceforge.net/qtractor/qtractor-0.4.2-1.rncbc.suse111.i5… http://downloads.sourceforge.net/qtractor/qtractor-0.4.2-1.rncbc.suse111.x8… - binary package (Ubuntu 8.04 LTS) http://downloads.sourceforge.net/qtractor/qtractor_0.4.2-1.rncbc.ubuntu804.… - user manual (outdated) http://downloads.sourceforge.net/qtractor/qtractor-0.3.0-user-manual.pdf Weblog (upstream support): http://www.rncbc.org License: Qtractor is free, open-source software, distributed under the terms of the GNU General Public License (GPL) version 2 or later. Features: - Multi-track audio and MIDI sequencing and recording. - Developed on pure Qt4 C++ application framework (no Qt3 nor KDE dependencies). - Uses JACK for audio and ALSA sequencer for MIDI as multimedia infrastructures. - Traditional multi-track tape recorder control paradigm. - Audio file formats support: OGG (via libvorbis), MP3 (via libmad, playback only), WAV, FLAC, AIFF and many, many more (via linsndfile). - Standard MIDI files support (SMF format 0 and 1). - Non-destructive, non-linear editing. - Unlimited number of tracks per session/project. - Unlimited number of overlapping clips per track. - XML encoded session/project description file. - Point-and-click, multi-select, drag-and-drop interaction (drag, move, drop, cut, copy, paste, delete, split, merge) - Unlimited undo/redo. - Built-in mixer and monitor controls. - Built-in connection patchbay control and persistence (a-la QjackCtl). - LADSPA, DSSI and native VST plug-ins support. - Unlimited number of plug-ins per track or bus. - Plug-in presets, programs and chunk/configurations support. - Audio/MIDI clip fade-in/out (linear, quadratic, cubic). - Audio/MIDI clip gain/volume, normalize and export. - Audio clip time-stretching (WSOLA-like or via librubberband), pitch-shifting (also via librubberband) and seamless sample-rate conversion (via libsamplerate). - Audio/MIDI track export (mix-down, merge). - Audio/MIDI metronome bar/beat clicks. - Unlimited tempo/time-signature map. - MIDI clip editor (matrix/piano roll). - MIDI instrument definitions (a-la Cakewalk(tm)). - MIDI controller mapping (mixer). - JACK transport sync master. - MMC control surface enabled. - MIDI Song Position cueuing support. - Configurable keyboard shortcuts. Change-log: - The MIDI clip editor (piano-roll/matrix editor), the main track view as well, have been subject to usability fixing, the most notable avoids clearing current selection as much as possible when updating view contents (eg. changing zoom levels does not reset current selection anymore). - MIDI tracks channel bank/program and controller stuff are now only issued when the respective bus connections have changed, seldom on every playback start. - MIDI controller mapping infrastructure, with file based configuration management (see View/Controllers...), is now in place, following an original contribution from gizzmo aka Mathias Krause. - Plugin chain buffer reset on playback start/stop is not guarded by a momentary plugin de/activation anymore. - Clip export may now be applied to multiple clips, sharing common refactored code and same semantics as merging of current selected clips. - Improved, may be just fixed yet again, audio track export synchronization and reliability. - Clip merge is now featured both for audio and MIDI tracks (see Edit/Clip/Merge...). - Improved, or better said, fixed (again) the precision of multi-clip final positioning as result of drag/move and paste operations in main track view (as in bug #2741611). - MIDI track program number is now listed in 1-128 range, in an attempt to be consistent with corresponding MIDI track dialog drop-down list. - MIDI editor snap grid lines get slight different color then regular beat divisions. - Reset local tempo map cursor on newer MIDI file imports in a tentative to fix incidental but random crashes. URLs: [1] http://www.behringer.com/EN/Products/BCF2000.aspx [2] http://www.rncbc.org/datahub/bcx2000.qtc [3] http://www.rncbc.org/datahub/Qtractor_Mixer_1-8.syx [4] http://www.rncbc.org/datahub/Qtractor_Mixer_9-16.syx [5] http://www.rncbc.org/datahub/usx2y.qtc Cheers && Enjoy! -- rncbc aka Rui Nuno Capela rncbc(a)rncbc.org

16 years, 8 months

[LAD] supporting a dedicated DSP chip with ALSA

by Ziv Haziz

Hi All, i'm seeking an advise on the preferred way to support a dedicated DSP chip under ALSA. The system is an embedded system constructed on a dual core chip - one core is ARM vanlia and the other is a dedicated DSP core. The DSP core is capable of both playing both encoded streams (mp3, wma, various voice coders) and of course PCM streams. the codec (a2d, d2a) are connected to DSP. I looking for an elegant design to hide the DSP under the ALSA sysem and I have several ideas and would like to get your advise: 1. use LADSPA to make the DSP look as a plug-in for both control and data - what I don't know is if LADSPA forces me to return data to the ALSA for sending it to the kernel drivers 2. use the LADSPA to make the DSP control only and make another kernel driver for the audio data pass - is it possible? There can be a sync problem between the commands and the time the data will arrive? Will this support JACKD ? I'm open to other suggestions as well, Thanks in advance Ziv ______________________________________________________________________ DSP Group, Inc. automatically scans all emails and attachments using MessageLabs Email Security System. _____________________________________________________________________

16 years, 8 months

[LAD] jack for windows compared to linux

by Jens M Andreasen

What is the performance of the jackd like in its windows incarnation. Similar to Linux, better or perhaps significantly worse? Is it recommendable for general purpose usage? Since this would be for cross-platform applications, I am also interrested in any experience with the various graphics API's available. I have here a small audio application written for Win32 and compiled for Linux using winelib. This kind of works - at least for small projects like this one - but latency is way up. The same application ported to Qt with jack as a KDE application runs as smooth as one could ever request. Would this then be a simple matter of running ./configure and make on the output from KDevelop to get it to compile and run on Windows as well?

16 years, 8 months

[LAD] Could not deliver the message in the time limit specified.

by Ralf Mardorf

Hi :) sorry, I'm a fan of Qtractor, but it's still on a state were bugs urgently should be reported and wishes might have more effect than for similar, but established applications. I send 3 mails to rncbc(a)rncbc.org, but I got 'Could not deliver the message in the time limit specified.' I also wasn't able to surf http://www.rncbc.org/, the strange thing is, that I don't get an error message. I know that he's subscribed to Jack-dev and LAD. Is anybody able to connect to http://www.rncbc.org/? Some time ago there was a similar problem with his domain. I fear I can imagine what the problem is :(. Best, Ralf PS: Now I got "The server at www.rncbc.org is taking too long to respond."

16 years, 8 months

[LAD] [ANN] invada-studio-plugins-lv2-1.0.0

by Fraser

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi Everyone, I'm pleased to announce the initial 'LV2' release of the Invada Studio Plugins which feature plugin GUI's along with a new 'Stereo Phaser' plugin. The plugins have been tested on Arch 2009.02, Ubuntu Hardy and Ubuntu Jaunty (amd64) using Ardour 2.8 & Lars Luthman's Elven but if you come across something that doesn't look right (or is plain broken) please log it as a bug via the Invada Studio Launchpad page: https://launchpad.net/invada-studio More information & source download can be found here: http://www.invadarecords.com/Downloads.php?ID=00000264 For those running Ubuntu or derivatives, packages for Hardy, Jaunty, Intrepid & Karmic exist in the Invada PPA: https://launchpad.net/~invada/+archive/ppa Any Feedback / comments welcome. Enjoy! Fraser. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFKIO/1NZroiEh4erwRArYFAJwO6dYaLr2m3vHPji/DYQA5muvE/gCfYfYj S30U9TNMJPG5CJ4dJZ80c6A= =/Om7 -----END PGP SIGNATURE-----

16 years, 8 months

[LAD] Connie, an organ template for JACK

by linuxaudio

Hi, this is my first post to LAD. The discussion about a hammond simulation "Fons could you make us...", Beatrix and some research for writing a (german) wikipedia article (stub) about the Vox Continental inspired me to hack a quick organ program that simulates the internal signal flow of the "Connie" with JACK MIDI input and JACK audio output. Have fun: http://cryptomys.de/horo/Connie/Connie-0.1.tar.gz Ciao Martin Homuth-Rosemann

16 years, 8 months

[LAD] FST and JUCE-based plugins

by Julien Pommier

Hi, I have noticed that all JUCE-based vst plugins do not work in fst (at least their GUI and their internal message passing stuff). The reason is that the JUCE framework is initialising its internal machinery (a MessageManager etc) during the first call to the VST entrypoint, and if the later call to effEditOpen is performed from a different thread, then all sort of terrible things happens, and it ends with a deadlock. There is a discussion in the JUCE forum here: http://www.rawmaterialsoftware.com/juceforum/viewtopic.php?p=21530#21530 Please note that I'm not asking for a fix, but I just want to let the FST developers know about this problem ! Julien

16 years, 8 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