Linux-audio-dev

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7513 discussions

[linux-audio-dev] [ANN] netjack-0.9 with alsa I/O (also can be used to bind jackd to 2 soundcards)

by torbenh＠gmx.de

ok... netjack-0.9 is here. this is basically netjack-0.9rc4 with the transport offset of one period fixed. additionally i have added 2 jack clients which open unrelated soundcards. these are fixed reimplementations of the old alsa_client. fully configurable, and better than the alsa_client. it does even work with usb soundcards. using a second soundcard for monitoring purposes is now possible. the only current limitation to this is 16bit. but this will be changed soon... -- torben Hohn http://galan.sourceforge.net -- The graphical Audio language

19 years, 6 months

[linux-audio-dev] [ANN] Csound 5.01 release

by Istvan Varga

Source and binary packages can be downloaded from here: http://sourceforge.net/project/showfiles.php?group_id=81968 The following Linux binaries are available; these all include the HTML manual as well: Csound5.01-i386d.tar.gz this was built on SuSE 9.3 (x86, GCC 3.x) with double precision floats, and includes a simple GUI installer Csound5.01-i386f.tar.gz same as above, but with single precision floats Csound5.01-x86_64d.tar.gz same as Csound5.01-i386d.tar.gz, but for the AMD64 platform Csound5.01-x86_64f.tar.gz same as above, but single precision floats Csound5.01_i686.rpm an RPM package built on SuSE 10.0 (x86, GCC 4.0) with both single and double precision floats, and includes the following additional features that are not available in the .tar.gz packages: * csoundapi~ object for PD (32 bit floats only) * CsoundVST (GUI frontend and Python module for algorithmic composition; 64 bit floats only) * STK (Perry Cook's Synthesis ToolKit) opcodes * VIM files for syntax highlighting and keyword help --------------------------------------------------------------------------- Changes since Csound 5.00 ------------------------- New features: Made it possible to load opcode plugins only when the opcode is actually used. New opcodes: New track processing opcodes for PVS system: trscale - streaming partial track frequency scaling trshift - streaming partial track frequency shifting trsplit - takes an input containg a TRACKS pv streaming signal and splits it into two signals according to a k-rate frequency 'split point'. trmix - takes two inputs containg TRACKS pv streaming signals and mixes them into a single TRACKS stream trfilter - filters a TRACKS pv streaming signal using an amplitude response curve stored in a function table trcross - streaming partial track cross-synthesis trhighest - extracts the highest-frequency track from a streaming track input signal trlowest - extracts the lowest-frequency track from a streaming track input signal binit - PVS tracks to amplitude+frequency conversion barmodel - creates a tone similar to a struck metal bar max - produces a signal that is the maximum of any number of input signals min - produces a signal that is the minimum of any number of input signals maxabs - produces a signal that is the maximum of the absolute values of any number of input signals minabs - produces a signal that is the minimum of the absolute values of any number of input signals maxaccum - accumulates the maximum value of audio signals minaccum - accumulates the minimum value of audio signals maxabsaccum - accumulates the maximum of the absolute values of audio signals minabsaccum - accumulates the minimum of the absolute values of audio signals Changes: Several opcodes and opcode groups have been moved out of the Csound library and stdopcod library into separate plugins (vbap, babo, grain4, hrtferX, PhisEm opcodes). Improvements in JACK plugin to allow lower latency and remove some restrictions on buffer sizes. Bug fixes: Bug fixes in FLsetVal and FLsetVal_i; allow buttons and button banks in FLsetVal; fixed handle output of FLbutBank (not sure if this is safe); implemented cursor size parameter for FLknob. Fixed bugs in i-rate ZAK opcodes. Fixed hang on very short note before end of score or section. Added hacks to fix the problem of the else branch of an if/then/else always being executed at i-time. Fixed crash on 'then' or 'goto' in variable names in conditional expression for if/elseif. Fixed crashes on missing whitespace between if/elseif and '(' and on extra ')' in expressions. and of course a number of minor bug fixes all over Changes: 2006-03-16 Istvan Varga <ivarga(a)csounds.com> * Opcodes/sftype.h: check for MacOS 9 or PowerPC, and define WORDS_BIGENDIAN on those platforms. 2006-03-13 Anthony Kozar <anthonykozar(a)sbcglobal.net> * Top/main.c: Made TYP_AIFF the default for MacOS 9. * Engine/entry1.c: Removed duplicate OENTRYs. 2006-03-12 jpff <jpff(a)codemist.co.uk> * Opcodes/bilbar.c (bar_run): Corrected boundary condition 2006-03-11 Istvan Varga <ivarga(a)csounds.com> * Engine/express.c: fixes in extending tokenstring buffer 2006-03-10 Anthony Kozar <anthonykozar(a)sbcglobal.net> * Opcodes/minmax.c: * SConstruct: Added new 'minmax' plugin library with opcodes for finding minimum and maximum values among several signals. 2006-03-10 Michael Gogins <gogins(a)pipeline.com> * CSD style command lines in CsoundVST are now translated to orc/sco style before performance in order to save having to edit the command line after loading some CSD files. 2006-03-08 Istvan Varga <ivarga(a)csounds.com> * Made it possible to load opcode plugins only when the opcode is actually used. 2006-03-07 jpff <jpff(a)codemist.co.uk> * Engine/otran.c: Removed DTYPE and lclnxtdcnt as not used 2006-02-25 Michael Gogins <gogins(a)pipeline.com> * Updated SConstruct, custom.py, and Windows installer to build and install PortMidi. 2006-02-24 Istvan Varga <ivarga(a)csounds.com> * InOut/rtjack.c: Use thread locks instead of calling usleep() in a loop to implement blocking I/O; the -+jack_sleep_time option is now deprecated and ignored. Allow non power of two values for -B. Setting -b to the same value as the JACK buffer size is no longer required. * Engine/insert.c: * Engine/musmon.c: Alternate fix to problems on very short (less than 1/2 control period) notes; the previous fix introduced a new bug that resulted in early termination of the score in some cases. * H/version.h: * installer/misc/csound.spec.in: Updated version number from 5.00.1 to 5.01.0 to reflect the addition of new opcodes. 2006-02-24 Victor Lazzarini <Victor.Lazzarini(a)nuim.ie> * Opcodes/psynth.c new track processing opcodes (also added manual pages): trscale, trshift, trsplit, trmix, trfilter, trcross, trhighest, trlowest, binit. 2006-02-15 Istvan Varga <ivarga(a)csounds.com> * InOut/widgets.h: moved file from H/ * InOut/widgets.cpp: bug fixes in FLsetVal and FLsetVal_i allow buttons and button banks in FLsetVal fixed handle output of FLbutBank (not sure if this is safe) implemented cursor size parameter for FLknob 2006-02-13 Istvan Varga <ivarga(a)csounds.com> * OOps/ugrw1.c: fixed bugs in i-rate ZAK opcodes 2006-02-09 Istvan Varga <ivarga(a)csounds.com> * Engine/rdorch.c: splitline(): made checking for invalid characters stricter fixed labels before else/endif allow bitwise NOT operator in UTF-8 format 2006-02-06 Istvan Varga <ivarga(a)csounds.com> * Engine/entry1.c: cogoto requires an i-rate conditional * Engine/musmon.c: fixed hang on very short note before end of score or section * Engine/rdorch.c: added hacks to fix the problem of the else branch of an if/then/else always being executed at i-time. Fixed crash on 'then' or 'goto' in variable names in conditional expression for if/elseif (still does not work if there are no parentheses around the conditional expression). 2006-02-03 Istvan Varga <ivarga(a)csounds.com> * Engine/rdorch.c: fixed crash on extra ) in expressions * Engine/rdorch.c: fixed crash on missing whitespace between if/elseif and ( this needs more testing

19 years, 6 months

[linux-audio-dev] Re: linux-audio-dev] LADSPA processing: ams, om, ... Anything else?

by Kjetil S. Matheussen

Andrew Gaydenko: > Are there alternatives for 'ams' and 'om'? My problems are: > > - 'ams' has not text fields to type-in controls values with needed > precision, sliders are not sufficient, > - 'om' engine has too many crashes (I see, it is normal, as the app is > under development). > > Anything else? PD is probably what you are looking for, http://pure-data.sf.net You can also use SND, but signal routing is text-based, http://ccrma.stanford.edu/software/snd/ http://www.notam02.no/arkiv/doc/snd-rt/html/rt-Z-H-1.html#node_toc_node_sec… gAlan might also be an alternative, http://galan.sourceforge.net/ And probably a bounch of others. :-)

19 years, 6 months

[linux-audio-dev] Amplitude modulation with LADSPA

by Andrew Gaydenko

The aim is: - to generate high frequency sine (say, 1-10KHz - carrier), - to modulate it's amplitude with low frquency signal (say, in 1-10Hz range), - to pass this modulated signal through some device, - to demodulate it, and, as a result, - to get that 1-10Hz signal. Is there sutable LADSPA plugins to construct this chain? Thanks in advance! Andrew

19 years, 6 months

[linux-audio-dev] Fiasco microkernel

by Frank Barknecht

Hallo, I just stumbled across this (via heise.de): http://os.inf.tu-dresden.de/fiasco/overview.html What are Fiasco's distinctive features (i.e., buzzwords)? Fiasco is a preemptible real-time kernel supporting hard priorities. It uses non-blocking synchronization for its kernel objects. This guarantees priority inheritance and makes sure that runnable high-priority processes never block waiting for lower-priority processes. When using L4Linux on top of Fiasco, hard-real-time applications can share one machine with time-sharing (Linux) applications. Fiasco is a real, second-generation µ-kernel protecting applications in address spaces. Thanks to its efficient task and context switching mechanism and its performace-oriented design, the performance penalties induced by address-space security are neglible - much smaller than in older, first-generation µ-kernels like Mach. Sounds somehow interesting. Ciao -- Frank Barknecht _ ______footils.org_ __goto10.org__

19 years, 6 months

[linux-audio-dev] CLI wanted - Need PCM to generic SBout on Smoothwall-2 stock kernel

by muzak24h

3 reasons I am posting here: - There are millions of DIY Linux firewalls running on light-kernels (Smoothwall alone reports > million active installs) with no generic Sound blaster support. - Most users, even Linux CLI familiar like myself, will not trade security to swap a kernel on a firewall and break the update mechanism that keeps things secure. - These millions of firewalls have CPU cycles to spare and sit around waisting power and many users would like a way to do audio out. I have posted over a year ago on the SW - UK forum and many are interested and waiting. What is needed: - PIC timer-based code (8259 chip?) to ouput wav direct to SB-out with CLI parms to set generic SB volume, filename, and loop option. Perhaps I'm asking for too much? - Maybe, even pointers in the right direction would help. In fact, if this is easy... just post it in "homebrew mods" at smoothwall.org's community forum. - I will take positive responses here, and duely credit them - This is for everyone! -- View this message in context: http://www.nabble.com/CLI-wanted---Need-PCM-to-generic-SBout-on-Smoothwall-… Sent from the linux-audio-dev forum at Nabble.com.

19 years, 6 months

[linux-audio-dev] A proposal

by james＠dis-dot-dat.net

Hello all. I've been busy and off the lists for a while and will be for a while, but I just wanted to pass on something that could be very useful/important. Please don't stop reading when you read "Microsoft", "scheme" or "money". I'm not asking for bank details :) There is a scheme for lecturers/researchers working in computer science and its various flavours in developed countries in the EU and USA to travel to developing countries for research or teaching. Microsoft will put up the travel money if the hosting institution will cover living expenses. I think they will supply up to 1,300 pounds. It works a bit like on-line dating - people that want lecturers/researchers sign up, as do lecturers and researchers. Then you see if there's a match and take it from there. So, if you're a lecturer or researcher that feels like taking you skills into developing countries for a week or two, take a look. Also, if you're from an institution in a developing country and would like to have a visiting lecturer/researcher, sign up. You might think this is totally the wrong place (actually, I cross-posted so I should say "places"), but here are my reasons: 0. I know there are a few lecturers/researchers on the list. 1. Very few people have signed up due to poor advertising. This means the money could just not get spent when it could do some real good. It also means that any potential collaborations are very likely to get funded. 2. Microsoft is probably the least favoured company on these lists BUT think of this as a way to get some of their ill-gotten gains spent doing something good. 3. It really does look like a good deal. I can't see any reason to suspect Microsoft are doing anything evil on this one. I'm going to sign myself up - why not join me. Details: http://research.microsoft.com/ero/icd/inspire/ Feel free to ignore this mail, but I'd appreciate not getting flamed ;) James -- "I'd crawl over an acre of 'Visual This++' and 'Integrated Development That' to get to gcc, Emacs, and gdb. Thank you." (By Vance Petree, Virginia Power)

19 years, 6 months

[linux-audio-dev] OSS, Line in directly to Line out?

by Tobias Scharnberg

Hello List, this might really be a dumb question, but anyway: When I have an Audio-Source on Line-In or MIC, what do I have to do to directly output it to LineOut? Is it possible to directly put it through by using /dev/mixer ? Or do I have to record the Line-In audiostream in a buffer and then read from the buffer for output? At least duplex capability is given in my device! And: I really can't use ALSA for that device, which is a shame. Any hints or suggestions are highly welcome. Tobias

19 years, 6 months

[linux-audio-dev] OSS, Sound playback too fast

by Tobias Scharnberg

Hello list, before someone tells me to use ALSA - the AC97 codec on my Arm-Board does not work wit ALSA according to the distributor... so it seems I have to stick with OSS. I opened a 16 bit 44100 wav-file with libsndfile and wrote the PCM to a buffer. Then I configure the card with 16 bit NE, 44100 and with 5 fragments of the size of 2048 bytes. According to the readback values, all data was set by OSS. In my main loop I use SNDCTL_DSP_GETOSPACE to poll the buffer. Whenever it shows free fragments, I write more data to the card. What I experience is that playback is too fast. I can make it slower by reducing the buffer-size or by setting a very high usleep value so that all fragments practically stay free. There is a precompiled madplayer on the device and it plays perfectly... can someone give me a hint what went wrong? Thanks! Tobias

19 years, 6 months

[linux-audio-dev] Call for help for LinuxTag2006

by Arnold Krille

Hi all, as every year the famous german LinuxTag is taking place. This year in Wiesbaden from 3. to 6. May. Yes, this is just one week after LAC2006, which has several advantages and disadvantages: + It is a good chance to come to Germany for LAC, have one or two days of holiday and then join the LA-Group at LinuxTag! + Maybe even repeat your LAC-Talk at LinuxTag? (see www.linuxtag.org for details on the Call-for-Papers but be aware that it ends January 15...) + Wiesbaden is more in the center of germany so perhaps some LA-folks from the north of germany can join us? - The new place for LinuxTag together with LAC being a week before enforce two of the main-booth-members of the last years (Christoph Eckert and Frank Neumann) to be only a visitor at LinuxTag or even less... That leaves a hole in the organisational part. :-( So here is my call: I am willing to do some work organizing a booth and a group of staff but I need YOUR help! If you are a german LA[DU]-member and have some spare time, join in! A booth at LinuxTag is a good opportunity to present Linux Audio to the people, not only to developers but more to users. The crowd is mostly industry (producers, technicians, musicians) at the weekdays and home-recording-users at the weekend. Don't be afraid, there won't be much questions about setting up drivers for consumer-cards (and If there are, we usually send them to their distributions booth :-) ). But there will be a lot people thinking about using your app in studio! So you definitly don't want to miss this chance! If I get positive answers from at least two other people by weekend, I will apply for a booth and things start rolling, so don't hesitate, check your calendar, plan for another week of holiday and join me (us?). So long and thanks for all the fish, Arnold -- visit http://dillenburg.dyndns.org/~arnold/ --- Wenn man mit Raubkopien Bands wie Brosis oder Britney Spears wirklich verhindern könnte, würde ich mir noch heute einen Stapel Brenner und einen Sack Rohlinge kaufen.

19 years, 6 months

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Linux-audio-dev