Linux-audio-dev March 2009

linux-audio-dev@lists.linuxaudio.org

50 participants
36 discussions

by Fons Adriaensen

Hello all, Jconv-0.8.0 is now available at the usual place <http://www.kokkinizita.net/linuxaudio/downloads> New in this release: - New command line option -L <nsamples>, tries to compensate for 'nsamples' of processing latency. - Jack ports can now be given meaningful names and optionally be connected, by commands in the config files. - Some new reverb IRs available in a separate package 'jconv-reverbs'. Includes ambisonic and stereo IRs of the concert hall of La Casa della Musica, and the former Santa Elisabetta church, now La Casa del Suono, in Parma. Enjoy ! -- FA Laboratorio di Acustica ed Elettroacustica Parma, Italia Be quiet, Master Land; and you, Professor, will you be so good as to listen to me ?

15 years, 1 month

[ann] QuteCsound 0.4

by Andres Cabrera

Hi all, (And apologies for cross posting) I'm pleased to announce QuteCsound version 0.4. This version incorporates new features and bug fixes arising from the 3 previous Release Candidate releases. QuteCsound is a simple frontend for Csound featuring a highlighting editor with autocomplete, interactive widgets and integrated help. It is a cross-platform drop in replacement for MacCsound (it can open files created in MacCsound), and aims to be a simple yet powerful and complete development environment for Csound. QuteCsound 0.4 has been tested on Windows, OS X, Linux and Solaris, and it is free software released under the GPL. You can get it here: http://sourceforge.net/project/showfiles.php?group_id=227265&package_id=275… There's more information here: http://qutecsound.sourceforge.net/ Questions, comments and suggestions can be posted to the main Csound mailing list, or join the QuteCsound users mailing list at: http://lists.sourceforge.net/lists/listinfo/qutecsound-users Thanks very much to all the people (particularly Joachim Heintz), who have provided great feedback and ideas to improve QuteCsound. Also a big thanks to Andy Fillebrown for the fixes for Windows and for preparing the Windows installers. Enjoy! Andrés Changes from version 0.4RC2: New: - Added "_Browse" channel for value buttons, which open a browse file dialog and send the selected file name to any widget with the same channel which can receive strings, like LineEdit. Added this feature to the reserved channels example. - New tutorials and example files, with clearer names. The examples can now be run directly WITHOUT saving, which is very handy especially for testing audio IO. - Console text font color can now be changed - Added a close tab button on the right corner of the tabs panel. - Modified execute code for Windows (for external utilities and terminal) - Added option to enable/disable line wrap - Added clear option to console context menus - MacCsound output filename is now parsed and added to the options - Added new FM and additive examples Fixed: - Improved stability - Files with extensions different to csd, orc and sco can now be opened - External programs and terminal are now launched correctly on all platforms - Fixed storing changes in widget panel when tab changes - Graph widget now displays graphs generated by ftgen - Widget values are now properly sent for the first control period - Files now open properly on OS X when double clicked from the Finder - Fixed problem when buffering messages - Fixed problems with filenames with spaces when rendering or opening in external programs - MacCsound sections are only created if save Widgets preference is set - New default file more consistent with current state. - Files are now not marked as modified when changing tabs - Fixed path of Manual for newer versions - Fixed resizing and moving widget edit frames when changed from the properties dialog

15 years, 1 month

Anyone out there familiar with the code base of sonic visualizer?

by Nathanael Anderson

Anyone on the list familiar with the code base of sonic visualizer? I'm wondering if it would be possible to make a standalone program that works multiplatform and can read live audio data, and return an array of the likelyhood that each note was played in an audio stream in the previous 20ms (not a hard limit, just an example). Similar to how the melodic range visualization works, everytime x samples are read, check which chords, and octives they fall into, so say there is an 88 position array of all notes that are on a keyboard, and middle c is played, so position 60 in the array would get a high value. I want to be able to work off acoustic data. This in not going to be used to drive a sequencer or anything. I just want to be able to check if said note was played. Thanks in advance for any feedback. If there is another program that you think would provide better results please let me know. I've tried aubio, and it crashed all the time on me. Nathanael

15 years, 1 month

Re: [LAD] [alsa-devel] [PATCH] [SOUND] recording gain control

by Viral Mehta

Takashi Iwai wrote: > At Tue, 10 Mar 2009 10:00:13 +0100, > Clemens Ladisch wrote: > >> (CC alsa-devel) >> >> Viral Mehta wrote: >> >>> Hi, >>> >>> I am trying to do gain control while RECORDING for my Audio Mic device. >>> >>> My application opens /dev/mixer device and calls ioctl(fdmixer, >>> MIXER_WRITE(SOUND_MIXER_MIC), ...) >>> >>> But, the call fails. It traces to sound/core/oss/mixer_oss.c file and >>> snd_mixer_oss_put_volume1() function. >>> It never falls in "if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME)" >>> as condition "if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) " >>> comes as false. >>> >>> I think there is a bug in kernel and I think it should be like as below, >>> >>> --- sound/core/oss/mixer_oss.c 2008-12-03 13:24:02.000000000 +0530 >>> +++ sound/core/oss/mixer_oss.c 2009-03-09 16:22:06.548766896 +0530 >>> @@ -688,7 +688,7 @@ static int snd_mixer_oss_put_volume1(str >>> >>> if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) { >>> snd_mixer_oss_put_volume1_vol(fmixer, pslot, >>> slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right); >>> - if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME) >>> + } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME) { >>> snd_mixer_oss_put_volume1_vol(fmixer, pslot, >>> slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right); >>> } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) { >>> snd_mixer_oss_put_volume1_vol(fmixer, pslot, >>> slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right); >>> >> Your mailer mangled the patch; see linux/Documentation/email-clients.txt. >> > > Also, the current code behaves intentionally so (as it's designed for > mic-loopback volume). > > A more feasible fix would be to add another if check for *_CVOLUME > instead of moving it. > > > Oh okie. It makes sense. I just sent out a patch on LAD. Should I resubmit with what you proposed ? > Takashi > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo(a)vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ > > > Email Scanned for Virus & Dangerous Content by : www.CleanMailGateway.com > > > -- _____________________________________________________________________ Disclaimer: This e-mail message and all attachments transmitted with it are intended solely for the use of the addressee and may contain legally privileged and confidential information. If the reader of this message is not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, copying, or other use of this message or its attachments is strictly prohibited. If you have received this message in error, please notify the sender immediately by replying to this message and please delete it from your computer. Any views expressed in this message are those of the individual sender unless otherwise stated.Company has taken enough precautions to prevent the spread of viruses. However the company accepts no liability for any damage caused by any virus transmitted by this email. __________________________________________________________________________

15 years, 1 month

[PATCH] [SOUND] Fixes recording gain control

by Viral Mehta

Have tested two usb audio mic devices. At the time of initialization, SNDRV_MIXER_OSS_PRESENT_PVOLUME bit is not set for MIC (slot 7). So, the same should not be checked when an application tries to do gain control for audio recording devices. Just check slot->present for SNDRV_MIXER_OSS_PRESENT_CVOLUME independently. Verified with a simple application which opens /dev/dsp for recording and /dev/mixer for volume control. Signed-off-by: Viral Mehta <viral.mehta(a)einfochips.com> --- sound/core/oss/mixer_oss.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/sound/core/oss/mixer_oss.c b/sound/core/oss/mixer_oss.c index 4690b8b..919c7eb 100644 --- a/sound/core/oss/mixer_oss.c +++ b/sound/core/oss/mixer_oss.c @@ -690,7 +690,7 @@ static int snd_mixer_oss_put_volume1(struct snd_mixer_oss_file *fmixer, if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) { snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right); - if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME) + } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME) { snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right); } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) { snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right); -- 1.5.3.3 -- _____________________________________________________________________ Disclaimer: This e-mail message and all attachments transmitted with it are intended solely for the use of the addressee and may contain legally privileged and confidential information. If the reader of this message is not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, copying, or other use of this message or its attachments is strictly prohibited. If you have received this message in error, please notify the sender immediately by replying to this message and please delete it from your computer. Any views expressed in this message are those of the individual sender unless otherwise stated.Company has taken enough precautions to prevent the spread of viruses. However the company accepts no liability for any damage caused by any virus transmitted by this email. __________________________________________________________________________

15 years, 1 month

[Fwd: Audio mixer recording gain control]

by Viral Mehta

Hello all, I would like to know feedback here if possible. Or is it a wrong place to submit patches which I "think" fixes some issue in oss simulation layer ? > Hi, > > I am trying to do gain control while RECORDING for my Audio Mic device. > > My application opens /dev/mixer device and calls ioctl(fdmixer, > MIXER_WRITE(SOUND_MIXER_MIC), ...) > > But, the call fails. It traces to sound/core/oss/mixer_oss.c file and > snd_mixer_oss_put_volume1() function. > It never falls in "if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME)" > as condition "if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) " > comes as false. > > I think there is a bug in kernel and I think it should be like as below, > > --- a/sound/core/oss/mixer_oss.c 2008-12-03 13:24:02.000000000 +0530 > +++ b/sound/core/oss/mixer_oss.c 2009-03-09 16:22:06.548766896 +0530 > @@ -688,7 +688,7 @@ static int snd_mixer_oss_put_volume1(str > > if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) { > snd_mixer_oss_put_volume1_vol(fmixer, pslot, > slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right); > - if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME) > + } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME) { > snd_mixer_oss_put_volume1_vol(fmixer, pslot, > slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right); > } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) { > snd_mixer_oss_put_volume1_vol(fmixer, pslot, > slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right); > > > Thanks, > Viral > > > > > > -- _____________________________________________________________________ Disclaimer: This e-mail message and all attachments transmitted with it are intended solely for the use of the addressee and may contain legally privileged and confidential information. If the reader of this message is not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, copying, or other use of this message or its attachments is strictly prohibited. If you have received this message in error, please notify the sender immediately by replying to this message and please delete it from your computer. Any views expressed in this message are those of the individual sender unless otherwise stated.Company has taken enough precautions to prevent the spread of viruses. However the company accepts no liability for any damage caused by any virus transmitted by this email. __________________________________________________________________________

15 years, 1 month

LAC2009 update

by Fons Adriaensen

Hello all, Some good news: there definitely will be the Linux Sound Night during LAC2009. At the moment there are two possible locations, the choice has not yet been made. One is a nice bar located in a new industrial area outside the center - they only have one resident near (100m) but we may still have to watch the SPL because of that single resident. The other is a rather sleezy but otherwise OK place in a post-industrial area, here nobody will complain whatever we do. Both places (in particular the second) are a bit to far from the center for an easy walk, but transport will be organised. I'd like all who proposed to play at the LSN to confirm their presence (drop me a line), and there is still room for more. Wednesday the 15th (day before the conference) there will be the pizza evening for the early arrivals. This will be at 'Alfonso' (no relation) on Via Emilia Est, according to some the best pizzeria in Parma. It's also near the Auditorium Paganini making it a good place for a pre-concert pizza. Please let me know if you will be there as I'll have to book the places. Sunday evening we'll have the unofficial LAC2009 dinner. At the moment I'd like everyone who plans to come to LAC2009 to register so we can have an idea of the size of the crowds to expect, and of the number of proceedings to print. <http://lac.linuxaudio.org/2009> See you all in Parma, -- FA

15 years, 1 month

About mailing lists and linuxaudio.org (Was: Debian Multimedia Team)

by MarcO'Chapeau

On Mon, 9 Mar 2009 11:09:34 -0700, Mark Knecht <markknecht(a)gmail.com> wrote: > In general I agree with what I understand about linuxaudio.org and > your point of view. > > Probably I need to make a more nuanced distinction between > linuxaudio.org and linux-audio-user(a)lists.linuxaudio.org. It's likely > not true for you running all this stuff but from the outside I see the > two as very intertwined. If the business of linuxaudio.org were to > become a large part of what is discussed on this list, or the list was > to start pushing folks to become Debian based as a policy, then I'd be > disappointed. I think it's best if this list is distro neutral. What > linuxaudio.org does is a different thing. Well, hello again, this time from the list-admin part of me. I would like to clarify this for those who might be here since recently and who might not know of the history of our 4 favorite lists. The hosting at linuxaudio.org is relatively recent, and was chosen in an effort to make things look a little more organized. Our lists are kindly hosted there by the Virginia Tech Department of Music and DISIS. They were previously hosted at the University of Columbia (at the time there were 3 lists ; linux-audio-tuning did not yet exist). The first list created was, if I'm not mistaken, linux-audio-dev, a long time ago, in a galaxy far far away (1998 ?). While our lists are hosted at linuxaudio.org, they do not belong to anyone but the whole community that make them as lively and entertaining as they are. Moreover, they cannot be in any way related/associated/linked/whatever to one particular distribution. So feel free to talk about any distro you feel is good for audio, even slackware if you wish :p And one last thing, just so everything is crystal clear, since these list belong to everyone, you are also entitled to fire the list admin (that would be me) at anytime if I start being really bad at that ;) Kind regards, Marc-Olivier Barre, The guy who gets to read a lot of spam to keep those lists clean.

15 years, 1 month

Re: [LAD] [LAU] Join the Debian Multimedia Team! (to improve the state ofLinux audio)

by Ivica Ico Bukvic

> How does that effect me for instance as a Gentoo user? Please consider > whether LAU would still be a place of value to those of us that aren't > Debian/Ubuntu based. > > I don't mind the occasional distro specific conversation. I wouldn't > want to see that ever become more than 1% of what's discussed on a > list like this. > > - Mark Ideally, we would also want to have Gentoo involved in linuxaudio.org. However please note that I cannot (nor do I want to) coerce anyone to join linuxaudio.org. Yet, here we are with a potential opportunity to have Debian join us and my thoughts are we should not pass this up. I can only hope that Gentoo will join us as well--but that is not my call... Best wishes, Ico

15 years, 1 month

Re: [LAD] [Jack-Devel] [FFmpeg-devel] [PATCH] libavdevice: JACK demuxer

by Olivier Guilyardi

Michael, Paul has answered you on jack-devel. See below. Note: I'm cross-posting this mail to linux-audio-dev, since Michael has recently subscribed to it. At least, we should be able to discuss together in there. Paul Davis wrote : > I have no idea how any of you have kept this conversation going when one > of the main protagonists is not even subscribed to one of the two > mailing lists, and i suspect that one of the others isn't subscribed to > the other. perhaps the FFmpeg-devel list doesn't require membership. > > anyway, i've finally had enough of reading Michael's stuff about > buffers, timing and so forth and felt obligated to comment. > > michael - i would politely request that you stop shooting off at the > mouth about stuff that the JACK community has been dealing with for more > than 9 years. > > you do not need to write your own ring buffer code - JACK's is LGPL'ed > and you are free (and probably even recommended) to copy it. > furthermore, you would be very foolish to imagine (especially based on > your incredibly naive comments about uint8_t) that you understand the > subtleties of these buffers. the JACK community (and a couple of other > exclusively audio-focused development groups) have been working with > this buffer design for many, many years, and we are absolutely confident > that our buffers are (a) SMP/multi-core safe (b) as efficient as they > can be without using assembler. you should also be aware that there are > very good arguments for the current structure of the ringbuffer code, > which explicitly does NOT use any memory barriers. if you don't > understand why it works without them, then you should probably refrain > from commenting on the design of these buffers at all. > >

15 years, 1 month

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Linux-audio-dev March 2009