Linux-audio-dev

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7516 discussions

by Henrik von Coler

Dear lists, (German below) we are looking for participants for a user study that deals with the use of timecode vinyl for spatial sound control on Ambisonics systems. Our call is especially aimed at people who have experience with vinyl (DJing) or spatial audio technologies. The experiment will be conducted from 10.09. until 13.09. in the Electronic Studio of the TU Berlin: https://www.ak.tu-berlin.de/menue/fachgebiet_audiokommunikation/adresse_und… The test duration is about one hour and will be compensated with 10 €. For students, the experiment can also be counted as a listening test participation. If you are interested, you can make an appointment via this Doodle: https://doodle.com/poll/t3a65f8bsc8az6pz Best regards Henrik von Coler Liebe Listen, wir suchen Teilnehmer*innen für eine Nutzerstudie, die sich mit der Verwendung von Timecode Vinyl zur räumlichen Klangsteuerung auf Ambisonics-Sysemen befasst. Unser Aufruf richtet sich im Besonderen an Menschen, die über Erfahrung im Umgang mit Vinyl (DJing) oder Spatial Audio Technologien verfügen. Der Versuch wird vom 10.09. bis zum 13.09. im Elektronischen Studio der TU Berlin durchgeführt: https://www.ak.tu-berlin.de/menue/fachgebiet_audiokommunikation/adresse_und… Die Versuchsdauer beträgt etwa eine Stunde und wird mit 10€ entschädigt. Für Student*innen läss sich der Versuch auch als Teinahme am Hörversuch anrechnen. Wer Interesse hat, kann sich über diesen Doodle einen Termin sichern: https://doodle.com/poll/t3a65f8bsc8az6pz Viele Grüße Henrik von Coler -- Henrik von Coler Elektronisches Studio, Fachgebiet Audiokommunikation Electronic Music Studio, Audio Communication Group Technische Universität Berlin Fakultät I Geistes- und Bildungswissenschaften Institut für Sprache und Kommunikation Faculty I Humanities Institute of Speech and Communication Einsteinufer 17c, Sekr. EN 8, 10587 Berlin Germany Tel: +49 (0)30 314 22327 Fax: +49 (0)30 314 21143 voncoler(a)tu-berlin.de www.ak.tu-berlin.de

6 years, 2 months

Berlin Linux Audio meeting @ c-base 2019-09-10

by Daniel Swärd

Hi all. The next meeting is on Tuesday the 10th of September at c-base. I'll be in the mainhall from 20:00. This time I'm bringing a Sensel Morph that I bought recently. Let's see what we can do with that. :-) Cheers /Daniel PS Let's keep the follow-up discussion in the thread on LAU. DS

6 years, 2 months

A bit of 2013 nostalgia!

by Louigi Verona

Hey everyone! I have recovered three tracks that I made during LAC2013. Restored from their sorry state to something more palatable, these 10 minutes of music will allow you to join me on this nostalgic journey and reminisce about times long gone! https://soundcloud.com/louigiverona/sets/lac2013 On track one you can hear samples taken out of the lecture by Rui on QStuff, which I recorded with a mic right there and immediately incorporated into the music. "You are the user!" This is true Linux Audio community lore :D Louigi Verona https://louigiverona.com/

6 years, 2 months

Sonoj Convention 2019 Announcement: Visitor registration, Call for talks, Donations

by Sonoj Convention

Dear Linux Audio Developers, The third annual Sonoj Convention ( https://www.sonoj.org ) will be taking place this upcoming October 26th-27th 2019 in Cologne, Germany. The convention is focusing on the combination of music production and open source software with a priority on practical music production. At Sonoj there will be talks, demonstrations, and workshops from demonstrating basic workflows to detailed instructions on how to subtly improve your sound. While the event will take place in Germany, all presentations and workshops will be in English, recorded and streamed to make them easily accessible to a wide audience. We want to welcome everyone, regardless of your musical or technical background. To get a better idea of what to expect out of Sonoj, you can find information and recordings from last year's convention in our archives: ( https://sonoj.org/archive ) As it was last year, admission to the convention is free, though donations are very much welcome. - Visitor Registration is now possible. The space is limited so please register on our website now. ( https://sonoj.org/register.html ) - We are looking for talks, demonstrations and workshops. If you would like to contribute, please send an informal and short e-mail with your ideas to info(a)sonoj.org - Donations are very welcome. Even if you don't attend personally please consider supporting a non-profit event to promote open source music making and production. We accept direct bank transfer and paypal ( https://www.sonoj.org/donate.html ) Yours, Nils Hilbricht https://www.sonoj.org

6 years, 2 months

Web Audio Conference 2019 - Call for Diversity Tickets

by Gerard Roma

*Apologies for cross-postings* # Web Audio Conference 2019 - Call For Diversity Tickets https://www.ntnu.edu/wac2019/call-for-diversity We have a limited number of diversity tickets available to attend the Web Audio Conference 2019 in Trondheim (4-6 December, 2019), thanks to our sponsors (https://ntnu.edu/wac2019/sponsors). This may cover your conference ticket and/or travels as an author or other attender. We have also tried to keep the conference fees as low as possible to encourage interested attendees to come (https://www.ntnu.edu/wac2019/registration). The diversity tickets will be prioritized for attenders from lower-income countries and backgrounds, and underrepresented communities in web audio. To be eligible, you need to fill in the following online survey telling us how we can help you, which should take 5-10 minutes: http://tiny.cc/WAC19-call-diversity An expert diversity committee is constituted who will decide from the candidates by September 15, 2019. ## Important dates * September 8, 2019 (Anywhere on Earth): Deadline diversity tickets application. * September 15, 2019: Notification of grantees. * September 22, 2019: Deadline early-bird ticket. * December 4-6, 2019: The conference. Please do not hesitate to contact the diversity committee, diversity(a)wac2019.ntnu.no, if you have questions. You can find more information about the diversity theme here: https://www.ntnu.edu/wac2019/diversity-theme Also, you can find a preliminary draft of the programme and a list of conference venues on our website: https://www.ntnu.edu/wac2019/programme https://www.ntnu.edu/wac2019/venues-and-maps

6 years, 2 months

IRT gets it: open-source libraries for object-based audio

by Jörn Nettingsmeier

Hi *! Haven't checked this out in any detail, but the German Institut für Rundfunktechnik (a sort of science outsourcing provider for public broadcast over here, with an impressive track record of ground-breaking work) have released a substantial body of code on object-based audio under an Apache open-source license: https://lab.irt.de/more-open-source-for-open-object-based-audio-workflows/ If anyone gets interested and finds it useful, please give them a little shout-out - I guess our fellow open-source enthusiasts within those institutions can use some support! All best, Jörn -- Jörn Nettingsmeier Tuinbouwstraat 180, 1097 ZB Amsterdam, Nederland Tel. +49 177 7937487 Meister für Veranstaltungstechnik (Bühne/Studio), Tonmeister VDT http://stackingdwarves.net

6 years, 2 months

Proscenion

by Benoît Rouits

Hello list, old reader of the LAU list, i decided to subscribe to the LAD to present a little project i wrote, proscenion. Proscenion is a (GPL) software that renders true phase stereo with Jack by placing jack sources into a graphical canvas and reap the stereo capture rendered on the fly. The software is not perfect and not very well written, but it is functionnal. It is written upon Gtk3 and GooCanvas: http://brouits.free.fr/proscenion/ https://gitlab.gnome.org/be1/proscenion/ Hope you will like it and ban panpot stereo from your next tune ;-) Cheers, Benoît

6 years, 3 months

Berlin Linux Audio meeting @ c-base 2019-08-13

by Daniel Swärd

Hi all. As usual the second Tuesday of the month is upon us. I'll be in the mainhall from 20:00. See you there. Suggested discussion topic: Anyone going to Chaos Communication Camp? Should we do a LAU thing there? Cheers /Daniel

6 years, 3 months

Writing a driver for a device which clears the buffer on the start trigger

by Paul Pawlowski

Hello, I'm writing a driver for a device which clears the BAR DMA buffer if I send the Start IO command to it. I'm not sure how to workaround this issue. I have got the driver working to some extent by moving the Start IO command code to the open() callback instead of the trigger(SNDRV_PCM_TRIGGER_START) however that's obviously a hack and causes issues (the first ~0.1s of audio is lost). I also tried to memcpy() the memory to a temporary buffer in the SNDRV_PCM_TRIGGER_START trigger, however that turned out to be a performance bottleneck (it took about ~300ms to copy that memory back, which is ~the period size, probably related). I'm also aware that using some sort of a copy buffer could work, but that sounds like a performance waste as it's not needed after the playback is started. I tried to search for existing kernel drivers utilizing a similar mechanism (there's the SNDRV_PCM_INFO_DOUBLE flag after all), but could not find any results that made sense. Any help is appreciated. Thank you, Paul Pawlowski

6 years, 3 months

jack meterbridge 0.9.2 update / maintenance

by Stephan Bourgeois

Hi there, I have been tinkering with Steve Harris' meterbridge 0.9.2 for jack. cf. https://github.com/stephanb2/jack-meterbridge 1. Refactored global variables so that the code builds on Debian 9.2. 2. Improved (?) the dpm IEC scale and ballistics. 3. Changed the PPM ballistics to use Fons Adriaensen's JMeters algorithm. I do however have a deeper question: what is the point of jack meterbridge? Given that the broadcast and podcast industry has moved to EBU-R128 and Ebumeter offers EBU R-128 metering. JMeters offers "nostalgia" PPM and VU meters with correct ballistics, more options, better graphics. The only thing missing would be a 4x oversampling true peak meter. Should meterbridge be maintained or should another metering app de bundled with jack? Note that I am not a C engineer, my background is Java and Python. Please send code review comments and shout if you see anything horrific. Let me know your thoughts. Cheers, Stephan. -- Sent from: http://linux-audio.4202.n7.nabble.com/linux-audio-dev-f58952.html

6 years, 3 months

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Linux-audio-dev