Re: [Sursound] 3D Array
On 2012-09-28, Jörn Nettingsmeier wrote: off the top of my hat, there is a toolkit available from t-labs at tu berlin, and iem graz has higher-order code for pd. A comprehensive, GPL'd ANSI C compatible codebase for arbitrary order? Give me the link right now, I want it. I *crave* for it. -- Sampo Syreeni, aka decoy - de...@iki.fi, http://decoy.iki.fi/front +358-50-5756111, 025E D175 ABE5 027C 9494 EEB0 E090 8BA9 0509 85C2 ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] 3D Array
On 09/28/12 09:22, Sampo Syreeni wrote: > On 2012-09-28, Jörn Nettingsmeier wrote: > >> off the top of my hat, there is a toolkit available from t-labs at tu >> berlin, and iem graz has higher-order code for pd. > > A comprehensive, GPL'd ANSI C compatible codebase for arbitrary order? > Give me the link right now, I want it. I *crave* for it. The "tascar toolbox" (http://linuxaudio.vegri.net/, see also LAC2012, http://lac.linuxaudio.org/2012/speakers?uid=10) has some 3rd order tools based on code from Jörn Nettingsmeier and Fons Adriaensen, and some horizontal only arbitrary order tools based on a paper by Martin Neukom (Ambisonics Panning, AES Convention 2007). All GPL (LGPL where possible). However, still alpha stage - it works fine for me, but documentation is minimal. Ok, and it is C++, not C. I think the arbitrary order code of SoundScapeRenderer is based on the same paper. - Giso ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] DIY MADI to ADAT converter - RE: "Digital Amplifiers" (Multichannel Amps with ADAT input)
Is it possible to create a ADAT interface for RPi from this information? That would be nice if "someone" did that for us :-) Bo-Erik -Original Message- From: sursound-boun...@music.vt.edu [mailto:sursound-boun...@music.vt.edu] On Behalf Of Dave Malham Sent: den 27 september 2012 15:24 To: Surround Sound discussion group Subject: Re: [Sursound] DIY MADI to ADAT converter - RE: "Digital Amplifiers" (Multichannel Amps with ADAT input) Thanks for pointing this out! What might be interesting to think about w.r.t. RPi's (given the lack of a full TDM type interface) is the possibility of modifying this to an Ethernet to ADAT interface. I haven't studied the design in detail but it might well be possible, given the fact that the MADI physical layer is done via an Ethernet chip, to change the function of the fpga to use an Ethernet stack to ADAT protocol, rather than MADI. Incidentally, someone once published the ADAT protocol after some reverse engineering (ah-hm) but there is much more info at www.wavefrontsemi.com/UserFiles/File/AL_Info/AL31/AppNotes/WavefrontAN3101-10 S-Mux Receiver for ADAT Optical Protocol.pdf and also at https://ackspace.nl/wiki/ADAT_project Dave ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] 3D Array
Hello Sampo, On 28 Sep 2012, at 4:01 am, Sampo Syreeni wrote: > On 2012-09-27, Joseph Anderson wrote: > >> Our goal is to have a complete system conveniently encompassing the tasks of >> encoding, processing, and finally decoding for artists and composers >> interested in working with Ambisonics. [...] > >> I see that you're working with Max/MSP at the moment. Our currently release >> of the ATK is as a SuperCollider library. > > This sort of a thing makes it easy for the composer, which is just wicked > cool. That makes people provide more content. That's the idea! :-) > But at the same time, it doesn't help the developer who wants to incorporate > ambisonic into hir software. There, I'm pretty sure what would be needed > would be an all-encompassing ANSI C conformant library. Yes... we did think of this. One of our thoughts was to use FAUST so that we could easily support a variety of platforms: http://faust.grame.fr/index.php/documentation/references/12-documentation/reference/52-arch-files-reference-art We ended for a variety of reasons (mostly manpower!!), we went straight for a SuperCollider3 implementation. FAUST has an online tool, which is useful to have a look: http://faust.grame.fr/index.php/online-examples > Does anybody around here have any ideas of how to produce something like > that? Not as an alternative to the ATK, but as a parallel implementation > aimed at the lower level implementers? Perhaps with some extra API's for low > level use? Preferably even sharing code, where possible? > >> At the moment we haven't implemented HOA features, but there are plans to >> begin with this aspect from January. > > There in particular I'd ask for help from various weird circuits, because > arbitrary order of HOA calls for some pretty weird code. It's numerically > funky even at fourth order, not to mention at the orders which approach a > hundred, which is what the highest WFS folks seem to do nowadays with their > simpler, linear arrays. I'm pretty sure the two frameworks could be folded > into a single library, just as they theoretically fold into the same > holophonic framework. So, does everybody work together for the common goal, > here? :) Sounds like a cool idea. For the ATK's first outing into HOA we're going to start with up to 3rd order, to keep life simple. My best, Jo ~~ Joseph Anderson Artist: http://joseph-anderson.org Ambisonic Toolkit: http://ambisonictoolkit.net -- next part -- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20120928/0db5d511/attachment.html> ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] 3D Array
Sampo Syreeni wrote: ... > So, does > everybody work together for the common goal, here? :) Ha, ha, good joke. -- Martin J Leese E-mail: martin.leese stanfordalumni.org Web: http://members.tripod.com/martin_leese/ ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
[Sursound] TSL Professional Products Ltd acquires SoundField
FYI... TSL Professional Products Ltd has acquired surround sound microphone and audio processing manufacturer SoundField Resolution Newsletter, end Sept 2012: http://app.streamsend.com/c/17109329/2459/c5LCPeJ/SYSn?redirect_to=http%3A%2F%2Fresolution.nodecube.net%2Fnews%2Flandingpages%2FEnd-September_Newsletter-14.html%23story224 TSL Professional Products Ltd (PPL) has acquired surround sound microphone and audio processing manufacturer SoundField. The acquisition broadens TSL PPL’s product portfolio in 5.1 audio for broadcast workflows. ‘With TSL PPL audio monitors becoming a standard fixture in many broadcast production facilities we can now bring a more complete offering to market and further our mission to help our customers deliver the highest quality sound to the viewer at home,’ said Chris Exelby, TSL PPL MD. ‘I am very excited about this acquisition and don’t think we could have put the future of SoundField’s legacy in better hands,’ added Pieter Schillebeeckx, head of research and development for SoundField. ‘The established global sales and marketing of TSL PPL will greatly improve the visibility of our unique microphone and upmix products worldwide. And the extensive manufacturing and design expertise of TSL PPL, combined with SoundField’s know-how, will ensure SoundField’s tradition of creating high-quality 5.1 audio equipment will continue to thrive and develop.’ -- Richard E ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] Question about plane waves, and the precedence effect
>> except its not quite the same effect. If I hear a plan(ish) wave in nature such as in thunder or a very distant giant waterfall Distant thunder is often an extreme case of Proximity effect. Velocity components are boosted at LF compared omni components. You encounter this if you are using TetraMic or properly aligned Soundield and there is a distant thunderstorm. Sometimes you will see XYZ, the Velocity Components go wild when nothing is happening on W, the Omni bit. Usually you can't hear anything either but can time the 'happenings' many seconds after the lightning. This is in spite of built in 24dB/8ve electrical filtering and effectively 36dB/8ve acoustic HP filtering. On TetraMic, the variable HP filter is usually good to get rid of this effect. ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
