[Sursound] [ccrma-events] CCRMA Bing Studio Concerts - Friday 13th, Saturday 14th

erson: Pacific Slope Natasha Barett: Hidden Values Jonty Harrison: BEASTiary Fernando Lopez-Lezcano: The Hidden and Mysterious Machinery of Sound Bill Schottstaedt: I'm Late ** -- next part -- ___ Events mailin

Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

On 10/15/2015 01:37 PM, Jörn Nettingsmeier wrote: On 10/15/2015 10:07 PM, Steven Boardman wrote: Subs are a must. The more you have, the more even the response around the room? Yes, and the better your LF localisation. Ideally, we'd want to do a separate decode for the subs, not just simple ba

Re: [Sursound] Advice on practicalities of 16-speaker half-spherical arrangement

On 02/09/2016 02:16 PM, Martin Dupras wrote: I have no objection to using fewer than 16 speakers; it's just the maximum I have available to me. I would use as many speakers as you can. No point in using less and there's always a way to arrange them to provide a "reasonable" coverage of the up

Re: [Sursound] Advice on practicalities of 16-speaker half-spherical arrangement

On 02/09/2016 03:07 PM, Martin Dupras wrote: Ah, but my objection is that those are proprietary systems, and I would much rather not use any. Part of the appeal of Ambisonics for me is that it's freely usable by all and no licensing is necessary. Yup, same here. That's actually really very im

Re: [Sursound] Ambisonic Decoder Design Resources

On 02/20/2016 09:58 AM, Jörn Nettingsmeier wrote: On 02/20/2016 06:22 PM, Richard Graham wrote: Hi Archontis, ... Most importantly, I’d like to figure out how to calculate these coefficients myself and I am having trouble finding literature on how to do that. I have reached out to a few folks

[Sursound] leftover xmas ornaments?

Hi all, I've been working on this project since November 2015, and at the time I thought I would be done by Christmas, hence the subject line... (I was very naive). The main motivation of the project was to have easy to build and cheap microphone arrays for my students to use in class (@ CCRM

Re: [Sursound] leftover xmas ornaments?

986> for Windows 10 *From: *Fernando Lopez-Lezcano <mailto:na...@ccrma.stanford.edu> *Sent: *Thursday, September 15, 2016 1:25 AM *To: *Surround Sound discussion group <mailto:sursound@music.vt.edu> *Subject: *[Sursound] leftover xmas ornaments? Hi all, I've been working on this

Re: [Sursound] leftover xmas ornaments?

On 09/17/2016 10:56 AM, Stefan Schreiber wrote: Fernando Lopez-Lezcano wrote: Hi all, I've been working on this project since November 2015, and at the time I thought I would be done by Christmas, hence the subject line... (I was very naive). The main motivation of the project was to

Re: [Sursound] leftover xmas ornaments?

drive it (I was doing the full design for a real one including the housing for the interface electronics two weeks ago)... See attached "picture" (the capsule assembly is pushed into the slots in the mount)... -- Fernando On 17 Sep 2016 19:56, "Stefan Schreiber" wrote:

Re: [Sursound] [allowed] brahma

On 01/02/2017 09:59 PM, Bo-Erik Sandholm wrote: Good luck in your continued effekt. By the way, i have accuired one of your Tetra mic 3d shapeway for 14 mm capsules. I have not yet assembler it. I Wonder is there any software package and description on How to create calibration files for The mic

Re: [Sursound] [allowed] brahma

l.com>: Dear fernando I forwarded your link to marc Lavallée when you first posted them. My intent is that we should have multiple compatible systems for calibrating A format mics Sent from my Windows 10 phone From: Fernando Lopez-Lezcano<mailto:na...@ccrma.stanford.edu> Sen

Re: [Sursound] Core Sound Announces OctoMic - First 2nd-orderAmbisonics Microphone

On 03/27/2018 12:58 PM, Eric Benjamin wrote: I’d like to point out that I am the inventor of the second order microphone array called by Core-Sound the Octomic. I published the design six years ago at the 133rd AES Convention in preprint 8728. I purposefully did not patent the invention to all

Re: [Sursound] Core Sound Announces OctoMic - First 2nd-order Ambisonics Microphone

On 03/27/2018 01:18 PM, Fons Adriaensen wrote: On Tue, Mar 27, 2018 at 09:08:54PM +0200, Jörn Nettingsmeier wrote: Sweet! A resounding "me too" to Stefan's question about the matrix, since you're one channel short :) Looking at the geometry, I guess you sacrificed the second-order rotationally

Re: [Sursound] Core Sound Announces OctoMic - First 2nd-orderAmbisonics Microphone

On 03/28/2018 04:23 AM, Len Moskowitz wrote: Stefan Schreiber wrote: At first sight I could not tell anything about the difference between an OctaThingy and Octomic capsule mount. Even not at second... Could you give me/us some hint? Eric's OctaThingy is based on a tetragonal trapezohedr

Re: [Sursound] Core Sound Announces OctoMic - First 2nd-order Ambisonics Microphone

On 03/27/2018 01:18 PM, Fons Adriaensen wrote: On Tue, Mar 27, 2018 at 09:08:54PM +0200, Jörn Nettingsmeier wrote: Sweet! A resounding "me too" to Stefan's question about the matrix, since you're one channel short :) Looking at the geometry, I guess you sacrificed the second-order rotationally

Re: [Sursound] ***UNCHECKED*** Zoom H2N - thoughts?

On 04/09/2018 01:49 PM, Augustine Leudar wrote: My guess would be the AD converters are not great - DA converters are generally flat as a pankake these days but AD converters are not always on cheaper stuff. I tried it with various different microphones and was never happy - several other sI know

Re: [Sursound] Zoom H2N - thoughts? (octa)

I did not notice the recorded levels were too low, stuff that happens when you are in a hurry... -- Fernando On 10 April 2018 at 06:37, Fernando Lopez-Lezcano < na...@ccrma.stanford.edu> wrote: On 04/09/2018 01:49 PM, Augustine Leudar wrote: My guess would be the AD converters ar

Re: [Sursound] Zoom H2N - thoughts? (octa)

On 04/10/2018 12:17 PM, Fons Adriaensen wrote: On Tue, Apr 10, 2018 at 10:13:17AM -0700, Fernando Lopez-Lezcano wrote: I actually should go back to my original approach (more complicated) for 1st order, which was to derive a 4x4 matrix of filters (which would be 8x8 for the 2nd order mic

Re: [Sursound] Rode Soundfield NT-SF1

On 04/12/2018 03:33 PM, Jack Reynolds wrote: So is a larger radius A-Format mic not a problem then? I always thought the radius dictated the upper frequency limit for spatial aliasing. The radius defines the frequency at which the array stops behaving like a coincident array. Above that frequ

Re: [Sursound] Rode Soundfield NT-SF1

On 04/13/2018 10:23 AM, Jack Reynolds wrote: That’s what I thought. I have also heard that a radius smaller than 15mm or so has detrimental effects on the low end The is probably related to the size of the capsules. As you bring the radius down you have to use smaller capsules and the low fre

Re: [Sursound] RIR measuring, how to capture a higher order Ambisonic room responce?

On 04/23/2018 04:24 AM, jack reynolds wrote: The new coresound octomic is based on two tetramics, with one rotated 45 degrees from the other, Hmm, does not look like that to me. If you, for example, take any two opposite capsules in the upper ring as part of one tetrahedral microphone, there

Re: [Sursound] RIR measuring, how to capture a higher order Ambisonic room responce?

On 04/23/2018 12:42 PM, Stefan Schreiber wrote: I can do the 4 measurements with 45 degrees rotation of my tetramic, that is not so difficult, the next step to create a second order ambisonic RIR that is where I will fail :-). You would need to "calibrate" the created 8 capsule array. That is

Re: [Sursound] RIR measuring, how to capture a higher order Ambisonic room responce?

On 04/23/2018 03:19 PM, Fons Adriaensen wrote: On Mon, Apr 23, 2018 at 01:10:56PM -0700, Fernando Lopez-Lezcano wrote: In my case to get good calibration data I need to rotate the microphone with no wobble and at different orientations (or if it is not _exactly_ perfect, try to get away with

Re: [Sursound] RIR measuring, how to capture a higher order Ambisonic room responce?

On 04/29/2018 06:13 AM, Dave Malham wrote: Excellent - this is exactly the method I was about to suggest - steppers, related hardware and motor control boards have been driven down in price so much by the 3-d printing/cnc/maker revolution that it makes almost no sense to do anything else. Yes,

Re: [Sursound] RIR measuring, how to capture a higher order Ambisonic room responce?

On 05/08/2018 01:11 PM, Fons Adriaensen wrote: On Mon, May 07, 2018 at 07:05:37PM -0700, Fernando Lopez-Lezcano wrote: So I bought a robotic arm. Len (from Core Sound) asked off-list about it, so I'm including some information here. I got the WidowXL from Trossen Robotics. Anything bette

Re: [Sursound] RIR measuring, how to capture a higher order Ambisonic room responce?

On 05/07/2018 07:05 PM, Fernando Lopez-Lezcano wrote: ... So I bought a robotic arm. Len (from Core Sound) asked off-list about it, so I'm including some information here. I got the WidowXL from Trossen Robotics. Anything better (as far as I could find, not an expert!) would have drive

Re: [Sursound] Looking for mic advice (Zylia)

On 08/16/2018 10:22 AM, Bo-Erik Sandholm wrote: I agree with Len, we have not seen any technical spec of self noise level of the MEMS (clusters?) that are used in Zylia. Only text saying that in normal musical recording situations self noise is not disturbing :-). :-) I have a personal theo

Re: [Sursound] Zoom H3-VR

On 09/15/2018 08:12 AM, hacklava wrote: On Sat, 15 Sep 2018 14:52:03 +0100 Chris Woolf wrote: How open these sort of products can be in terms of internal architecture and calibration is another (commercial) problem. Ah, yes, calibration. I imagine that the H3V is not individually calibrated

Re: [Sursound] Zoom H3-VR

On 09/15/2018 05:59 AM, Marc Lavallée wrote: Le 15/09/2018 à 06:19, Eero Aro a écrit : David Pickett wrote: This is a welcome price, but unfortunately, for that kind of money you dont get any numerical specifications, graphs, or guarantee of capsule matching, repeatability or variance between

Re: [Sursound] Looking for mic advice

On 10/02/2018 07:03 PM, Len Moskowitz wrote: Jonathan Kawchuk wrote: Has anyone checked out the Nevaton VR microphone ? Incredibly low self-noise if you are looking to do nature recording. Curious what the spatial resolution will be like and what calibration looks like. We heard on the Facebo

Re: [Sursound] Re : Zoom H3-VR anyone?

On 11/20/2018 03:10 PM, David Pickett wrote: At 23:27 20-11-18, Ralf R Radermacher wrote: I'm wondering if maybe the internal conversion applies some kind of mic calibration data but of course we'll never know. ... unless someone does the experiment of comparing the internal conversion with a

Re: [Sursound] 2nd order A-format to B-format equations

On 3/26/19 2:59 PM, Martin Dupras wrote: Thank you for all the answers. I do appreciate. However, no one has answered my question. I will ask again. Can someone point me to any published resources that explain the principles and theoretical equations required to in theory convert from 2nd order

Re: [Sursound] Decoding first order ambisonics on higher order decoders?

On 5/14/19 6:56 PM, Aaron Heller wrote: Hi Sean, The problem with feeding first-order program material into a third-order decoder is that the per-degree max_rE gains will be wrong. For 2D: 1, 0.707 vs. 1, 0.924 (, 0.707, 0.383) For 3D: 1, 0.577 vs. 1, 0.861 (, 0.612, 0.305) Maybe you

Re: [Sursound] preferred (small) linux distro for audio?

On 07/04/2012 03:41 AM, Dave Malham wrote: Hi folks, I'm looking for recommendations on a preferred (small) Linux distro for surround work. To start with, I'd like to run on a Asus 35 M1-M Pro motherboard as I have one handy. Unfortunately, my current Ubuntu distro seems to have difficulties pick

Re: [Sursound] preferred (small) linux distro for audio?

On 07/04/2012 01:44 PM, Marc Lavallée wrote: [MUNCH]... But I much prefer Debian based distributions (like Ubuntu) for their APT packaging system (instead of RPM on Fedora based distributions). Caveat (apt != rpm): underlying package system: .deb packages in Debian, .rpm packages in Fedora dep

Re: [Sursound] preferred (small) linux distro for audio?

d snd. The back channels would slowly drift with respect to the front channels, of course, but if the piece was not too long and the buffers were not too small there would be no glitches... 12 minute quad piece? no problem! :-) -- Fernando Fernando Lopez-Lezcano a écrit : On 07/04/2012

Re: [Sursound] preferred (small) linux distro for audio?

On 07/04/2012 04:28 PM, Marc Lavallée wrote: Here's a few benchmarks to compare YUM with APT: http://www.linux-mag.com/id/7382/ BTW, thanks for the link! -- Fernando ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/lis

Re: [Sursound] preferred (small) linux distro for audio?

On 07/04/2012 06:40 PM, Marc Lavallée wrote: Fernando Lopez-Lezcano a écrit : Yum has gotten much faster recently, but I have no idea how it compares with apt today. IMHO it is as easy to use as apt (ie: it is functionally equivalent), but it may be slow (perhaps to the point of being

Re: [Sursound] List of open source software for wavefield synthesis

On 07/05/2012 07:59 AM, Augustine Leudar wrote: Hello all, I am currently making a WFS setup and would like to check out what software is available (windows,mac or linux) . Could we compile a list of software (preferably open source) avialable for wavefield synthesis on this thread, The SoundSc

Re: [Sursound] Anyone had experience with AllRAD decoding to physical loudspeakers?

On 5/31/19 10:25 AM, Sean Devonport wrote: Hey everyone! Hope all are doing well. ... So far, I've managed to get a decent spatial impression, however, I've been running to this issue where the top speakers seem to emitting too high volumes. I've tested against the SPARTA

Re: [Sursound] Speaker array advice

On 6/3/19 5:59 AM, Augustine Leudar wrote: I guess you could have 12 first ring, 8 second, 4 third and one eye of god. We localise worse directly ove rour heads anyway so to many speakers at the very top are a biut of a waste. Exactly the suggestion I was about to make... We do concerts with t

Re: [Sursound] Anyone had experience with AllRAD decoding to physical loudspeakers?

On 6/3/19 9:30 AM, Sean Devonport wrote: ... I will also look into DRC and see how I can get that to work within our setup. This is what got me started: https://ccrma.stanford.edu/workshops/gaffta2010/spatialsound/topics/ambisonics/materials/2008_nettingsmeier__ambi_at_home.pdf https://stacki

Re: [Sursound] Anyone had experience with AllRAD decoding to physical loudspeakers?

On 6/4/19 2:48 AM, Sean Devonport wrote: ... Reading that paper, the AmbiHome system, I notice it speaks about the two different sets of decoding coefficients for a dual band decoding with crossover point at 700Hz roughly, in order to maximise the velocity or energy for phase and loudness respect

Re: [Sursound] practical HOA encoding (Richard Lee)

On 6/13/19 11:03 AM, Dave Hunt wrote: Hi, I enjoyed your comments. I have pondered long and hard about this. On 12 Jun 2019, at 17:00, sursound-requ...@music.vt.edu wrote: 1. practical HOA encoding (Richard Lee) From: Richard Lee Subject: [Sursound] practical HOA encoding ... What HOA d

Re: [Sursound] Tetracal - calibrating A->B conversion for Røde NT-SF1 mic?

On 6/5/19 1:46 AM, anders.vin...@bek.no wrote: [Obviously addressed to Fons A., but presumably of interest to the rest here] I'd be interested to check the tetracal software to set up filters and gains for use in A-B conversion of the signal from a Røde NT-SF1 mic we have here. I can't find Tet

Re: [Sursound] Pan Law Irregular Speaker Array

On 8/18/19 4:26 AM, Augustine Leudar wrote: also you could use rew to eq each individual speaker. For eq'ing speakers I use DRC (Digital Room Correction), it is free software. Once you have measured impulse responses it will create filters that eq the speakers, tons of parameters to tweak if

Re: [Sursound] Analogue 3D / surround sound panners?

On 2/15/20 5:15 AM, Augustine Leudar wrote: Hi Marc I mean completely analogue. I use things like the leap or wii for digital. I mean if you didn't want to use any software at all. You need to get one of these: https://en.wikipedia.org/wiki/Azimuth_Co-ordinator :-) -- Fernando https://www.nept

Re: [Sursound] Analogue 3D / surround sound panners?

t/vep/reconstruction.html http://www.music.mcgill.ca/~ich/research/misc/papers/cr1251.pdf (apparently paper tapes - 4 channels? - were routing audio to clusters or individual speakers, as a many as 350 speakers were affixed to the walls, amazing...) -- Fernando On Sat, Feb 15, 2020, 1:04 PM Fernando

Re: [Sursound] OctaThingy .stl Files

On 3/19/20 2:09 PM, John Leonard Main wrote: Hello chaps, Hi, (sorry, just now I get a minute to follow up on this) As all my work has now been cancelled, thanks to Covid-19, I have time on my hands and a new 3D printer to play with. I’d like to experiment with building a couple of the SpHE

Re: [Sursound] Binaural rendering of an Eigenmike recording

On 5/21/20 9:03 AM, Jens Ahrens wrote: Hello everyone, Hi Jens, … and another post from me. Here’s a quick 2-min video of what binaural rendering of an Eigenmike recording can sound like for those of you who haven’t heard this before: https://youtu.be/qcqeygqjxZ4 It’s 4th order rendered di

Re: [Sursound] Recorder for ORTF-3D OUTDOOR SET

< nothing below implies that an Ambisonics microphone is the best solution for all sound capture cases! > On 10/21/20 6:37 AM, Augustine Leudar wrote: Hi Steve, An interesting proposal. You'll excuse perhaps my misunderstanding here, but my understanding was that ambisonics A format consists of

Re: [Sursound] A 7th-order array with 16 microphones

On 12/1/21 12:35 PM, Jens Ahrens wrote: Hi Fons, I’m attaching Fig. 1 from the JASA article. Please refer to the article itself if the image does not get through. It compares the SMA radial filters with the EMA radial filters. Whenever the solid lines deviate from dashed ones of the same colo

Re: [Sursound] A 7th-order array with 16 microphones

On 12/7/21 2:15 PM, Sampo Syreeni wrote: On 2021-12-02, eric benjamin wrote: I believe that Nando may have been thinking about reproduction with loudspeaker arrays. He has a system with eight loudspeakers on the horizontal plane, as do I. So good up to third order. And I actually have access

Re: [Sursound] the facebook group

On 1/2/22 1:13 AM, Fons Adriaensen wrote: On Sun, Jan 02, 2022 at 06:19:03AM +0200, Sampo Syreeni wrote: Hi. How about if you all also join the Facebook-group, corresponding to this one? Because it'd be nice as always... ;) So you suggest to support a platform I agree, I do not see a reason

Re: [Sursound] Which microphone system to choose?

On 8/9/22 1:57 AM, Fons Adriaensen wrote: On Mon, Aug 08, 2022 at 09:54:25PM +, Thorsten Michels wrote: My first idea was to use my native Ambix-B-format microphone setup. This would give me the greatest flexibility, right? Not really. Higher order AMB will give you much better results. T

Re: [Sursound] Which microphone system to choose?

On 8/10/22 1:50 AM, Fons Adriaensen wrote: On Tue, Aug 09, 2022 at 12:30:25PM -0700, Fernando Lopez-Lezcano wrote: Any graphs of the performance in elevation != 0? Ie: plots, of, say, "T" at different frequencies? I'm really curious... For the EM and the Zylia I u

Re: [Sursound] [off-topic] Spirals

On 3/7/23 3:08 PM, Panos Kouvelis wrote: I recently subscribed to this mailing list for insightful discussions on surround sound. Up 'till now, the material I have received is about aviation. Am I in the wrong place? Hi Panos, you are in the right place, please stay, there will be eventually