[Sursound] ffmpeg 7.0 and Ambisonic how to use ?

with 10 and 12 channels AAC. I have done it with Opus but it is not supported on all common platforms. Is there any ffmpeg guru out there who can help? BR Bo-Erik Sandholm Stockholm Https://www.ohti.xyz -- next part -- An HTML attachment was scrubbed... URL: <ht

Re: [Sursound] [Proposal] for HOA web-streaming-format

If interested you can take quick look at what can be done with a modified version of omnitone for playback in a browser with different encodings. Headtracking is possible. The decoder setup for each file decoding is controlled by a json file. I apologize in advance for the left right error ( to b

Re: [Sursound] FLAC and max number of channels

We use webaudio api and a modified omnitone. We use up to third order and can play wav, aac-lc and opus on most platforms. We have thought to use multitrack mp4/m4a with 2 × 8 channels with libfdk heAAC which is the best available AAC-He codec for private persons , but it also have a 8 channel lim

[Sursound] FLAC and max number of channels

Can someone comment on the double message i think i find in the spec? There is a the specification of max number of channels in stream info chapter 8.2 u(3) | (number of channels)-1. FLAC supports from 1 to | || 8 channels. In chapter 8.6.2 A WAVEFORMATEXTENSIBLE_CHANNEL_MASK

Re: [Sursound] So long CIPIC HRTF?

The problem for us with ambisonics is in most cases we do not have any visual reference to confirm or adjust the acoustic cues to any reference. There exists papers showing that the we humans locks in to visual cues and our experience and allows vision to win. Bo-Erik Den lör 31 dec. 2022 1

Re: [Sursound] So long CIPIC HRTF? (Joseph Anderson)

As a amateur I had a idea that I could use a CIPIC HRTF but I did not find an easy way to select one that had any chance to be a a good fit for me. In my naivity I hoped for at least skull diameter and som pictures of ear shape. But maybe it is much harder than that. Bo-Erik / Bosse On Sun, 25

Re: [Sursound] about principled rendering of ambisonic to binaural

Hi Lorenzo I have FOA recordings of sweeps from a very good listening room that i want to use as a virtual binaural listening room for commersial music. I have responses for stereo, virtual center and back channels for 5.1 Is it possible to use your VSTs for such a setup? Any tips on how to do it

Re: [Sursound] Which microphone system to choose?

Try to borrow a Zylia ZM-1 or any other higher order ambisonic mic, this gives you third order b-format. Converting to other formats works better than first order. When I feel comitted to be sure and get it right I record tetracycline foa and spaced omnis on a 6 track tascam dr-680 recorder and a

Re: [Sursound] Ambisonics with AirPods head tracking

As long as you can get the headphones directions via OSC you can use it to control a webpage with a ambisonic played decoder and rotation via osc. In worst case you could need a osc to osc plugin to parse the syntax. ww.ohti.xyz has a osc controlled player for local or web based ambisonic files.

Re: [Sursound] the facebook group

Search functions in facebook groups is useless, at least in my opinion. I have great problems to find info that I remember having seen earlier on facebook. Discussion forums are much better if they they have a good search function. Bo-Erik On Sun, 2 Jan 2022, 15:46 Marc Lavallée, wrote: > A s

Re: [Sursound] Matroska (was: ALAC (was Re: WavPack (was: Re: Ambix files)))

SN3D against N3D As I am a naive user and do not remember all intricate details of Ambisonics file formats I recently made the mistake to increase the gain for a recording when converting from 24 bit floats to 16 bit samples to minimize file size for web distribution. This made for a bad exper

Re: [Sursound] WavPack (was: Re: Ambix files)

That was a lot of information, I was only thinking of distribution to end-users on the web. It would save a bit of volume in comparison to wav. This is the current state of ohti, We are to add more buttons for routing of mixed order Ambisonics, the channel routing can be edited before playback.

Re: [Sursound] WavPack (was: Re: Ambix files)

https://hydrogenaud.io/index.php?topic=119143.0 Quick google gives me a the impression it could be made to work on many platforms. It is better than flac for Ambisonics due to the 8 channel limit in flac. Bosse Den sön 23 maj 2021 00:16Marc Lavallée skrev: > Le 21-05-22 à 06 h 21, Fons Adriaen

Re: [Sursound] Suitable headphones for monitoring binaural (Gernot von Schultzendorff)

Good loudspeakers for stereo do not have the same response curve as a monospeaker, as the sum of the 2 stereo speakers need to produce the stereo image that should have a linear psycho acoustic frequency response. Den tor 25 juni 2020 11:34Augustine Leudar skrev: > That's nice to hear seeing as

Re: [Sursound] Release of the Spatial_Audio_Framework

The webpage is unreadable in chrome on Android, have to read it later on a computer😁 Bo-Erik Den ons 27 maj 2020 13:59McCormack Leo skrev: > Dear Sursounders, > > I am happy to announce the first official release of the > Spatial_Audio_Framework! > > The framework is written in C, (with cross-pl

Re: [Sursound] analog planner

The Question is it the feel of the controller or no computer involved most important? Create a controller or reuse an old one. Connect an imu to a mechanical controller of our choice :-) ohti https://github.com/bossesand/OHTI can be a starting point. Bno055 as imu. Using Arduino nano v3 gives

Re: [Sursound] Ambisonic Audio - Interactive Installation

The ohti Projects for a open headtracker has been slow but will hopefully be updated soon. It is only for so called 9 degrees of freedom, no position data only directional info with 2 degrees precision. Data is currently quaternions over serial communication to control the omnitone binaural decode

Re: [Sursound] Ambisonic Audio - Interactive Installation

https://proximi.io/accurate-indoor-positioning-bluetooth-beacons/ Principles and solution för ble localization. Den sön 29 sep. 2019 16:37Marc Lavallée skrev: > Hi Michelle, > > A master computer could remotely control portable computers (probably > phones) to render the sounds using either a c

Re: [Sursound] Pan Law Irregular Speaker Array

I suspect that for a slow moving person among stationary sound subjects, you really have to have perfect pitch to notice the pitch change. If you have high speed moving objects like cars or trains... the listener probably can be considered standing still in comparison to the object. Dependant on w

Re: [Sursound] Software Oscillator

http://tolvan.com/ Look at Tone A simple Tone generator with a few Good features, also other Good Free audio program. Den tor 22 aug. 2019 22:42Jack Reynolds skrev: > Or REW is always a good one. > > https://www.roomeqwizard.com/ > > Sent from my iPhone > > > On 22 Aug 2019, at 21:27, Bill de Ga

Re: [Sursound] Zoom H3-VR: new Facebook users' group

A real forum is better than facebook to follow subjects also to search in and find previous discussions. At least in my opinion. I personally find it hard to go back/search and find previous seen messages in the ambisonics sound related facebook groups. I think facebook is most suitable for ins

Re: [Sursound] Ambisonic Hand Controller

As long as the hosting server is a local host websocket server chrome can open a connection to the server. At least the version available a month ago. Den fre 2 aug. 2019 10:28Richard Foss skrev: > Hi Justin, > > I have described the use of a mobile device controller in the following > paper th

Re: [Sursound] practical HOA encoding

Sadly, l expect the majority of the spherical video crowd not to notice anything wrong. Natural ambience recordings are so rare in todays sound landscape that they probably think it sounds as it should. Bo-Erik Den lör 15 juni 2019 00:07Len Moskowitz skrev: > The incredibly wise Richard Lee wr

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

Could it be TLS encryption? not working? Den ons 5 juni 2019 kl 14:09 skrev David Pickett : > Here is what I got. This one comes from Norway. I > have had others recently from France. > > D > > >Delivered-To: d...@fugato.com > >Received: from river.yodns.com > > by river.yodns.com with L

Re: [Sursound] Speaker array advice

What about a listening platform so your head height is at 2.5 meter. Then 3 rings with 8 12 8 speakers? And the middle ring at 2,5 meter? Couldn't be a closer to a ideal? Den mån 3 juni 2019 15:00Augustine Leudar skrev: > I guess you could have 12 first ring, 8 second, 4 third and one eye

[Sursound] Ready to buy ... Li-Fi for outdoor data communications

https://www.ledsmagazine.com/leds-ssl-design/article/16701732/forget-lighting-this-lifi-is-for-outdoor-data-communications-only -- next part -- An HTML attachment was scrubbed... URL:

Re: [Sursound] Deconstructing soundbar marketing B.S.

https://www.researchgate.net/profile/Hyunchae_Chun/publication/259889506_A_3-Gbs_single-LED_OFDM-based_wireless_VLC_link_using_a_gallium_nitride_m_LED/links/577cd2f708ae355e74f2b06d/A-3-Gb-s-single-LED-OFDM-based-wireless-VLC-link-using-a-gallium-nitride-m-LED.pdf 3 Gb/s on common led... I Don't g

Re: [Sursound] Deconstructing soundbar marketing B.S.

Optical digital bandwidth using LED as a transmitter is without problem 1+ Mbit/s. Different designs have differet limits. B Den lör 1 juni 2019 13:49David Pickett skrev: > At 11:14 01-06-19, Chris Woolf wrote: > > >While line-of-sight is a limitation I have been impressed by how > >well confe

Re: [Sursound] Deconstructing soundbar marketing B.S.

https://fmarques.org/ronja-diy-optical-data/ If you want to diy instead of buying, seems like a complete design. Optical distribution of data/digital sound. Den fre 31 maj 2019 21:22Bo-Erik Sandholm skrev: > Line of sight is necessary, but there is no bandwidth issues. > 10 years ago I built

Re: [Sursound] Deconstructing soundbar marketing B.S.

Line of sight is necessary, but there is no bandwidth issues. 10 years ago I built a simple IR link kit for 16bit 44.1 kHz. Den fre 31 maj 2019 15:30Chris Woolf skrev: > > On 28/05/2019 13:34, David Pickett wrote: > > ... > > I tell myself that it should not be too difficult to make decent >

Re: [Sursound] wifi audio (was Re: Deconstructing soundbar marketing B.S.)

Distribution to speakers using UDP multicast of a multichannel stream could possibly make the only time difference between channels be eventual receiver buffering. Just speculation... Bo-Erik Den ons 29 maj 2019 22:32Paul Hodges skrev: > --On 29 May 2019 19:53 + "mgraves mstvp.com" > wrot

Re: [Sursound] Deconstructing soundbar marketing B.S.

https://www.researchgate.net/publication/301482315_Improving_Indoor_Localization_Using_Bluetooth_Low_Energy_Beacons This is from 2016 , I belive there have been progress since then... So we can get localisation info, next step ? Bo-Erik Den tis 28 maj 2019 kl 10:56 skrev Richard Dobson : > > >

Re: [Sursound] Deconstructing soundbar marketing B.S.

The Speakers won't be wireless as you probably want them to be powered. But it should be easy with bluetooth 4.0 or Wi-Fi direct to create a solution. Normal Wi-Fi could be used. The low cost esp8266 makes this possible in a diy setup... Stream a 4 channel audiostream to the 4 speakers. Have a s

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

Which decoder configuration for FOA and TOA in to binaural is the best? Any references? Bo-Erik Den ons 15 maj 2019 07:20Fernando Lopez-Lezcano skrev: > 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

Re: [Sursound] Waves NX5

I have bought the waves head tracker and software, I am unable to install the software on my most powerful pc, support was not helpful. The headtracker protocol is secret so headtracker is useless for other software. So I have not used it... Not recommended 😎 Bosse On Wed, 16 Jan 2019 19:09 E

Re: [Sursound] Publishing music in ambisonics

n file type > > The question remains: how to convert amb files to ambix files with the > required metatada for VLC3? > > Marc > > > - - - > > > > Citando Politis Archontis : > > > >>> On 13 Jan 2019, at 22:08, Bo-Erik Sandholm > wrote: > >

Re: [Sursound] Publishing music in ambisonics

Angelo Farina has created a metadata "injector" to make ambisonic work in VLC. I think he described it it a posting in the ambisonic 360 VR audio facebook group Bo Den sön 13 jan. 2019 19:27 skrev Politis Archontis < archontis.poli...@aalto.fi>: > Hi Marc, > > I believe it expects the “spatial

Re: [Sursound] Publishing music in ambisonics

https://developer.mozilla.org/en-US/docs/Web/API/AudioDestinationNode Destination channel numbers can be as many as soundcard outputs ! So yes there is nothing stopping us from having multichannel outputs from a web audio implemented in JavaScript.. Bosse On Sun, 13 Jan 2019 09:58 Bo-Erik

Re: [Sursound] Publishing music in ambisonics

As far as I understand there is nothing stopping us to access a multichannel soundcard from the browser. To Marc, there is nothing else than the html competence and time that stops us from using Omnitone or JSAmbisonics to produce websites with Ambisonic content. I think with the www.ohti.xyz, th

Re: [Sursound] Publishing music in ambisonics

These are links to the videos I have taken the sounds simple from, Angelo Farina has published many videos with TOA soundtracks. They are interested only in the jump-videos directory. http://www.angelofarina.it/Public/Jump-Videos/Corde-Vocali/Jump-3rd-order/ http://www.angelofarina.it/Public/Ju

Re: [Sursound] Publishing music in ambisonics

I improved my test / demo site www.ohti.xyz today. I added the demo for Omnitone SOA and TOA playback, with drag and drop an rotation, local file playback. It works in Chrome on my 3 year old Lenovo yoga tablet 2. The examples I have there is 16 channel 24 bit TOA encoded in opus. The server is

Re: [Sursound] Publishing music in ambisonics

https://m.facebook.com/groups/930534953740795?view=permalink&id=1822239041237044 In the above Facebook link, discussion there is links to ffmpeg binaries to use for aac encoding, also parameters needed for making 8 fullbandwidth encoded channels. Bevare of channel ordering, I guess the resulting

Re: [Sursound] Publishing music in ambisonics

Bo-Erik Sandholm The so Den tor 10 jan. 2019 22:45 skrev David Pickett : > At 21:47 10-01-19, Paul wrote: > > >I replace a stereo file with a four-channel file (why waste bandwidth > >on empty channels?). > > I agree. But it seems that the only way I have of making aa

Re: [Sursound] Passive small speaker advice

Second hand KEF eggs, It should be possible to get sets of 5 for around 100 - 200 pounds. Search for KEF egg speakers on eBay.co.uk Bosse On Wed, 9 Jan 2019 20:41 Bruce Wiggins ..just looked at the price of the Genelec Ones...definitely > wouldn't be able to get many of them! ;-) > > KE

Re: [Sursound] Multi-user head tracked binaural ambisonics query

https://rawgit.com/GoogleChrome/omnitone/exp-opus-multichannel/examples/hoa-player.html you can use this experimental player to test if local HOA AmbiX files can be played on a RPi3 ! If it works, the OHTI headtracker should also work. Bo-Erik Den tors 1 nov. 2018 kl 20:57 skrev Bo-Erik Sandholm

Re: [Sursound] Multi-user head tracked binaural ambisonics query

Our OHTI should work on a RPi 3, I think very little additional work is needed on our project to get/verify streaming to work. Hope you can work with us, we want our project to be fully open. Bo-Erik On Thu, 1 Nov 2018 20:11 Jörn Nettingsmeier, wrote: > On 11/1/18 11:04 AM, Simon Connor wrote:

Re: [Sursound] Multi-user head tracked binaural ambisonics query

The project on https://github.com/bossesand/OHTI with headtracker HW + SW might be of interest. The Host application is running in a browser, and can play FOA or HOA files from the local file system or from the local webserver server on the device. I will upload a newer software version today or

Re: [Sursound] Any Second and Third order Demo files available ?

ww.mhacoustics.com/download > > > > It's a bit tedious, but it should work. > > > > Marc > > > > Le 26/09/2018 à 17:09, Bo-Erik Sandholm a écrit : > >> Almost everybody is talking about using second or third order > Ambisonics. > >> &g

Re: [Sursound] Any Second and Third order Demo files available ?

io > software: https://www.mhacoustics.com/download > > > > It's a bit tedious, but it should work. > > > > Marc > > > > Le 26/09/2018 à 17:09, Bo-Erik Sandholm a écrit : > >> Almost everybody is talking about using second or third order >

[Sursound] Any Second and Third order Demo files available ?

Almost everybody is talking about using second or third order Ambisonics. Is there any Audio only files available to test a headtracking higher order binaural player? I have the octomic examples Best Regards Bo-Erik -- next part -- An HTML attachment was scrubbed... URL:

Re: [Sursound] Zoom H3-VR

Not to be a sour puss, but doing open source stuff and not updating the documention is something a lot of us are guilty off... This is a really a sad state off affairs, and many man hours can be saved of we guilty ones made the effort :-) In some cases the code is updated but you can only find in

Re: [Sursound] MEMS SNR Specifications

My last comment on MEMS performance. One piece price from Mouser 1.80 Euro. Complete data sheet here with graphs... https://www.mouser.se/ProductDetail/Infineon/IM69D130V01XTSA1/?qs=%2fha2pyFaduj4xwaVFOJc2igDZAeL7qWZE4cyVm2vU0DkFu5Rl9gaWnMlZsUg39Pw&utm_source=octopart&utm_medium=aggregator&utm_c

Re: [Sursound] MEMS SNR Specifications

According to the document linked to below that relates self noise values to real world applications 110 SNR cannot be related to the commonly used reference sound level. 110 dBA SNR would be 16 dB below absolute quiet. If the value 70dBA that I found for the infineon dual membrane MEMS mic is rela

Re: [Sursound] Sursound Digest, Vol 121, Issue 11

terested in a PRO version of the Zylia > > ZM-1 microphone, especially since even the current version seems to be > > (quite? very?) nice. According to various personal reports > > > > Best regards > > > > Stefan > > > > - - - - > > > >

Re: [Sursound] Sursound Digest, Vol 121, Issue 11

. Only coherent noise within the take up volume of the virtual microphone is relevant in that directional microphones response. But I am can be totally wrong in this mental visualization of the decoding process. I have not done any mathematical research of this... Bo-Erik Sandholm Stockholm 2018-08-16

Re: [Sursound] Jack, binaural and surround sound

The software playing the Soundfile needs to be able to play and process more than 2 channels, at a minimum four. The soundcard only need 2 channels for the resulting binaural sound. Best regards Bo-Erik On Sun, 12 Aug 2018 23:39 Bearcat M. Şándor, wrote: > Since I listen through the headphone

Re: [Sursound] Looking for mic advice

I have "test" a recording of birds in a Nordic summer night. Recorded with core-sound tetra mic using Tascam dr680 Bo-Erik On Fri, 10 Aug 2018 20:37 Søren Bendixen, wrote: > Hi > I´m in the same situation, want to record nature (and other things) in > ambisonics. and I have no experience - and

Re: [Sursound] Open HeadTracking Initiative OHTI - Release announcement

the F52832 BT/SoC > and the BNO055 IMU). I would like to also look into designing a 3D > printable enclosure for it. > > Cheers! > > Hector > On Fri, May 18, 2018 at 8:56 AM Bo-Erik Sandholm > wrote: > > > I want to present OHTI, a combination of open Software

Re: [Sursound] Open HeadTracking Initiative OHTI - Release announcement

recommend (both for the F52832 BT/SoC > and the BNO055 IMU). I would like to also look into designing a 3D > printable enclosure for it. > > Cheers! > > Hector > On Fri, May 18, 2018 at 8:56 AM Bo-Erik Sandholm > wrote: > > > I want to present OHTI, a combinat

[Sursound] Open HeadTracking Initiative OHTI - Release announcement

of course also appreciate any corrections or further assistance in development of this concept. Best Regards Open Headtracking Initiative for Audio (OHTI) Bo-Erik Sandholm, Stockholm Roger Sandholm, Stockholm Stefan Schreiber, Lisbon -- next part -- An HTML attachment

Re: [Sursound] Strange 'buzz' in Ambisonic recording

I suspect that depending of chosen virtual mic configuration there is so much low frequency gain added that you boost the level of the nearly always existing 50Hz hum so much that you actually hear it. It has sometimes happened to me that I need to lower the input level of the signal to the ambison

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

Thank you all, for your answers. I received a lot of information. I will start with FOA RIRs from my tetramic , it seems my ideas for measuring higher orders are not realistic without a higher order microphone. And FOA is probably good enough for my proof of concept. Best Regards Bo-Erik

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

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 :-). I will need a more detailed step by step instruction to reach my goal :-). Bo-Erik Stockholm On Mon, 23 Apr 2018 21:

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

gt; > so if you could work out how the second order >> B-format is extracted from the octomic array, you could potentially take >> an >> A-format reponse with your tetramic, rotate the mic 45 degrees and capture >> another, then process all eight channels? >>

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

ar on difference of multichannel mic techniques > (Hyunkook Lee has a cool setup and papers on them, and I was mostly > interested in DPA LCR omni vs coincident vs MS) > > We did many stage positions too. I can investigate if I can share the > files if that interests anyone. > >

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

combined to create the measurements that comes closer to a second order mic? I know the basics of using Audacity, and a audio sweep and creating a IR from this. Bo-Erik Sandholm Stockholm -- next part -- An HTML attachment was scrubbed... URL: <https://mail.music.vt.

Re: [Sursound] Mosca: GUI assisted ambisonics quark v0.2 for SuperCollider

e a simple way to send a output stream of bformat sound from SuperCollider to an external instance of the SOFA capable decoder written in JavaScript?? I currently have a personal SOFA file created for me by Antti Pulkki's company. Best Regards Bo-Erik Sandholm Stockholm, Sweden 2018-02-12

Re: [Sursound] Simple Software to Play a 6-channel WAV File (Windows)?

Wavosaur seems really neat as it has VST support, maybe to use on windows to listen to a b-format file and use a vst for decoding to binaural On 26 Oct 2017 03:43, "Augustine Leudar" wrote: > quicktime player does I hink > > On 25 October 2017 at 19:14, Eero Aro wrote: > > > Hi All > > > >

Re: [Sursound] How to find best fit of SOFA files from CIPRIC?

and OSX. Bo-Erik On 6 Oct 2017 15:38, "Antti Vanne" wrote: > Would you be interested trying out our mobile phone scanning, see e.g. > https://medium.com/@nahkiz/the-holy-grail-in-audio-and- > how-we-found-it-c3e55ccdf37a > > On Oct 6, 2017 16:26, "Bo-Erik Sandho

[Sursound] How to find best fit of SOFA files from CIPRIC?

I am looking for information on how to find the best fit from public/Free SOFA databases. I think one criteria could be the inter ear distance? How would I for example find the best fit in the CIPRIC SOFA database for my headwith. I do not really want to test all available SOFA files by listening

Re: [Sursound] Video + multichannel audio playback

Ambdec works via jack Den 14 sep. 2017 10:35 skrev "David Stalling" : > Thank you Marc and Jörn for your responses. Plenty of food for thought. I > needed a quick solution and what worked for me in the end with the > Raspberry Pi was VLC player (compiled with HW acceleration) connecting via > JAC

Re: [Sursound] Help: what am I doing wrong?

https://ambisonic.info/info/ricardo/decoder.html Good info compiled to refresh the basics for foa decoding On 7 Jul 2017 19:20, "Sampo Syreeni" wrote: > On 2017-07-06, Aaron Heller wrote: > > The decoders produced by my toolbox in FAUST (the ".dsp" files) have >> distance, level, and near-field

Re: [Sursound] Help: what am I doing wrong?

I remember a thread discussing decoding and listening tests from a number of years back. For foa and dual band decoding the best results was with not too many speakers in the array. My memory of the result and my interpretation of the discussion is that, 6 speakers in the horizontal ring and 4 s

Re: [Sursound] summary of everything (in the guise of a Sennheiser Ambeo mic critical/comparative review)

The comparison was discussed in the Facebook group Spatial Audio in VR/AR/MR Best regards Bo-Erik Sandholm On 26 Apr 2017 07:57, "Dave Malham" wrote: > Welcome back, mate, always a pleasure! > >Dave > > On 25 April 2017 at 23:00, David Worrall wrote: > > >

Re: [Sursound] The BBC & Quadrophony in 1973

f30 A pair PI-60 Cost around 3000 euro/Usd. The commercial version is The http://www.the-ear.net/review-hardware/guru-qm60-floorstanding-loudspeaker Bo-Erik Den 10 jan. 2017 10:47 skrev "Sampo Syreeni" : > On 2017-01-10, Bo-Erik Sandholm wrote: > > For UHJ I have experienced

Re: [Sursound] The BBC & Quadrophony in 1973

For UHJ I have experienced about +20 degrees outside of the speakers. But then my speakers are a bit unusual, they are phase linear, if I play back square waves I get recognisable square waves if using a small diameter Omni microphone :-) Bo-Erik On 9 Jan 2017 22:18, "Augustine Leudar" wrote: No

Re: [Sursound] The BBC & Quadrophony in 1973

I have head from guys at swedish radio that the Finland radio corporation have done a lot of Ambisonic recordings and still continued to do so. http://labs.plan8.se/ambisonics-webplayer/ Here is a FOA binaural Web based player that you can use in chrome on most platforms. If a number of things fal

Re: [Sursound] [allowed] brahma

; > I managed to get about 5 mSecs of useful data before the first reflection > > arrives. That seems to be enough. Completely agree with sealing the bass > > port if you have one like that, that's what Eric Benjamin recommended > doing. > > > > I'll p

Re: [Sursound] [allowed] brahma

o: Surround Sound discussion group<mailto:sursound@music.vt.edu>; > glard...@iol.ie<mailto:glard...@iol.ie> > Subject: Re: [Sursound] [allowed] brahma > > > > On 01/02/2017 09:59 PM, Bo-Erik Sandholm wrote: > > Good luck in your continued effekt. > > > &

Re: [Sursound] [allowed] brahma

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? I will probably have The possibility to get temp

Re: [Sursound] ZYLIA pre-order

To me it looks like its very nearly FOA Bformat that is recorded, not much more than 4 channels can be recorded if its going to be 1,2GB/H, the compression might give one or 2 channels more ?. Recording time: 1.2 GB / hour (ZYLIA lossless compression, 44.1 kHz, 16 bit), 0.2 GB / hour (OGG, 44.1 k

Re: [Sursound] leftover xmas ornaments?

Octathingy is probably 2 Tetra mics joined so we have Front Left Up, front left down, front right up, front right down Back Left Up, Back Left Down, Back Right Up, Back Right Down. I think it can be called a second order mic, i believe it was presented at aes a few years ago... It is designed by 2

Re: [Sursound] leftover xmas ornaments?

Please Umashankar, send the STL file to me, or the link to the file on mic builders. I am a member there but have not read actively for a time. Do you have a tip on how to do a simple selection of capsules for a tetrabuild. I have had 10 TSB140 capsules on my shelf for many years now, i even ord

Re: [Sursound] Sennheiser Ambeo + compare sound quality.

If you want to see in the form of graphs why the LP sounds better, you can try this software recording analyser. http://www.lts.a.se/lts/masvis It shows you in graphs how the recording engineer and mostly the mastering engineers have done their job. It's interesting to compare different releases

Re: [Sursound] b-format decoders

Why not just test the reaper daw in evaluation mode, just for playback of the bformat files. Ambisonic toolkit and other plugins work in reaper. Works on windows OSX and in a also non native in Linux. www.reaper.fm On 6 Sep 2016 20:09, "Joseph Anderson" wrote: > Hi Ross, > > While not usable

[Sursound] Merging impulse responces, is it workable?

bformat RIR in any way, if so how? Can the convolving be done in bformat after mixing to a single bformat file or should it be done for each before mixing to bformat? Should that be done with mono or bformat RIR. How many convoling instances would be best to use in a setup? Bo-Erik Sandholm

[Sursound] Conversion from FOA to TOA ? How to and why or not?

I am not convinced of the need for this when having only my own FOA recordings in my library but... As most of the discussions are about higher order tools the idea comes to mind, What is the simplest or best way to upscale FOA to FOA. Bo-Erik -- next part -- An HTML attach

Re: [Sursound] Small multichannel speakers setup

http://www.tonepublications.com/spotlight/world-premier-review-kef-x300a-powered-speakers/ This might be a powered alternative KEF version at lower cost :-) Connectivity is not great USB or 3.5 mm analog connection. Bo-Erik 2016-05-15 18:24 GMT+02:00 len moskowitz : > Probably the finest of th

Re: [Sursound] Small multichannel speakers setup

Secondhand hand Kef eggs from online auction sites is my source for speakers. Around 300 usd have given me 5 eggs som sometimes even included a sub. Bo-Erik Den 13 maj 2016 21:02 skrev "Eric Benjamin" : > This is all good stuff. I'd like to add some info about the system aspects. > > Speaker mou

Re: [Sursound] YouTube now supports Ambisonics (warning....part advertisement..)

Hi I suspect it could be possible to create a 360 video containing one cicular/ball panorama with FOA sound and play that via youtube? Is this possible? if so, which tools to use to create a video to upload. I have foa recordings of my own and panoramas from the recording. Bo-Erik -

Re: [Sursound] Storage - how do you do yours?

I have a freenas ZFS instance based on low-cost components and ecc memory and old 2 TB drives. http://www.newegg.com/Product/Product.aspx?Item=N82E16813132097 MB 38usd AMD Athlon 5350 2.05 GHz Quad core - 44usd Memory 2*8GB ECC RAM *http://www.newegg.com/Product/Product.aspx?Item=N82E168202

Re: [Sursound] Are mems a good choice for ambisonic microphones?

The equivalent noise for a single mems mic is 31 dba, the example using 16 mems would give an improvement of 12 dB getting to 19dBa which is equal to the Tetramic spec. i have had a idea that have never gone any where, that is to create a true b-format mic and using a number of "normal" mic caps

Re: [Sursound] Anyone know anything about this?

Multi direction binaurals?s? http://recordinghacks.com/microphones/T-H-E-Audio/BS-3D Or beamforming ? http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=5346535&url=http%3A%2F%2Fieeexplore.ieee.org%2Fxpls%2Fabs_all.jsp%3Farnumber%3D5346535 http://www.mhacoustics.com/products Bo-Erik On 8 Apr

Re: [Sursound] OT Stereo stage width - Was: Static stereo source in rotating soundfield, possible?

I believe the first effort to work around this with loudspeaker design called was the BBC dip. In sweden the stereo error compensation in speaker design is a well known factor, at least the readers of the forum www.faktiskt.as :-) and I believe not many of the better loudspeakers in the world are d

Re: [Sursound] Flac for FOA or amb files?

I will use foa in b-format, as far as i remember ambix is Only Chanel order different in for Higher order b-format .. Den 26 mar 2016 17:49 skrev "Stefan Schreiber" : > Bo-Erik Sandholm wrote: > > >> Rotate foa possibilites - I want headtracker support >> http:/

Re: [Sursound] Static stereo source in rotating soundfield, possible?

About the virtual speakers in FOA for stereo. And the ideal listening angle is real life os +- 23 degrees The best way to listen to stereo loudspeakers is not with totally linear speakers :-) There need to be some modfication to direct sound from the speakers if the sound to the ears is to be the

Re: [Sursound] Flac for FOA or amb files?

> > Best... > > Aaron (hel...@ai.sri.com) > Menlo Park, CA US > > On Fri, Mar 25, 2016 at 3:14 PM, Bo-Erik Sandholm > wrote: > > > > Has anyone a procedure or description on how to create 4 channel > > Flac flac files? > > > > I want to use V

[Sursound] Flac for FOA or amb files?

Has anyone a procedure or description on how to create 4 channel Flac flac files? I want to use VLC as a player on windows to start a vst chain for FOA to binaural processing. Best Regards Bo-Erik -- next part -- An HTML attachment was scrubbed... URL:

Re: [Sursound] 3D7.1 speaker setup

I have found that kef kht 2005 eggs are very good value when found second hand. The subs have problems with the power supply in the amps. Best Regards Bo-Erik On 22 Mar 2016 08:58, "Augustine Leudar" wrote: > For basic sound design me the most sensible and basic peripheral array is a > cube, qua

Re: [Sursound] Acoustic properties of round rooms ?

In the forbidden city in Beijing there is 2 monuments that are round an have interesting acoustic properties. The first is a round marble covered area enclosed with a marble balustrade. When you stand in the centre an speak out loud you hear your own voice in a way you have not done before. You vo

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