Re: [Sursound] Bizarre

Michael Chapman wrote: Sebastià V. Amengual wrote: That was one of the main cons. With the four distances that I used in my measurements (10.44mm, 23.49mm, 48.34mm, 98.35mm) if we wanted to cover the whole frequency range, we needed at least 3 microphones with different spacing, and then

Re: [Sursound] Bizarre

>> Sebastià V. Amengual wrote: > > That was one of the main cons. With the four distances that I used in my > measurements (10.44mm, 23.49mm, 48.34mm, 98.35mm) > if we wanted to cover the whole frequency range, we needed at least 3 > microphones with different spacing, and then the > signals could

Re: [Sursound] Bizarre

A 01.11.2016 21:58, Stefan Schreiber escrigué: Sebastià V. Amengual wrote: I could be wrong, but as I understand, as far as the distance between the microphones is much smaller than the wavelength, it is possible to obtain first-order microphones with any kind of directional pattern. Thus, at

Re: [Sursound] Bizarre

https://www.youtube.com/watch?v=Mu8U7gYCGmw&list=LL45t78-1NUPa8SiAjf6hluw&index=3 Seems to confirm some of my speculations. "We can go up from 3 mems up to 30 or 40 mems." (1.55) Best, Stefan P.S.: "For cameras" Stefan Schreiber wrote: Dave Hunt: THe Harman mems microphones presumably

Re: [Sursound] Bizarre

Dave Hunt: THe Harman mems microphones presumably depend on their size, and shape, to make them directional. They are not "two omnis and some DSP" but "utilize an acoustical design to achieve directionality". 4mm wide is not too large, 22mm a bit more problematic. There seem to be some ot

Re: [Sursound] Bizarre

Sebastià V. Amengual wrote: I could be wrong, but as I understand, as far as the distance between the microphones is much smaller than the wavelength, it is possible to obtain first-order microphones with any kind of directional pattern. Thus, at least for a limited frequency range they could c

Re: [Sursound] Bizarre

On Tue, Nov 01, 2016 at 09:13:22PM +0100, Jörn Nettingsmeier wrote: > >>You could make six dipoles, one along each edge. > > > >But with 4 inputs you can have only 4 independent signals. > > Yeah, they are not linearly independent. I wonder how to map them... > was thinking you could derive those

Re: [Sursound] Bizarre

On 10/31/2016 12:07 AM, Fons Adriaensen wrote: On Sun, Oct 30, 2016 at 11:40:50PM +0100, Jörn Nettingsmeier wrote: Also, I think things get even funnier when you consider you don't have three pairs of omnis, for a differential receiver along each spatial axis, but rather a tetrahedron of omnis,

Re: [Sursound] Bizarre

On Sun, Oct 30, 2016 at 11:40:50PM +0100, Jörn Nettingsmeier wrote: > Also, I think things get even funnier when you consider you don't > have three pairs of omnis, for a differential receiver along each > spatial axis, but rather a tetrahedron of omnis, and the joys of > mapping that to B-format.

Re: [Sursound] Bizarre

On 10/30/2016 03:09 PM, Sebastià V. Amengual wrote: I could be wrong, but as I understand, as far as the distance between the microphones is much smaller than the wavelength, it is possible to obtain first-order microphones with any kind of directional pattern. Thus, at least for a limited freque

Re: [Sursound] Bizarre

2016 00:34:26 BDT To: Surround Sound discussion group Subject: Re: [Sursound] Bizarre Yes of course, and as the sphere gets bigger the high frequency accuracy gets worse. If you look at the mems with the pcb they are on, they look pretty big. For those that are interested, Harmon now mak

Re: [Sursound] Bizarre

On Sun, Oct 30, 2016 at 03:09:14PM +0100, Sebastià V. Amengual wrote: > I could be wrong, but as I understand, as far as the distance > between the microphones is much smaller than > the wavelength, it is possible to obtain first-order microphones > with any kind of directional pattern. Consider

Re: [Sursound] Bizarre

Very interesting and useful. Thanks a lot Sebastià. -- Marc On Sun, 30 Oct 2016 15:09:14 +0100 Sebastià V. Amengual wrote: > I could be wrong, but as I understand, as far as the distance between > the microphones is much smaller than > the wavelength, it is possible to obtain first-order micr

Re: [Sursound] Bizarre

Thanks Sebastia, looks like an interesting read. I will digest that later. Steve On 30 Oct 2016 14:09, "Sebastià V. Amengual" wrote: > I could be wrong, but as I understand, as far as the distance between the > microphones is much smaller than > the wavelength, it is possible to obtain first-o

Re: [Sursound] Bizarre

I could be wrong, but as I understand, as far as the distance between the microphones is much smaller than the wavelength, it is possible to obtain first-order microphones with any kind of directional pattern. Thus, at least for a limited frequency range they could create the four cardioid signa

Re: [Sursound] Bizarre

On 10/28/2016 08:22 PM, Marc Lavallée wrote: Here’s the link to the first “article": https://www.arkamys.com/ambisonic-microphone-ep01/ What a load of bollocks. Four omni capsules spaced closely together will give you... [drum roll]... an

Re: [Sursound] Bizarre

Joseph Anderson wrote: Hi All, Here's their other video, presented as an interview with Frederic Amadu, ARKAMYS Innovation Manager: https://www.youtube.com/watch?v=1Y647O7WUd0&feature=youtu.be Sorry, I just reposted the same link... And, here's the direct link to their product page: h

Re: [Sursound] Bizarre

Steven Boardman wrote: Yes of course, and as the sphere gets bigger the high frequency accuracy gets worse. If you look at the mems with the pcb they are on, they look pretty big. For those that are interested, Harmon now make cardiod mems. They won't release spec though, unless one puts in a

Re: [Sursound] Bizarre

mailto:sursound@music.vt.edu> Subject: Re: [Sursound] Bizarre On Sun, 30 Oct 2016 00:34:26 +0100 Steven Boardman wrote: > Yes of course, and as the sphere gets bigger the high frequency > accuracy gets worse. > If you look at the mems with the pcb they are on, they look prett

Re: [Sursound] Bizarre

On Sun, 30 Oct 2016 00:34:26 +0100 Steven Boardman wrote: > Yes of course, and as the sphere gets bigger the high frequency > accuracy gets worse. > If you look at the mems with the pcb they are on, they look pretty > big. For those that are interested, Harmon now make cardiod mems. > They won't

Re: [Sursound] Bizarre

Yes of course, and as the sphere gets bigger the high frequency accuracy gets worse. If you look at the mems with the pcb they are on, they look pretty big. For those that are interested, Harmon now make cardiod mems. They won't release spec though, unless one puts in a massive order. I already e

Re: [Sursound] Bizarre

Marc Lavallée wrote: Here’s the link to the first “article": https://www.arkamys.com/ambisonic-microphone-ep01/ Just to remember some former discussion (about Nokia's Ozo mike): The MEMS capsules mounted on some sphere will show some ca

Re: [Sursound] Bizarre

Hi All, Here's their other video, presented as an interview with Frederic Amadu, ARKAMYS Innovation Manager: https://www.youtube.com/watch?v=1Y647O7WUd0&feature=youtu.be And, here's the direct link to their product page: https://www.arkamys.com/product/entertainment-360-sound-for-360-video/ A

Re: [Sursound] Bizarre

Here’s the link to the first “article": https://www.arkamys.com/ambisonic-microphone-ep01/ > On Oct 28, 2016, at 11:33 AM, Steven Boardman > wrote: > > They have an article (a first installment that doesn't say much) on their > site too. Its

Re: [Sursound] Bizarre

That's kinda what i thought. Is it actually possible to create one with only 4 omnis on a tight sphere, if so i would love to know how. I'm sure it wouldn't sound good though just using mems... S On 28 Oct 2016 17:55, "Augustine Leudar" wrote: > Sure this isn't a spoof ? > > On 28 October 2016

Re: [Sursound] Bizarre

On 28 October 2016 at 09:54, Augustine Leudar wrote: > Sure this isn't a spoof ? > ​It's a long time before April 1 C-)​ > > On 28 October 2016 at 16:33, Steven Boardman > wrote: > > > They have an article (a first installment that doesn't say much) on their > > site too. Its how to bui

Re: [Sursound] Bizarre

Sure this isn't a spoof ? On 28 October 2016 at 16:33, Steven Boardman wrote: > They have an article (a first installment that doesn't say much) on their > site too. Its how to build an ambisonic mic for less than $99, using 4 omni > mems capsules?? > > Zokm already have done an update to the H2

Re: [Sursound] Bizarre

They have an article (a first installment that doesn't say much) on their site too. Its how to build an ambisonic mic for less than $99, using 4 omni mems capsules?? Zokm already have done an update to the H2n that allows horizontal ambisonics, but that has 5 mics built in. I take mine with me e

Re: [Sursound] Bizarre

cor! terrible advert! I don't know what I'm supposed to learn from that! love the idea of having something really mobile though. I had a dream a couple of days ago that Zoom had made a new ambisonic mic for my Zoom H6. On Fri, Oct 28, 2016 at 4:12 PM Steven Boardman wrote: > Another mobile ambis