Absolutely fantastic. Thank you so much for the demo patch. It works just great.

@michel

Late thanks for that: it opened just fine in the new version of TouchOSC and I've been poking about a bit, understanding how you made it. When we start work on the show again in a few weeks what you sent will be very, very useful! Thank you!!!

We've just uploaded an example file that allows you to follow along with the Isadora 4.5 Introduction video.

We've just uploaded an example file that allows you to follow along with the Isadora 4.5 Introduction video.

@mr_j said:

even shows ipad battery level

 Yes, I really like that one of the parameters TouchOSC lets you broadcast is the device's battery level. Such a handy feature.

@woland Hello all. I am sorry I am ut of the forum at the moment. But Here is my take for the ambisonics in Isadora. I'll report much much more in the future because I believe this is one of the future of sound in real time applications, recorded sound and xr projects creations in Isadora.

In order to solve Simon problem we have to think in 4 stages

1) Recorded versus live

So, first of all, I have no experience in real time use of microphones in Isadora. I was able to conect a Zylia SM1 and a Zylia SM1S, third order ambisonics microphone in Isadora but for the moment I don't see a use case for it. It worked, but I'll dive into live later. My work is done solely on recorded sound at this moment, but I answer here for recorded sound. I hope it can help and I think it might.

A little bit of theory

You all probably know the rule of thumb to understant High Order Ambisonics (HOA). The higher the order the higher the number of micrphone capsules inside an ambisonic microphone and the higher is the spatial precision and lower signal to noise ratio.

The rule is the following : order +1 suqared

First order : (order 1) + 1 =2, squared = 4 : First oder (like Ambeo) is 4 capsules

Second order (order 2) +1 = 3, squared = 9 (minimum)

Thiurs order (order 3) +1 = 4, sqared = 16 (minimum)

etc.

2) A format versus B format

Now, the second thing to know (and maybe this is a part of the problem that Simon is having), is that the raw recording, called A format, is useless per se. A format is just used to transcode into B format in order to get to he spatial harmonics that can be really used to rotate pitch yaw and roll the rource and spatialize it.

Normally a microphone outputs just the A format. A daw, through a plugin -vst or otherwise- can transform it into B format and then only rotations and translations can happen. It CAN do it in real time, but if you work like me with recorded sound... there is no need to ask isadora to do something that you can render as a file to free cpu for other stuff.

So I only work with files transcoded into B format.

3) Virtual microphones (or not)

Once you have the b format the new amazing sound possibilities in Isadora allow the Audio FIe player to play HOA files, only then you can use rotators like my favourite IEM Scene Rotator you could place virtually infinite virtual microphones in the chain and move the microphones towards or far away from the sources in ordeer to navigate into the sound in real time in 6 DoF (six degrees of freedom : translation on x, y, z axis and rotation on x y and z axis). But just rotating inven without placinv virtual microphones is already astonishing because scene rotation is very different from traditional panorami potentiomenters in daw and mixers. PanPot (Panoramic potentiometers so called in the audio world just lower the volume of one ear (like isadora Audio Output "pan" input property). In ambisonic workd this is meaningless because through a rotato you really feel that the source is moving WITHOUT lowering the volume of one of the ears. The source is "REALLY" moving into space. So, unless you want 6DOF (for VR applications for instance) you don't need virtual microphones creation and translation in space : rotation is enough. Ambisonic rotation is more subtle, but so much more realistic. I'll never be able to go back, personally

4) Rendering

 Thaat is where lies another complexity but essential stage for playing the sound. Ambisonic files fo either throug a multispeaker setup or a headphone. in my experience a 2 speaker set is not enough to perceive at the same time the sublte source shifts. It works better starting from 4 speakers. But it can work very well in a headphone. In the case of 2 speakers or headphones you need a binauralizer that renders whatever order into 2 channels. This is called binauralization.

So please remember that isadora is ONLY compatible with VST 3 (so, forget the Sparta Ambisonic plugins for the moment because they are VST 2) Download IEM plugin suite and try this patch directly with b format. It works for me b-format-isadora-test.izz douible click  the scene rotator and move the yaw from -90 to +90 you'll hear (better with a headphone first) the miracle of ambisonics screenshot-2026-08-26-at-02.37.56-resized.png

Please keep me posted

@bodo said:

should be able to play one mp4 (i know hap is better) ....???? are there any known incompatibility with izzy

Yes, but there are various ways that different software can spit out mp4 files. There are known issues with certain quirky things like embedded timecode tracks and the h265 codec (though that problem may be limited to Isadora 3 and older) that can cause issues in Isadora, which is why our first suggestion is always to transcode any media files that are misbehaving in Isadora.

@bodo

Please open a support ticket, and supply a link to download your video file, and I will run the file on my Windows 11 test machine.

@jrhooker

I agree with @woland re HDMI EDID emulators. It can help to stop this kind of glitch where if one connection falters it affects them all. But not always.

These ATEN ones are cheap, cheerful, and effective.

It's curious that the Viewsonic's connection drops only when both projectors attached. Do you have it set to the HDMI input, or is on auto-find connection? 

Who makes your USBC to HDMI dongles? IME cheap ones can be problematic and not even the HDMI emulator will solve an issue with them.
I've never encountered the OREI brand before. I see they are based in Illinois. You could reach out to them and see if they have a suggestion.

HTH Mark (not that Mark)

@dusx

the file is not corrupted it plays completly smooth on other machines / software - and Izzy and a Laptop with these specs should be able to play one mp4 (i know hap is better) ....???? are there any known incompatibility with izzy and the newest win11????