I mastered a music to ambix format. Previewing it right from the inventory gives a pretty decent spatial projection, but playing it from a audio object inworld is rather flat. I tried all kinds of rotation of the audio object, point and sphere as well. Am I missing something?
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Torley - Sansar Hey Mikki, did you rename the file to end with .ambix ?
So for example, song.ambix
You need to do that in order for it to be recognized as 4-channel Ambisonic. Othewise, it gets incorrectly uploaded as a stereo wav.
Note: the .ambix.wav suffix doesn't currently work as intended, but it's been fixed for a future release... so then files from some other sites like Oculus' sample pack will work without renaming.
Please let me know!
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Torley - Sansar This and further details are explained more here: https://help.sansar.com/hc/en-us/articles/115001721746-Ambisonic-sounds
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Mikki Miles I did rename the file to the suffix .ambix. The music sounds like expected when I listen to it from the inventory. The tracks that are supposed to move do move, and a rhythmical delay comes from where I put it. Played inworld it sounds static and flat, like a narrow stereo sound, if at all.
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Torley - Sansar Mikki, can you please send me a link to an example experience where the music sounds flat to you? Or give me a link to the .ambix file.
Have you also tested some sample sounds from the Oculus link above? Do you feel there is a similar "flatness" when comparing in inventory (non-diegetic) vs. in-scene?
Or... is the difference particular to your music?
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Mikki Miles I will send you the links. what is your address?
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Torley - Sansar torley at lindenlab dot com
And please confirm:
(1) As above, whether other ambisonic files are experiencing a similar flattening to you?
(2) What external DAW/ambisonic gear are you using to create this music? Like what's your workflow?
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Torley - Sansar Thanks Mikki, I'll check this out.
Mikki also reported: "Ich tested an oculus sound example, it sounds flat too, but fine from the inventory"
It sounds as-expected to me in a scene, rotating the surround soundfield as I turn my avatar in 1st-person, and hasn't changed since months ago. Although I acknowledge that earlier, Draxtor Despres had similar concerns (I think it had to do with the high-end frequencies being rolled off?) and shared some comparison videos.
We can process ambisonic sound sources differently than others, so if there's a broad problem we can identify, we can do something about it. We use Google VR plugins (similar to what's used with YouTube videos) as part of our spatialization process.
If you had to explain further, why does it sound "flat"?
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Mikki Miles Flat as like with no projection within a space, more like 2D
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Torley - Sansar Hey Mikki.
The file you sent me is "GeigenAmbix.ambix.wav". Just to be sure, you did rename it to "GeigenAmbix.ambix" (NO .wav) and Windows isn't hiding extra file extensions, right?
I uploaded it into a test scene, compared both inventory preview and in-scene playback. In-scene in the layout editor I used the following settings with Audio Preview on:
- Sphere emitter, with my camera in the middle
- Loudness Level = 80 - which I believe is the same as inventory preview volume
- Radius = 5 m - just so it's large enough for me to easily position inside
They sound like essentially the same content, aside from inventory preview. being unrotatable. I'm hearing distinct spatialization as I turn around.
I also visited your scene. Presumably the reference figure you have there is at the center of the invisible emitter? It does sound "flatter" in yours, not rotating to match as my camera does, and I am really wondering if it's because it inadvertently got uploaded as a .wav rather than being correctly recognized as .ambix (or maybe I've got the emitter location wrong)
In a future release I'll have an internal way to distinguish true ambisonic content. I know the renaming thing is kind of confusing.
Cool music BTW!
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Mikki Miles Uhm, I have no idea what happened to the suffixes, will check that tomorrow.
the reference figure is indeed the point of the audio emitter
I‘ve already shut my machine down, it‘s late here ;-)
thanks for your efforts, I will report tomorrow. It‘s a holiday here, and it‘s raining, so lots of time...
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Mikki Miles ok, got up early, can't sleep well with unsolved questions ;-)
somewhere on the journey across my computers and platforms the .wav has been added, but it didn't show up in the filesystem, I had to open the file info window to see that :-/
removed .wav, uploaded the file and it was just the same as before - in my sandbox. Then tried on a different experience, this time it worked, went back to the sandbox, and it worked there now, too. Some cache related phenomena?
thanks for your efforts, Torley, this was again very helpful.
What did we learn? Never trust your computer
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