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Atmos

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hvac:
Sorry I thought of another question. How does a flat 2D recording, microphones all in the plane, become 3D? I don’t think that data manipulation can do that can it?

arcspin:
"Sounds are added post production…in a Foley studio. Can be enhanced by ADR.” Now I’m understanding. “The sound designer has control over the process.”
It is looks like the Atmos creation process happens immediately post production?
Answer: Yes, The sound is created and mixed in a studio by the Sound designer with the Director weighing in on what he or she want to emphasize in a scene.

Does this mean it can be applied to older films recorded before Atmos was created?
Answer: Yes, the studion owns all of their foley sounds that have been made in their Foley studion. Every sound is proprietary.
That is why for example a lightsaber in a Star Wars movie from 1977 can sound the same in 2018. Disney owns the sound a lightsaber makes in the Star Wars universe.

Also since decoding is done in the home theater or elsewhere, would it be fair to say the encoding is created in the Foley studio? Now does the sound designer have leeway? I’ve read that they do? Does that leeway compromise the end Atmos product?
Answer: The Director have the final say, but rely on their competent Sound designer to transfer the Directors wish into the sound mix.
https://robsummers.co.uk/the-top-10-famous-sound-designers-of-all-time/
Answer: No, the encoding is not done in a Foley studio. In the Foley studio audio track of someone walking, wind whooshing or any other sound are created and stored as separate tracks. Then the tracks are given to the Sound designer who puts everything together in for example Pro Tools (there are other similar softwares that can be used).

Here you can see a short of how it looks in Pro Tools.
https://www.youtube.com/shorts/1OTuxJ9tMYg

A longer video on how to edit sound in post:
https://www.youtube.com/watch?v=4asDEpzUFpc

What it can look like in a Foley studio:
https://www.youtube.com/watch?v=UO3N_PRIgX0&t=63s

Would it be fair to say the Atmos encoding done in the lab is where the Atoms movie is different from the usual Dolby Digital 7.1.
Answer: No, there are no fundamental difference in making a 7.1 or a 7.1.4 mix. You just add more tracks and objects.
The studio will release several different audio releases of the same movie. There can be different mixes like stereo, 5,1, 7,1, 7.1.4 included on the same Bluray-disc.
Not just an electronic derivative of the original. Still to this lay person it is a little evasive.

You’ve cleared the air. Bravo.
Answer: I'm no expert but it is fun to try to explain for myself and others  :)

arcspin:

--- Quote from: hvac on June 09, 2024, 10:28:44 am ---Sorry I thought of another question. How does a flat 2D recording, microphones all in the plane, become 3D? I don’t think that data manipulation can do that can it?

--- End quote ---

Answer: Yes, If the studio have the stems (also tracks) from the original recording and with those stems (tracks) they can, make a whole new recording and place individual instruments in a 3D environment. If they do not have the stems it is not going to be a good Atmos mix, but they can still make an Atmos mix.

What are stems:
https://www.youtube.com/watch?v=l9nU1gqc44o

Mixing stereo to Atmos
https://www.youtube.com/watch?v=GxQTa5TthIg

hvac:
Are the spacial sounds, stems then created? From sounds post production? So these sounds can be made to come from above the listener even though they weren’t recorded above. And the spacial sound, it’s like a computer generated video only involving sound.
How do you know all this stuff? I don’t find it in the lay press. Thanks again.

arcspin:
Yes, when they have individual tracks from every instrument and vocals they can do pretty much anything with those tracks.
They can pan, lift, reverb, increase, decrease sounds every which way they want.
They can have sounds pan from left to right, back to front and up and down pretty much without any limitations.

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