360 Reality Audio Files

To Distribute 360 Reality Audio sound files with your Master -

1. go to amp.tullyapp.com

2. upload your Master (there must be a WAV or MP3 version of the final Master mix in your Masters subfolder)

3. navigate to the 360 Reality Audio subfolder of the Master

4. upload your 360RA files

5. when you are ready to distribute, click advanced menu on the Master and select Distribution

6. the 360RA files will be included in the transport to the supported DSPs

Currently only Amazon and Tidal support 360 Reality Audio. So not all your DSPs will publish your 360 audio.

Music Album Cover Art Profile

• JPEG with .jpg extension (quality unconstrained) or PNG with .png extension

• Color space: RGB (screen standard)

• Album cover art files should be a recommended size of 3000 x 3000 pixels; minimum size of 1400 x 1400 pixels.

• For ringtones, minimum size of 800 x 800 pixels. 1400 x 1400 pixels recommended for best results

• Images must be square

• File formats: JPEG or PNG (100% quality)

• 1:1 aspect ratio

Do not increase the size of a smaller image to meet the minimum size standard. Excessively blurry or pixelated images will be rejected.

Important: CMYK (print standard) images will not be accepted.

Immersive Audio Source Profile

Immersive audio source must meet the following requirements.

Dolby Atmos music deliverables

• Dolby Atmos audio files generated from stereo mixes are not allowed. Specifically:

  • A Dolby Atmos track must be created from multitracks or stems created from multitracks.

  • Upmixing from a stereo release is not allowed.

  • Extracting stems (“de-mixing”) from a stereo release is not allowed.

  • A Dolby Atmos track consisting only of a stereo mix placed in the sound field with added ambience or reverb is not allowed.

• Provide the Dolby Atmos file as a Broadcast Wave Format Audio Definition Model (BWF ADM) file.

• All tracks within a project must be at the same frame rate.

• All audio must be 24-bit linear pulse code modulation (LPCM) audio at 48kHz.

• You must conform and sync the Atmos files with the stereo reference files for the same project.

• The integrated loudness value should not exceed -18 LKFS measured as per ITU-R BS. 1770-4.

• True-peak level should not exceed -1 dB TP measured as per ITU-R BS. 1770-4.

• Full-frequency content should not be present in the Low-Frequency Effects (LFE) channel of the BWF ADM.

• For albums where gapless playback is intended between tracks:

  • Each album track must be delivered as an individual BWF ADM file.

  • Each track boundary must be no more than half a frame (1,000 samples @ 48 kHz) earlier or later than the same track boundary in the corresponding stereo deliverable.

  • There must be no additional silence at the end of each track when compared to the same track from the corresponding stereo deliverable.

Note: Immersive audio that does not meet the requirements may be removed from Apple Music.

5.1 Surround and 7.1 Surround deliverables

Note: 5.1 and 7.1 audio files generated from stereo mixes are not allowed. Upmixing from 5.1 to 7.1 is not allowed. The 5.1 and 7.1 audio files must be delivered according to the guidelines below.

• Audio files must be provided as LPCM in .mov containers with channel assignments.

• Deliver files at 48 kHz with 16-bit or 24-bit resolution.

• The integrated loudness value should not exceed -18 LKFS measured as per ITU-R BS. 1770-4.

• True-peak level should not exceed -1 dB TP measured as per ITU-R BS. 1770-4.

• You must conform and sync the deliverables with the stereo reference files for the same project.

Immersive Audio Channel Assignments

• The QuickTime .mov file extension is expected for immersive 5.1 and 7.1 audio content.

• For 7.1 surround audio, each audio channel must have an assignment, which must match one of the options in the table below. Option 1 shows one track with all eight channels and Option 2 shows one track for each channel. Note that “Rsl” (Rear Surround Left) can also be represented by “Rls” (Rear Left Surround).

• For 5.1 surround audio, the channel assignments must match one of the options in the table below. For Option 1 (one track with all six channels), the order of the channel assignments can vary as noted in Option 1a, 1b, 1c, and 1d.

  • For all stereo tracks in all options listed, the channel assignments can be indicated using L and R, or Lt and Rt, but not L and Rt, or R and Lt.

  Refer to Audio Channel Assignments for instructions on applying audio channel assignments and label descriptions.

Best Practices for Immersive Audio Content

Keep the following in mind when delivering immersive audio:

• On initial delivery, you must deliver a data file with the role audio.2_0 containing the 2.0 stereo audio source unless you instruct Apple to downmix, using the audio.transform_to.2_0 attribute.

• Only two audio sources per track (one stereo, one immersive) are allowed.

• You cannot deliver two immersive audio sources or two stereo sources for the same track.

• A single data file containing both 2.0 stereo source and 5.1 or 7.1 immersive source is not supported.

• The difference between the most recently delivered (new or update) stereo source and immersive source durations must be less than or equal to 50 milliseconds.

• All tracks in an album should be at same frame rate.

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https://help.apple.com/itc/videoaudioassetguide/#/itcf946aaace

Dolby Atmos file specifications:

• Provide the Dolby Atmos master file as a Broadcast Wave Format Administrative Template (BWF ADM) file

• All tracks within a project must be at the same frame rate

• All audio must be 24-bit LPCM audio at 48kHz

• All deliverables must be conformed and synced to the original stereo reference masters

• The difference between the most recently delivered (new or updated) stereo source and immersive source durations must be less than or equal to 50 milliseconds

• Target Loudness value should not exceed -18 LKFS measured as per ITU-R BS. 1770-4.

• True-peak level should not exceed -1 dB TP measured as per ITU-R BS. 1770-4.

• Dolby Atmos audio files generated automatically and/or algorithmically from a stereo master are not allowed and will be rejected by Apple Music

• Click here to view the full list of Apple Music specifications

How do I create a Dolby Atmos version of my song?

https://professional.dolby.com/create-in-dolby-atmos-music/#gref

to learn more about how to create music in Dolby Atmos. The Dolby Atmos Production Suite and the Dolby Atmos Music Panner VST plugin are two good places to start.

Check out our Dolby Atmos guide for more information!

Create Dolby Atmos Music

https://professional.dolby.com/create-in-dolby-atmos-music/#gref

Submission Guidelines | (sonymusic.com)