To implement new layouts related to 9.1.6ch #834
Conversation
sunghee-hwang
requested review from
tdaede,
jwcullen,
felicialim,
yeroro and
Frank-Ba
index.bs
Outdated
|
|
||
| For a given input [=3D audio signal=] with an expanded channel layout defined in [=expanded_loudspeaker_layout=], [=num_layers=] SHALL be set to 1 (i.e., it is a non-scalable channel audio element). Except [=9.1.6ch=] [=Audio Element=], it is RECOMMENDED to use such an [=Audio Element=] as an auxiliary [=Audio Element=] to be mixed with a primary [=Audio Element=] (e.g., TOA or 7.1.4ch) within a [=Mix Presentation=]. If parsers encounter a [=loudspeaker_layout=] = 15 for any layer other than the first layer, they SHOULD skip the [=channel_audio_layer_config=] for that layer and all subsequent layers. | ||
|
|
||
| Stereo (L/R) is shared with the stereo pair FLc/FRc, Stereo-RS (Lrs/Rrs) is shared with the stereo pair BL/BR, Stereo-TF (Ltf/Rtf) is shared with the stereo pair TpFL/TpFR, Stereo-TB (Ltb/Rtb) is shared with the stereo pair TpBL/TpBR and 3.0ch (L/C/R) is shared with FLc/FC/FRc. |
There was a problem hiding this comment.
Could you please clarify what "shared with" means?
There was a problem hiding this comment.
For example, for 9.1.6ch + FLc/FRc, the actual signaling would be 9.1.6ch + L/R.
There was a problem hiding this comment.
Got it. WDYT about making it more explicit with something like "The following channel layouts may additionally be indicated using an existing loudspeaker_layout or expanded_loudspeaker_layout. The stereo pair FLc/FRc is indicated using Stereo (L/R)."
There was a problem hiding this comment.
Thank you for the improvement.
Co-authored-by: Felicia Lim <flim@google.com>
Co-authored-by: Felicia Lim <flim@google.com>
Let's handle it with the other editorial updates. |
|
[Question] How do you feel adding the Top-6ch of 9.1.6ch? |
This makes sense. |
|
4.3. IA Base-Enhanced Profile if 9.1.6 layout is added as input layout , the max channels in a mix should be 32 which 16 channel is for 3rd-order Ambisonics and 16 channels are for 9.1.6 |
You are right. But as our latest consensus limits the sum of channels up to 28, it does not allow the mix of TOA and 9.1.6ch. |
…an input audio to 22.2ch
Clarify layout for loudness when using expanded channel layouts
Preview | Diff