D.3. 3D Audio Profile
The 3D Audio scene graph profile provides for a set of BIFS scene graph elements for usage in audio-only applications.
Levels 1 to 4
The levels specified in Table D.6 are based on a sampling rate of 44,100 Hz at 16-bit resolution [N4264].
Level 1 | Level 2 | Level 3 | Level 4 | |
---|---|---|---|---|
Maximum number of spatialized sources per scene[1] | 8 | 32 | 64 | 128 |
Number of temporal sections whose levels and time limits can be controlled individually for each source | 1 | 1 | 2 | 3 |
Maximum number of independent late reverberation processes per scene | 1 | 1 | 2 | 4 |
Maximum number of control frequencies in reverberation process filters, source directivity filters, and material filters | 2 | 2 | 3 | 3 |
[1] These spatialized sources can include ...
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