DSS is not supported by iOS.
The audio technologies in iOS support the following audio formats:
- AAC
- Apple Lossless (ALAC)
- A-law
- IMA/ADPCM (IMA4)
- Linear PCM
- µ-law
- DVI/Intel IMA ADPCM
- Microsoft GSM 6.10
- AES3-2003
For information about each of the audio frameworks, see the corresponding entry in “Media Layer Frameworks.”