LASeR is currently used on many mobile platforms. However, it lacks efficient capabilities to communicate with other terminals:
M15677 LASeR Requirements for Person to Person Communication Services Signalling
defines these.
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Several requests for standardizing a profile for lossless audio coding were made by different industries.
M15628 Proposed new profile for MPEG-4 SLS
M15660 Proposal for MPEG-4 ALS profile/levels
M15715 Comment on proposal for MPEG-4 ALS profiles/levels
The first two profiles for coding lossless audio are now defined in WD on New Profiles for ALS and SLS (N10033):
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SLS, which is supported by several companies, provides an enhancement to AAC and it will be called HD-AAC. The selected tools provide a good balance between coding efficiency and complexity.
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ALS, which is requested by ARIB (Association of Radio Industries and Business) in Japan, is seen as a low complexity alternative to PCM coding of multi-channel audio signals. In order to stabilize this profile, firm support from the ARIB consortium will have to be provided.
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