Organisation internationale de normalisation

5.1.2Interactive Music AF, M15626

M15710 - Requirements

The presentation emphasized that interactive music permits a very new user experience. For example, several mixes of a song could be presented. Interactivity options are represented via a graph concept and supports tracks (objects), volume, equalization, specialization.

The main contribution is the notion of constraints on the user experience (i.e. possible mixes). There is strong support among artists for the concept of constraints, where such constraints can be

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  Constraints on tracks selected
  
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  Constraints on volume of tracks or relative volume of tracks
  
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  Constraints on equalization of tracks
  

There are three components of Interactive Music AF:

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  Metadata
  
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  Presets and Constraints
  
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  Audio representation
  

Audio experts noted that SAOC could be an excellent coded representation for applications in which the audio information flows across a narrowband transmission channel (e.g. streaming to a mobile phone). Juergen Schmidt, Thomson, noted that MPEG-4 BIFS could be used to implement many of the mixing functionalities. The Systems Chair noted that BIFS does not have extensive support for the concept of saving and retrieving presets.

The Audio Chair noted that there should be a requirement that the solution should be able to operate in a way that the audio information is retrieved via a relatively narrow-band communication channel.

The Audio Chair noted that the current requirements are captured in N9840, MAF under considerations.

These requirements, as augmented by contributions and contributions from this joint meeting, will be reviewed Friday at 11:30 in the Requirements room.