What are potential connections between MPEG-7 tools and existing tools?
There are many possible connections between MPEG-4 tools and MPEG-7. Most of the content-specific tools contained in MPEG-4 have great potential because a model for the content is already specified: by choosing a method of coding, one selects the features that are important to the material. For example, if one encodes a sound by using sinusoidal tracks, then MPEG-7 asks which of those tracks are most significant in distinguishing the sound. It is a matter of abstraction up to the point of measuring similarity. The Structured Audio tools also have a strong relationship to MPEG-7. They synthesize a sound from an already-existing description. The challenge in this case is to reach a suitable level of abstraction. There can be many, very different, descriptions which can be synthesized into perceptually indistinguishable sounds. It is clear that the models (e.g. of a musical instrument or an acoustic space) used directly within structured audio will not be sufficiently abstract or constrai
