This International Standard defines a Multimedia Content Description Interface, specifying a series of interfacesfrom system to application level to allow disparate systems to interchange information about multimedia content. Itdescribes the architecture for systems, a language for extensions and specific applications, description tools in theaudio and visual domains, as well as tools that are not specific to audio-visual domains. As a whole, thisInternational Standard encompassing all of the aforementioned components is known as “MPEG-7.” MPEG-7 isdivided into eight parts (as defined in the Foreword).This part of the MPEG-7 Standard (Part 4: Audio) specifi