sucessão em uma hierarquia de nível de qualidade de sinal

摘要

A first set of reconstruction data includes a symbol specifying an attribute setting of a parent element in a rendition of the signal at a first level of quality. The attribute setting can be one of multiple attribute settings of the parent element indicating how to configure the parent element for the rendition of the signal at a first level of quality. A signal processor divides the parent element into multiple sub-elements to reconstruct the signal at a second, higher level of quality. The signal processor utilizes the rendition of the signal at the first level of quality and the attribute setting of the parent element as specified by the symbol (at the first level of quality) to produce a default attribute setting for one or more respective sub-elements (into which the parent element is divided) unless reconstruction data to reconstruct the signal at a higher level of quality specifies a different attribute setting for the respective sub-elements.