The environments presented in this category are frameworks in the sense defined in section 1.3. They provide access to the sources code and allow extending it in a white box manner but they also offer components that can be used in black box mode.
We also subdivide this category into three different subcategories. Analysis oriented audio processing frameworks are those that focus on offering tools for signal analysis, understanding and classification and hardly offer any tools for processing or synthesizing sounds. Synthesis oriented frameworks are, on the opposite, those that offer tools for audio processing and synthesis but not for analysis. Finally, the broadest subcategory, that of general purpose audio processing frameworks, includes frameworks that provide tools for both analyzing and synthesizing sounds.