The Open Component Portability Infrastructure (OpenCPI) is a real-time embedded (RTE) middleware solution that simplifies programming of heterogeneous processing applications requiring a mix of field-programmable gate arrays (FPGA), general-purpose processors (GPP), digital signal processors (DSP), and high-speed switch fabrics. The "mix" can be over a lifecycle (technology insertion) as well as within a single implementation (to meet SWAP constraints). CPI improves code portability, interoperability, and performance in FPGA and DSP-based environments by providing well-defined waveform component APIs with a set of infrastructure blocks that act as a hardware abstraction layer (HAL).
Jipes is a Java library that allows you to efficiently compute audio features. Possible uses for these features are general music information retrieval (MIR) applications or, more specifically, personal music software. Unlike many other digital signal processing (DSP) libraries or frameworks, Jipes is not meant for real time processing of a single audio stream that is manipulated and eventually played back. Instead, it focuses on efficiently executing mutiple processing pipelines that transform a signal into a feature or feature set. Since Jipes focuses on features instead of the raw, untyped signal streams, it supports rich types to be used, where other frameworks only offer arrays of raw data. Also, by using Java generics, many core interfaces and classes can be typed to whatever class you see fit for the purpose. However, Jipes also comes with useful pre-defined types and support for raw arrays.