This paper presents some key concepts for a new just in time programming language designed for high performance DSP. The language is primarily intended to implement an updated version of PWGLSynth, the synthesis extension to the visual musical programming environment PWGL. However, the system is suitable for use as a backend for any DSP platform. A flow control mechanism based on generic programming, polymorphism and functional programming practices is presented, which we believe is much better suited for visual programming than traditional loop constructs found in textual languages.

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