An approach to building analog synthesizers may be found by exploiting a new mixed-signal technology called the Programmable System-on-Chip (PSoC), which includes a CPU core and mixed-signal arrays of configurable integrated analog and digital peripherals. Another approach is to exploit a System on Chip (SoC) comprising an ARM-based processor and an FPGA. Two synthesizers were built and evaluated for sound quality and difficulty of implementation. Each of the approaches produced a synthesizer of good sound quality. The mixed-signal approach was cheaper in both component costs and development time compared to the FPGA-based approach.
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