This paper describes an Engine Sound Synthesis (ESS) system designed to provide a high degree of flexibility in the sound design process. The ESS system uses a mixture of additive synthesis, granular synthesis, and a Fourier series based synthesis approach, in combination with an extensive selection of filtering and effects processing options. The ESS system enables the creation of a variety of engine sounds including traditional internal combustion engines, as well as more non-traditional (futuristic) sounds. A flexible automation feature enables the simulated engine sounds to change and evolve in real-time based on CAN bus message from the vehicle. The system operates as a standalone Windows PC application or on an ARM-based embedded hardware platform. Some of the considerations in the design of non-traditional engine sounds are also explored.
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