The design of sound simulators for aircraft and other vehicles has often presented a variety of problems in areas of integration, flexibility, maintenance and life cycle cost. Recent developments in digital signal processing (DSP) technology have provided a powerful and cost effective solution to these problems by way of a special device known as a single-chip digital signal processor. This technology allows fixed hardware to be highly flexible by using software algorithms to perform functions that would normally require analog oscillators, noise generators, filters and amplifiers. This approach eliminates recurring hardware design, simplifies integration, increases system reliability and provides better quality and control of sound parameters. This paper describes the features and advantages of a DSP-based sound simulator prototype that is capable of generating complex tone scenarios such as those found in avionic systems and other sounds such as those developed by a vehicle and its surrounding environment.