Analog Devices has introduced an embedded system for generating engine sounds for electric (EV) and hybrid electric vehicles (HEV). The ADSP-BF706 digital signal processor and electric vehicle warning sound system (EVWSS) firmware enable automakers in North America and other global regions to comply with future safety regulations, requiring external engine sound for low-speed electric and hybrid vehicles.

The ADI solution includes a complete hardware and firmware reference design. It can be extended for high performance with the ADSP-BF706 or entry-level applications with the ADAU1450 digital audio processor. The ADSP-BF706 can also be used to create in-vehicle engine sounds that provide a better driving experience for the owner. The ADSP-BF706 uses memory-mapped quad SPI memory for faster, simpler access to stored audio files used to create engine sounds. Compared to traditional products, it can access up to 24 WAV files simultaneously, while traditional products usually only have 5 access.

ADI's Sigma Studio Integrated Development Environment (IDE) enables OEMs to graphically adjust audio sounds while using the ADAU1450. This allows sound engineers to optimize audio performance with minimal programming experience while reducing development time. The new Sigma Studio supporting the ADSP-BF706 will be available later this year. In addition, the ADSP-BF706 supports a low-cost CAN software stack to help customers quickly build automotive-grade prototypes.

For more information on the ADSP-BF706, please refer to the ADI website: www.analog.com