Voice-over-Bluetooth Low Energy for wearable and remote-control applications

June 11, 2015 // By Graham Prophet
BlueVoice drivers and libraries simplify product development with STM32 microcontrollers, Bluetooth Low Energy IC, and MEMS sensors; voice control that can make wearable technology simpler and more battery-friendly, according to ST, is now easier to add with a software-based approach.

In the wearables sector ease of use and extended battery life are already important points for buyers to consider, and voice control can enhance both by minimising touchscreen usage. ST’s wireless ICs, microcontrollers, and MEMS sensors are targetted for use in wearable electronics. With BlueVoice software, designers get all the drivers and libraries they need to implement voice transmission over a Bluetooth Low Energy connection in systems built around ST’s STM32 microcontrollers, BlueNRG ultra-low-power network processors, and digital MEMS microphones. All these are available in stackable development boards for easy prototyping.

Bluetooth Low Energy also offers advantages alongside Wi-Fi and ZigBee in Remote-Control Units (RCUs) for home-automation systems. ST’s development platform with BlueVoice software, the company says, implements voice and gesture control using a MEMS microphone and motion sensors, to implement a more intuitive and natural user-interface.

Based on the STM32Cube platform, the osxBlueVoice middleware and BlueVoiceLink software development kit (SDK) are part of the open.AUDIO licensing program, which supports designers working with ST’s MEMS digital microphones. open.AUDIO is linked to the STM32 Open Development Environment, which provides support for designers using STM32 ARM Cortex 32-bit microcontrollers in embedded projects.

The BlueVoiceLink SDK can be downloaded free of charge for evaluation and development at www.st.com/bluevoicelink-nb. Activation is via the licensing wizard tool included in the distribution package, and volume-license terms are straightforward for use in competitively-priced end products.

STMicroelectronics; www.st.com