STMicroelectronics has released an Amazon-qualified reference design package for smart connected devices leveraging Alexa Voice Service (AVS) Integration for AWS IoT Core, which can be used to create Alexa Built-in products using simple microcontrollers (MCUs).
“We believe the AVS Integration for AWS IoT Core can revolutionize users’ expectations of smart devices by enabling easier access to their powerful features and delivering more rewarding experiences,” said Daniel Colonna, Marketing Director, Microcontroller Division, STMicroelectronics. “Our reference design leverages the inherent strengths of STM32 microcontrollers and the supporting solution to enable cost-efficient products with unbeatable functionality, small size, and fast time to market.”
“The STM32H7’s combination of large internal RAM and Flash, peripheral integration, and high-speed processor enables TalkTo, our high-performance audio front-end, to drive significantly better performance in real-time,” said Paul Beckmann, DSP Concepts Founder and CTO. “TalkTo is delivered through Audio Weaver, so product makers can quickly design, develop and deploy a wide range of voice-enabled products.”
ST’s Amazon-qualified solution jump-starts the design of Alexa-enabled appliance controllers, with Alexa voice-user-interface software already integrated on high-performing MCUs of the STM32 family. The energy-efficient STM32, being the world’s most successful 32-bit Arm Cortex-M MCU family, is ideal for low-cost, small, and simple connected devices that require state-of-the-art features such as far-field audio capture and natural-language understanding.
STM32 MCUs integrate all necessary system features including powerful audio front-end processing, local wake-word detection, communication interfaces, and memory, including RAM and Flash, in a single chip. This integration enables the board to have small dimensions and a simple layout for cost-effective deployment in customers’ end products.
The audio front end delivers outstanding far-field voice detection, even in noisy environments and with closely spaced microphones. Created by ST Authorized Partner DSP Concepts, distributed by ST as part of the STM32 MCU and supported by ST channels, the front end comes with a free Audio Weaver tool license to help users easily fine-tune their designs.
Leveraging the features of the high-performance STM32 microcontrollers, users can customize and scale their designs by adding enhancements such as a second wake word, extra local commands, and a graphical display to combine with the voice-command capability for an even more compelling user experience.