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STMicroelectronics Simplifies Creation of Alexa Built-In Smart Home Devices with Amazon-Qualified Reference Design
STMicroelectronics Simplifies Creation of
- Reference design eases development of simple and cost-effective natural-language understanding and voice-based user interaction for smart-home devices and smart appliances
- Qualified by Amazon to use
AlexaVoice Service Integration for AWS IoT Core for MCU devices
- All-in one design kit with far-field audio detection, local Amazon “Alexa” Wake Word, and connectivity to AVS Integration for AWS IoT Core
AVS Integration for AWS IoT Core has the ability to transform the way users interact with smart “things,” bringing cloud-based
ST’s Amazon-qualified solution jump-starts the design of
“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
Further Technical Information
Unlike other devices commonly used for
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.
“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
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.
Further simplifying prototyping and development, the reference design hardware includes an audio daughter board as a separate module. This contains an ST FDA903D audio codec, user LEDs and buttons, and two MP23DB01HP MEMS microphones spaced at 36mm for size-constrained products such as power switched plugs. The hardware’s modularity lets users implement a custom daughter board if application-specific mic spacing, acoustics, and user-interface definitions are needed.
The reference design includes fully developed software that provides the features needed to support
- Audio-capture software
- Advanced Audio Front End (AFE) with noise reduction, echo cancellation and advanced beam-forming signal processing for far-field audio detection
- Amazon “Alexa” Wake Word
- Connectivity to AWS IoT
- Audio output software
Working with this reference design enables product designers to certify new end products with AVS faster and more easily than bringing up the entire system independently. Both the hardware and software content can be easily adapted to support individual customers’ new-product concepts.
The bill of materials (BOM) for the reference design is engineered to be less than
You can also read a blogpost at https://blog.st.com/alexa-voice-service/
* STM32 is a registered and/or unregistered trademark of
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Tel: +1 781 591 0354
Nov 17 2020-- STM32 AlexaIoT ref design_FINAL FOR PUBLICATION_AMENDED
Nov 17 2020-- STM32 AlexaIoT ref design_IMAGE
Source: STMicroelectronics N.V.