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Synaptics AudioSmart™ 2-Mic Dev Kit

A Hands-Free Reference Solution for the Alexa Voice Service

Synaptics AudioSmart™ 2-Mic Development Kit for Amazon AVS

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Designed to help you quickly and easily create hands-free audio front end systems for your Alexa-enabled products, this development kit features Synaptics' AudioSmart™ CX20921 Voice Input Processor with a dual microphone board and Sensory's TrulyHandsfree™ wake word engine tuned to "Alexa". Features include:

  • Dual Microphone Hands-Free Voice Interaction with Smart Source Pickup™
  • Low Power Embedded Alexa Wake Word Engine
  • Full Duplex Stereo Acoustic Echo Cancellation (AEC)


This solution is available in two variants:

  • TechNexion pico-imx7d board featuring NXP’s i.MX7D dual-core Cortex A7 processor running a Yocto Linux OS, the TrulyHandsFree Wake Word Engine, and C++ based AVS sample client.
  • Raspberry Pi 3 Model B running the AVS Java sample client as a proxy for production-ready silicon, giving developers flexibility in selecting the SoC solution best suited for their end device.
Build with the Dev Kit
Build with a Production-Grade SoC

Buy the Hardware
Synaptics AudioSmart 2-Mic Development Kit for Amazon AVS and NXP i.MX7D bundle ($375.00). Buy »

Download the Datasheet
Synaptics’ technical documents. Download »
NXP’s technical documents. Download »

Build a Prototype
AVS sample client (C++) and how-to guide for the Synaptics Dev Kit with NXP i.MX 7D. Build »

Build with a Raspberry Pi

Buy the Hardware
Synaptics AudioSmart 2-Mic Development Kit for Amazon AVS ($299.00). Buy »
Raspberry Pi 3. Buy »

Download Hardware Tech Docs
Synaptics’ technical documents. Download »

Build a Prototype
AVS sample client (Java) and how-to guide for the Synaptics Development Kit and Raspberry Pi. Build »

Get Started with AVS