Ambiq Wearable

AVS-qualified TalkTo brings power optimized, highly accurate wake word detection to the industry's lowest power MCUs in the Ambiq wearable reference design. Significantly reduce false positives while still meeting the battery life requirements on small, wearable devices.


  • Near-field always-on, always-listening solution
    • DSP Concepts high performance TalkTo Audio Front-end
    • Meets AVS 2.1 specification
  • Extended  battery life for wearables
    • Proprietary Quiescent Sound Detector together with environment-adaptive microphone processing 
    • Industry’s lowest power operation enabled with Ambiq SPOT™ (Subthreshold Power Optimized Technology)

Audio Front-end Features

  • DSP Concepts’ TalkTo for excellent far-field performance in noisy environments
    • 2-mic Beamformer with Single Channel Noise Reduction (SCNR)
    • State-of-the-art noise cancellation with Adaptive Interference Canceller (AIC) 
      • No reference signal needed
      • Eliminates 30dB of external noise sources such as background music or a booming movie
    • 35dB Acoustic Echo Cancellation (AEC) for excellent barge-in performance
    • Quiescent Sound Detector (QSD) for wakeup on voice
  • High Performance TrulyHandsfree™ Alexa wake word from Sensory

Software Integrations

  • Audio Weaver Designer: Drag-and-drop graphical tool to customize and tune audio processing models in real-time with 500+ modules
  • Audio Weaver Core: Embedded audio processing engine for Cortex-M4
  • TalkTo Voice UI: Noise reduction, echo cancellation and advanced beam-forming signal processing for far-field voice activation
  • TrulyHandsfree Alexa wake word

Hardware Specifications

  • Kit Hardware
    • Ambiq Apollo3 Blue Plus EVB
    • mikroBUS Audio Shield
    • Two DMIC Click boards
  • Processor
    • Ambiq ultra-low power Apollo3 Blue Plus MCU
    • 32-bit ARM Cortex-M4F MCU
    • 48/96 MHz TurboSPOT clock frequency
  • Memory
    • 2 MB flash and 768 KB SRAM
  • Audio I/O
    • PDM dual interface for mono and stereo audio microphones
    • Click board with Vesper VM3011 ZeroPower Listening microphone with 2 VM3000 Mics or Click board with 3 Memsensing Mics
  • Connectivity
    • Integrated BLE 5 wireless connectivity

Included with the demo kit:

  • Ambiq Voice-on-SPOT™ SDK
  • Voice UI QuickStart Bundle: Everything you need to know to design voice enabled wearables , including design guidelines, microphone placement, Audio Weaver Designer layout files (.AWD), and tools to get started.

Ready to get started?

Schedule time to speak with one of our audio experts.