NXP i.MX 8M Mini Pico-Pi AVS and ACM

NXP i.MX 8M Mini Pico-Pi AVS and ACM

Enable voice calling on smart speakers, sound bars and smart home appliances using Voice activation with a combination of 4 mic TalkTo and 1 mic Talktogether. Using DSP Concepts' ACM qualified front end, the NXP i.MX 8M Mini Pico-Pi ACM and AVS reference design eliminates transmit and receive echo with low latency to provide natural voice experience. Combined with our high performance, AVS FFRS v2.1 qualified TalkTo Voice UI, this NXP design reduces tuning and certification costs with product-ready algorithms.

Extend the TalkTogether design to meet Microsoft Teams or Zoom certification with multi-mic TalkTogether configurations including fixed or adaptive Beamformer, Direction of Arrival (DoA) and advanced noise reduction for seamless audio conferencing.


High quality, full duplex voice communication

  • Robust to double talk, acoustic echo and distortions
  • 50+ dB echo cancellation together with AEC and Residual echo suppressor

Flexible Tuning Options

  • 1-mic TalkTogether with advanced tuning options to trade-off between AEC and speech quality

Integrated Alexa voice service with 6 mic TalkTo

  • Seamlessly add Alexa to your product to activate by voice from 5m+ range

Reduce tuning and certification risks and costs

  • Optimized production ready algorithms
  • Expedited hardware validation using Real-time Analysis and System Check (RTASC)

Rapid prototyping and accelerated product development

  • Embedded Audio Weaver Core and Audio Weaver Designer interface with drag & drop programming environment

Audio Front-end Features

DSP Concepts’ 1-mic TalkTogether for natural, distortion-free speech

  • • Acoustic Echo Canceller together with Residual Echo Suppression for full duplex voice quality
  • • Single Channel Noise Reduction (SCNR) to eliminate stationary noises such as fan noise, HVAC, etc.
  • • Tx Automatic Gain Control (AGC) for optimal hearing at the far-end
  • • Receive Equalization and volume control for improved speech quality in receive direction

DSP Concepts’ TalkTo for excellent far-field performance in noisy environments

  • • 6-mic adaptive 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
  • • 30+ dB Acoustic Echo Cancellation (AEC) for excellent barge-in performance

Stereo Audio Playback processing

Software Integrations

Software Integrations - Audio Weaver Designer
Audio Weaver Designer
Drag-and-drop graphical tool to customize and tune audio processing models in real-time with 500+ modules
Software Integrations - Audio Weaver Core
Audio Weaver Core
Embedded audio processing engine for Cortex A53
Software Integrations - TalkTo
DSP Concepts’ TalkTogether audio front-end for full duplex voice calls
Software Integrations - TalkTo Voice UI
TalkTo Voice UI
Noise reduction, echo cancellation and advanced beam-forming signal processing for far-field voice activation
Software Integrations - Stereo audio playback processing
Stereo audio playback processing
Software Integrations - TrulyHandsfree Alexa
Sensory TrulyHandsfree ‘Alexa’ wake word engine

Hardware Specifications


  • i.MX 8M Mini Quad core application processor
  • 4x Arm® Cortex®-A53 Core @ 1.8 GHz
  • 1x Arm® Cortex®-M4 @ 400 MHz


  • 32-bit LPDDR4 w/2 GB
  • eMMC 5.0/5.1 w/16 GB
  • SD/MMC connector
  • QSPI w/32 MB

Audio I/O

  • Audio DAC 24-bit 192 kHz stereo
  • HP Jack 3.5 mm audio connector
  • Board expansion connector for audio interfaces


  • 10/100/1000 Ethernet
  • USB 3.0 Type C connector
  • PCIe M.2 interface

Included with the demo kit

  • i.MX 8M Mini Pico Pi Evaluation kit with i.MX 8M Mini Quad core processor
  • DSP Concepts’ 6 mic Circular array board
  • Voice UI and Voice Communication QuickStart Bundle: Everything you need to know to design voice products, including design guidelines, microphone placement, Audio Weaver Designer layout files (.AWD), and tools to get started.
  • USB cables
diagram (3)

Ready to get started?