NXP i.MX 8M Pico-Pi Sound Bar

NXP i.MX 8M Pico-Pi Sound Bar

High-performance home audio products with multi-channel playback need multichannel Acoustic echo cancellers to achieve accurate trigger detection during music barge-in. NXP i.MX 8M Pico-Pi Sound bar reference design integrates 3.1 channel playback processing together with TalkTo multichannel AEC and Adaptive Interference Canceller (AIC) running on one of the i.MX 8M Arm® Cortex®-A53 cores to provide far-field voice activation up to 6m+. The reference design can be extended up to 7.1 channel playback with the corresponding multi-channel AEC algorithms from DSP Concepts.


Seamlessly integrate Alexa to your product

  • High performance 6 mic TalkTo for 6m+ far-field voice activation range
  • Excellent trigger detection without compromising on false wakeups
  • Excellent music barge-in with 3.1-ch AEC

High fidelity multi-channel audio playback

  • 3.1 channel playback processing with Equalizer, multi-band speaker protection and volume management algorithms

Rapid prototyping and accelerated product development

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


Audio Front-end Features

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
  • • 3 channel Acoustic Echo Cancellation (AEC) for excellent barge-in performance during multi-channel playback

Playback IP for multi-channel audio processing

  • • 2-ch to 3.1-ch Up mixer
  • • Per-channel Equalizer and time alignment
  • • Multiband Speaker Protection
  • • Volume Management w/ Perceptual Loudness control

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 Voice UI
TalkTo Voice UI
Noise reduction, echo cancellation and advanced beam-forming signal processing for far-field voice activation
Software Integrations - Sensory TrulyHandsfree
Sensory TrulyHandsfree ‘Alexa’ wake word engine
Software Integrations - 3.1 Channel audio playback
3.1 channel audio playback

Hardware Specifications


  • i.MX 8M Mini Quad core application processor
  • 4x Cortex-A53 Core @ 1.8 GHz
  • 1x 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 QuickStart Bundle: Everything you need to know to design voice-enabled home audio products, including design guidelines, microphone placement, Audio Weaver Designer layout files (.AWD), and tools to get started.
  • USB cables
NXP i.MX8M Pico-Pi Diagram

Ready to get started?