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.

Benefits

  • 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

  • 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-A53
  • TalkTo Voice UI: Noise reduction, echo cancellation and advanced beam-forming signal processing for far-field voice activation
  • Sensory TrulyHandsfree ‘Alexa’ wake word engine
  • 3.1 channel audio playback

Hardware Specifications

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

Ready to get started?

Schedule time to speak with one of our audio experts.