VocalFusion Stereo Kit for Amazon AVS

VocalFusion Stereo Dev Kit for Amazon AVS

VocalFusion 4-Mic Kit for Amazon AVSStereo-AEC

  • Evaluation board based on xCORE XVF3500 voice processor
  • 4-Mic linear array with 33mm spacing
  • True stereo-AEC
  • Exceptional far-field voice capture with advanced voice DSP
  • Qualified by Amazon for the Alexa Voice Service

The kit features a compact four-microphone linear array, that enables developers and OEMs to add far-field voice capture to stereo consumer electronics and IoT products. The linear design is optimised for integration into set-top boxes, TVs, soundbars, digital media adaptors and other stereo audio and visual consumer electronics.

The voice signals are captured by the microphone array even in noisy environments, enabling commands to be accurately processed and passed to the Alexa client running on a system processor.

What's in the box?

unboxing video

XVF3500 processor board

  • XVF3500 voice processor
  • Low jitter clock source
  • DAC with integrated headphone amplifier
  • USB bus powered

Linear microphone array card

  • 4x PDM MEMS microphones
  • 33.33mm inter-mic spacing


  • xTAG debugger
  • USB cable x2 + ribbon cable + RPi interface cable

Detail: XVF3500 stereo-AEC voice processor

  • Voice processor for far-field voice capture applications, with integrated Voice DSP, includes:
    • 4 microphone adaptive beamformer
    • Full-duplex stereo-AEC with barge-in support
    • Dereverberation, noise suppression, gain control
  • 4-mic digital microphone interface
  • I2S serial audio interface + I2C serial control interface
  • High speed USB2.0 compliant device

You will also need: Raspberry Pi 3 and other peripherals detailed in Getting Started Guide