KEY FEATURES
XVF3000 processor
o Programmable multicore voice processor
for far-field voice capture applications
o Integrated Voice DSP processing includes:
4-microphone adaptive beamformer
Full-duplex Acoustic Echo Cancellation
(AEC) with barge-in support
Dereverberation, noise suppression,
Automatic Gain Control (AGC)
o 4-mic digital microphone interface
o Inter-IC Sound (I
2
S) audio interfaces
o Inter-Integrated Circuit (I
2
C) serial control
interface
o High speed USB2.0 compliant device
Multi-channel USB Audio Class 1.0
o Integrated 2048KB flash
o 128-pin TQFP package 0.4mm pitch
XVF3000 processor baseboard
o XVF3000 voice processor
o Low jitter audio clock source
o DAC with headphone amplifier
o USB bus powered
Linear microphone array card
o 4x PDM MEMS microphones
o 33.33mm inter-mic spacing
The xCORE VocalFusion 4-Mic Kit for Amazon
AVS enables developers of smart home products
to evaluate and prototype far-field voice
interfaces using the Amazon Alexa Voice Service.
Built around XMOS’ XVF3000 voice processor,
the VocalFusion 4-Mic Kit for Amazon AVS
provides embedded far-field voice capture and
processing. With direct interfacing to a linear
array of four digital microphones, the
VocalFusion 4-Mic Kit for Amazon AVS (together
with a Raspberry Pi) is an ideal platform for
developers who want to integrate Alexa into
smart panels, kitchen equipment, and other
commercial and industrial electronics.
Enabling voice control of devices located several
meters from the user requires addressing the
challenges of distance, isolation, noise and
directivity, whilst also enhancing the clarity of the
captured voice. The XVF3000 achieves this using
an adaptive beamformer in combination with
full-duplex echo cancellation and noise
suppression to locate the desired speech source
and effectively isolate voice commands from any
audio the device is playing while suppressing
background noise and room echoes.
Getting started with xCORE VocalFusion 4-Mic
Kit for Amazon AVS couldn’t be easier, find out
how at www.xmos.com/vocalfusion-avs.
