NXP Semiconductors
Document Number: IMX8MAVSUG
User's Guide
Rev.
2
,
01/2019
User's Guide for NXP i.MX 8M Development
Kit for Amazon AVS
1. Introduction
The NXP i.MX 8M Development Kit for Amazon
Alexa Voice Service (AVS) enables its wide customer
base to easily integrate Alexa into their next generation
design based on i.MX processors. The development kit
consists of a 2-Mic array and the Pico i.MX 8M
development kit, both optimized to deliver a low cost
but flexible design to enable fast development to
production.
To enable customers to deliver a high-quality audio
experience we have partnered with DSP Concepts for
audio algorithms including echo cancellation, beam-
forming, and noise reduction to be delivered in
software. This results in a single chip solution, lowering
overall design cost, while ensuring customers to have
the support and expertise needed to deliver a high-
quality user experience in a short development time.
Contents
1. Introduction ........................................................................ 1
2. What’s in the kit ................................................................. 2
3. Amazon account setup ....................................................... 4
4. Hardware setup .................................................................. 9
5. Flash the board ................................................................. 12
6. Install Alexa SDK ............................................................ 15
7. Running sample AVS App ............................................... 26
8. Download MRM packages ............................................... 29
9. Testing MRM ................................................................... 34
10. Enable auto start of Alexa sample .................................. 44
11. Testing audio ................................................................. 46
11.1. Testing audio with DSPC ..................................... 46
11.2. Testing Audio without DSPC (or before executing
setupAVS.sh) ..................................................................... 47
12. References ..................................................................... 48
12.1. Support ................................................................. 48
12.2. Key terms ............................................................. 48
12.3. Speaker references ................................................ 48
12.4. Ordering information and web links ..................... 48
© 2018 NXP B.V.
What’s in the kit
User's Guide for NXP i.MX 8M Development Kit for Amazon AVS, User's Guide, Rev. 2, 01/2019
NXP Semiconductors
2
2
This user’s guide provides step-by-step instructions for setting up the development kit and accessing and
testing Amazon AVS including account, hardware and software setup. When finished, you will have a
fully functioning prototype with Alexa built-in that uses the TechNexion Voice Hat 2-Mic Development
Kit as an audio front end, and the PICO-PI-IMX8M development board as the processor handling the
Alexa wake word recognition and interface to Amazon AVS.
The NXP i.MX 8M Development Kit for Amazon AVS is available on
https://www.amazon.com/dp/B07HBB1L5K and https://shop.technexion.com/pico-pi-imx8m-
alexa.html.
2.
What’s in the kit
Figure 1. NXP i.MX 8M development kit for Amazon AVS components
NOTE
Antistatic precautions are recommended for assembling the kit.