Microphones not working for Alexa project

I ran through the directions at: https://matrix-io.github.io/matrix-documentation/Demos/Alexa/
everything seems to be fine except the microphone(s) do not appear to pick up my voice.
with or without using the wake word and the listen button.

The mic_energy demo seems to work but not the other mic demos.

Hi @Flynnprgmmr,

This is a weird behavior regarding the mics, can you shared more details on the not working mic demos?
Were you able to record with the micarray_recorder.cpp demo?


No I wasn’t.
The device is definitely associated with the Alexa service as I was able to use the iphone app and start music to play on/through the device.

I have the same problem - does anyone have a solution?
Alexa set up and connected, terminals look OK, I can play from the iPad app, but the microphones are not recording sound.
If I click the Listen button I get a beep, but it still does not take sound input.

I have the same problem too :persevere: used the https://matrix-io.github.io/matrix-documentation/Demos/Alexa/ guide, but only get noise when trying the mic record and the alexa service does not respond to either button or voice.

I am in the same situation. I only see D48 blinking and one solid LED on the back side and no mics are working?