XCore Exchange

Hello Everyone,
I have two question here and I hope help me for answers:

1- If I want to buy Mic array to use it for Speech Recognition, What is the Mic array products now in market?

2- Why most of devices like Amazon Alexa and Google use MEMS Microphone Array ( Digital PDM Mic) not ?, other hand most robots use electret Microphone Array not MEMS digital Microphone Array?

Many Thanks,

MEMS mics are cheaper and smaller also they are almost always omni-directional. See also:
https://ez.analog.com/thread/11410
http://electronicdesign.com/analog/why- ... technology

Digital mics remove the need for an extra A/D from you system BOM which is a massive advantage for consumer products.

For microphone arrays, there is the solution from XMOS or the following which is also based on the new XMOS processor but assembled in China:

XMOS based microphone array:
https://www.seeedstudio.com/ReSpeaker-M ... -2719.html

Board to allow for speech recognition:
https://www.seeedstudio.com/ReSpeaker-C ... -2716.html



https://youtu.be/FuOkKrdiC50

https://www.youtube.com/watch?v=fqaBuc9qxNg

However, there is a long waiting list. We placed our order around last November and just received our confirmation yesterday that the boards have now shipped.