3

Almost all smart speaker use omnidirectional MEMS microphones. They are small, good and inexpensive. Something like this perhaps: https://www.digikey.com/product-detail/en/knowles/SPW0690LM4H-1/423-1423-1-ND/8573349 You won't find these with a USB interface, they are either analog, PDM and in rare cases I2S. Keep in mind that smart speakers have multiple ...


2

It is sometimes possible, but not advisable, to transmit from a wireless audio transmitter designed by one manufacturer, to a wireless audio receiver made by a different manufacturer. Cross-manufacturer compatibility is much, much more likely to succeed when both transmitter and receiver are analog wireless ("FM"), and much less likely to succeed when both ...


Only top voted, non community-wiki answers of a minimum length are eligible