mhelin
Well-known member
This is the AD AN-1382, they used 2x16 MEMS omni microphones (analog) to create cardioid "studio quality" microphone by delaying the other group of 16 mic modules spaced 18mm from each other:
https://www.analog.com/media/en/technical-documentation/application-notes/AN-1328.pdf
74 dBA SNR is not that good. Anyway, the MEMS mics are high-volume parts and under fast development, there are tens of studies and papers about how to improve the technology. Several I found tried to apply positive feedback to improve SNR at lower bias voltage which was kind of interesting subject. Just google "mems positive feedback" for those ones. I guess the threory can be applied to conventional condenser capsules and head amps as well.
https://www.analog.com/media/en/technical-documentation/application-notes/AN-1328.pdf
74 dBA SNR is not that good. Anyway, the MEMS mics are high-volume parts and under fast development, there are tens of studies and papers about how to improve the technology. Several I found tried to apply positive feedback to improve SNR at lower bias voltage which was kind of interesting subject. Just google "mems positive feedback" for those ones. I guess the threory can be applied to conventional condenser capsules and head amps as well.