Large flat stereo microphone array of 24 capsules 25 mm

thingiverse

This is a microphone with high sensitivity and directivity, made of inexpensive capsules from Aliexpress. To obtain a linear frequency response for a balanced subjective feeling of the hall, it is necessary to raise the high frequencies on 6 db. The level at 20 kHz should be 6dB higher than the level at 1 kHz with a steepness of 6 db/oct. The rise starts at 3.5khz.