Hello all,
I'm using Basys3 board and two pomdMic3 devices to read and analyze sound data. I played sound source of specific frequencies (generated by Matlab) to these two pmodMic3. The SCLK of pmodMic3 were set as 5MHz, and one sample(for each mic) of data would be sent to PC every 400ns. Then I exported the captured data and converted to decimal, and I got the following results:
Test 0: In this test, I played a sound source of 1kHz, first 75dB for 4s, then 110dB for 4s, then 75dB for 10s, and I got the result (simply converted binary data captured from pmodMic3 directly to decimal)