I was wondering, if there are any Android phones out there, capable of recording sound with a frequency higher than 20 kHz or even 22kHz.
According to Nquist you need twice the sampling rate for storing the data. I managed to record audio with a sampling rate of 192kHz on a Samsung S5 mini. But in audacity I can see the recorded audio data stops above 22kHz
Audacity S5 Mini Audio Record wav screenshot
Any clue? Is the limitation the microphone?