Request - port for nrf52840 nordic semiconductor chip

[lambtor]

Is your feature request related to a problem? Please describe.
I'm looking for a way to generate a reliable FFT from a PDM with minimal noise. I'd also like a way to get decibel measurements using the MP34DT05 on the Arduino Nano 33 BLE Sense.

Ideally the ArduinoSound library would be ported over to the nrf52840 chipset?

Describe alternatives you've considered
The PDM reading examples provided give a wave value, but I haven't been able to locate documentation for translating the read values into a reliable decibel reading.

Additional context
What are the roadblocks to porting the library?