I try to implement some kind of "strobe" for FFT.
Teensy 3.6 Audio FFT process arriving data From Audio board - block after block.
As far as I understand - FFT start when all 1024 readings are ready and then fill data block with new readings as "old ones" was read.
So - is it possible to change this by some strobe signal or code line to achieve following - after strobe 1024 data readings take place and stop, then FFT computation and wait till next strobe pulse. Or in other words - the ADC must start to read a block of data always at the same point of periodical signal. At zero-crossing, for example.
Any ideas? Thanks in advance!
Teensy 3.6 Audio FFT process arriving data From Audio board - block after block.
As far as I understand - FFT start when all 1024 readings are ready and then fill data block with new readings as "old ones" was read.
So - is it possible to change this by some strobe signal or code line to achieve following - after strobe 1024 data readings take place and stop, then FFT computation and wait till next strobe pulse. Or in other words - the ADC must start to read a block of data always at the same point of periodical signal. At zero-crossing, for example.
Any ideas? Thanks in advance!