@ DerekR #62
I based on your real AudioGrabber256 example posted in your #62 to make up a Teensy Sketch, together with 2 x "arm_rfft_fast_f32" and 2 x "arm_cmplx_mag_f32", all set to fft256. The sketch seems to work ok in Teensy 4.0, however when I was trying to test the performance of the sketch, I found a problem.
Firstly, I used the AudioSynthNoiseWhite library. However, the sketch only gave one set of result and stopped. After loading the sketch, the Teensy auto loader stopped auto load and every time after that I have to press the manual loading button. I tried a lot of time trying to identify the problem, but not successful.
I finally tried to use the AudioSynthNoisePink library and AudioSynthWaveformSine library instead. Surprisingly, both of them work ok with my sketch. Not even affecting the auto loader.
Since the sketch works with both AudioSynthNoisePink and AudioSynthWaveformSine but not with AudioSynthNoiseWhite, I therefore suspected there is a bug in the AudioSynthNoiseWhite library. I should be grateful if you could have a look. If you also found the same problem, please consider reporting to Paul for his attention.
Thank you very much for your patience.
LoShu