Hello dear Forum members,
i have an idea for an algorithm i want to realize at an uni-project. And i would like to know what you guys think about it before starting.
I've seen a thread regarding FFT support for teensy 4.0 in this forum. Paul Stoffregen posted a segment of code there which should give the FFT spectrum of an audio signal which is beeing sent through PIN 2 of Teensy 4.0 or Teensy 4.1.
So that made me think ... could there be a way to connect a microphone to PIN 2 and record some audio as a fourier transformation and kind of save it as a sample ... and then make another recording and start to compare the discrete frequencies with the first recording?
With an algorithm like that you should be able to do some kind of voice authentification and i would like to give that project a try.
does someone know the FFT code origin from Examples>Audio>FFT? I would need to sweep through the spectrum and get a matrix of discrete values for specific discrete frequencies, rather than a graphical result for a spectrum analyser.
Furthermore: has someone an idea on how to evaluate the data recorded in recording 1 and recording 2?
Any help or suggestions about this would be highly appreciated
with kind regards,
Mala
i have an idea for an algorithm i want to realize at an uni-project. And i would like to know what you guys think about it before starting.
I've seen a thread regarding FFT support for teensy 4.0 in this forum. Paul Stoffregen posted a segment of code there which should give the FFT spectrum of an audio signal which is beeing sent through PIN 2 of Teensy 4.0 or Teensy 4.1.
So that made me think ... could there be a way to connect a microphone to PIN 2 and record some audio as a fourier transformation and kind of save it as a sample ... and then make another recording and start to compare the discrete frequencies with the first recording?
With an algorithm like that you should be able to do some kind of voice authentification and i would like to give that project a try.
does someone know the FFT code origin from Examples>Audio>FFT? I would need to sweep through the spectrum and get a matrix of discrete values for specific discrete frequencies, rather than a graphical result for a spectrum analyser.
Furthermore: has someone an idea on how to evaluate the data recorded in recording 1 and recording 2?
Any help or suggestions about this would be highly appreciated
with kind regards,
Mala