not correctly rendering low frequencies

[Nicknaem]

Hello, first of all thank you for the vid, I rarely see such detailed content on subject ❤️

I think this visualiser doesnot show low frequencies correctly, I just needed to visualise lower frequencies to see how bass behaves in music.

download this frequency test audio, and test it in your visualiser
https://www.youtube.com/watch?v=PAsMlDptjx8

and then compare it to this, how here is shown
https://www.checkhearing.org/audiospectrum.php

from 5 to - 13 seconds your visualiser just renders low requencies and than starts moving
it kinda groups lower frequencies together until high frequencies come out

[Nicknaem]

oh alright I changed fftSize and now its good, frequency change increases gradually, thats why it wasn't visible when it was too chunked up