Voice Changer

[CapnWinky07]

Hello all! With halloween around the corner I decided to try this project:

https://www.raspberrypi-spy.co.uk/2017/ ... y-pi-zero/

Everything works as expected accept for about a couple milisecond delay. Does anyone know of a way to do real time audio? That is, when I speak into the mic it comes out of the speaker at the same time?

[epoch1970]

0 delay is impossible, your voice has to be digitized then some signal processing is applied and signal is converted back to analog for the speaker. All this takes time.
Perhaps you can reduce the value for the "buffer" parameter in sox? E.g. 1024 instead of 2048.