Assuming a typical audio encoding, each time around the loop the new sample value is added (arithmetic add) to the previous value, not bitwise OR. The mean valu

Assuming a typical audio encoding, each time around the loop the new sample value is added (arithmetic add) to the previous value, not bitwise OR. The mean value of a sample is zero, so you can do this forever. (Idealized. In practice you actively normalize to avoid overflow/clipping).