so from the manual:
THAT enables CV control over the recording mode. Now we can
explore the inbetween of OVERDUB (0v) and OVERWRITE (-5v).
Consider the difference between these modes is whether we
are erasing existing recorded material as we lay down new
sounds. A point out around -4v will give the effect of an
old tape deck or delay, leaving faint ghosts of recorded
material.
Sounds more complicated than a simple amplitude mixing of the old and new in the buffer. I was wondering if wrMix is related? I canāt really read dsp code, but this line seems curious (hpf?):
dc_step_v( &(mix->hpf), bus2, tmp, mix->b_size);