Using both pulse waves to create an echo effect (like Shadowgate), I've been trying out different combinations of Pxx and 4xx to produce a harmonizing sound, while not trying to sound too off-pitch.
I'm also trying to avoid a robotic-like consistency all around.
So sometimes I'll have Pulse1 be P7F and Pulse2 be P80. Then during a long note have Pulse1's vibrato gradually do something like 441, 461, then 481 on every even row while Pulse2 will go like 431, 451, 471 on every odd row.
Any suggestions?
I made this experimental cover of a Gregorian chant (if it helps), trying to simulate the vibrato of a person's voice.