Here is a waveshaper circuit that produces two pulses per wave cycle. The pulses have the same (voltage-controlled) width. The second pulse has variable position and amplitude, both under voltage control.
Its main documentation is in this file: 
doc link
Here is a video demo of some of waveshaper's capabilities.
And here is a short audio clip from a patch with just a Saw VCO followed by the DPWG and a VCA, all under control of the Stealth analog wind controller: DPWGII demo 01