Here are my first attempts at Closed and Open Hat patches:
p3_s6OHH.s6 (35.6 KB)
p2_s6CHH.s6 (35.6 KB)
The start point for the Open Hi Hat (OHH) is shown below:
The main difference with this and the Closed Hat (CHH) Patch is a shorter Decay Time in ENV2.
The patches are comprised of noise generators on both DDS1 and DDS2, with a tonal element provided by LFO 1 in HF (non-tracking) mode. The waveform used is a user waveform copied from DDS1 using the ‘battwave’ modification trick discussed in the manual, outputting the result on DDS2, but any tonal waveform rich in harmonics should work just as well. The MIX between DDS1 and DDS2 is set to around 9 o’clock.
Envelopes:
ENV2 has zero attack and sustain, with moderately short release and decay phases, with the Decay stage modulated positively by ENV1 for a slightly more convex profile. ENV1 has a moderate sustain level and release phase, with its Decay phase modulated by ENV1 itself to create a more concave profile.
Filters:
The filter is in Band Pass mode with a very high HPF cutoff. VCF Freq is set to around 85%, providing a small window for the Envelopes to work within. The DRIVE is set to level 2, and there is a high amount of RESonance
Modulation
ENV1 acts on the MIX positively to add more of the tonal element to the transient. ENV1 also positively modulates ENV2 Decay by around 50% for the OHH, and by 25% in the CHH
Here’s an example of both the CHH and OHH without external processing:
I love sound design but do struggle sometimes. I think your patches really show what Udo’s synths are capable of, other than the associated pad type sounds that sometimes pigeonhole Udo’s products, especially the Super G.