Snare 03 Highpass
The signal follows 2 parallel paths.
Path 1: The noise through the filter, then to VCA-A.
Path 2: The oscillators into VCA-B, then to VCA-A.
Further Reading:
SOS: Synthesizing Drums: The Snare Drum
SOS: Practical Snare Drum Synthesis
Moritz Klein : Designing a TR-808 style snare drum from scratch