Mechanical Transduction Standard for Percussive Instruments
noduck_piezo is a mechanically stabilized piezoelectric transduction system designed to improve low-frequency response, transient accuracy, and strike consistency in contact-based percussion sensing.
It replaces adhesive-mounted piezo elements with a rigid, mass-loaded assembly and a high-impedance buffer stage.
- Improve low-frequency response
- Reduce mechanical variance between strikes
- Increase transient clarity and repeatability
- Preserve signal integrity via high input impedance
1. Mechanical Coupling
35mm brass-backed piezo mounted in a rigid, mass-loaded housing to stabilize vibration response.
2. Structural Interface
Direct rigid coupling to the instrument surface reduces energy loss and improves strike-to-signal consistency.
3. Buffer Stage
Discrete JFET buffer (10MΩ input impedance) isolates the piezo from ADC loading effects.
- Piezo → JFET buffer (high impedance)
- Buffered output → ADC (3.3V protected)
- Optional Zener clamping for overvoltage protection
- Acoustic percussion instruments
- Hybrid electroacoustic systems
- Experimental contact microphone systems
Not a full audio processor — this is a transduction front-end.
Piezo performance limits are primarily mechanical, not computational. This system addresses the constraint at the physical interface layer.