audio - Electronic stethoscope / contact mic not quite working - Electrical Engineering Stack Exchange
Building your own Piezo-Preamp – The Center for Haptic Audio Interaction Research
Several Piezo contact mics with Arduino - Arduino Stack Exchange
Acoustic Guitar Pickup circuit & Wireless using TL071 | ElecCircuit.com
A 5-channel mixer / preamplifier for piezo disks by Godfried-Willem Raes
operational amplifier - What is a good circuit for recording a piezo contact microphone or an electric guitar pickup? - Electrical Engineering Stack Exchange
Microphones
contact microphone preamp buffer - MOD WIGGLER
A 5-channel mixer / preamplifier for piezo disks by Godfried-Willem Raes
Simple Contact Microphone
Collin's Lab: DIY Contact Mic - Make:
DIY piezo preamp with hi-pass filter – breaks.berlin
The Mint-box Piezo Buffer
Simple Contact Microphone
Guitar Contact Microphone Preamp : 7 Steps - Instructables
Alex Rice Piezo Preamplifier – Zach Poff
Increase piezoelectric transducer acoustic output with a simple circuit - EDN
Piezo contact microphone hi-Z amplifier – low noise version – Richard Mudhar
Piezo Preamps
Piezoelectric Transducer: Applications & Working Principle | Electrical4U
Make this DIY Contact MIC Circuit | Homemade Circuit Projects
Piezo Preamp Experiment - Cigar Box Nation
How to Build a Microphone Amplifier Circuit
Guitar Contact Microphone Preamp : 7 Steps - Instructables
Simple Microphone to Speaker Amplifier Circuit Diagram
