Guitar Vibrations

Guitar VibrationsAdam Kempton akempton@jcu.edu

Eric Moon moon_eric@hotmail.com

under Prof. Steve Errede

Overview• Quick review of previous talk

• What we’ve done since, including data

• What could be done to develop and

improve method

Data Acquisition (DAQ) Setup

HP 3562A Dynamic Signal Analyzer

Transmit

Receive

Op Amp

Random Noise

White Noise Setup

eBay is great!

White Noise

Cross Spectrum ofGibson J-45 w/ Receive below Transmit

90 Hz

208 Hz

145 Hz

368 Hz

90

140185

211

363427

DAQ data of Vtotl vs. Freq w/ receive below transmit

Limitations!• Piezo transducers are 3.7 cm in diameter…too big!

• Suspending guitar can be tricky…does not hang the

same way twice

• Time constraints

Developments• Calibration of piezo transducers- correlating voltage

with space to develop plots w/ space dimensions as

z-axis

• Map out using more points with smaller transducers

• Understand better the DAQ graphs

• Laser Holography?

Acknowledgments

Prof. Steve Errede

Prof. Lee Holloway

Jack Boparai

Contact Information

Adam Kempton akempton@jcu.edu

Eric Moon moon_eric@hotmail.com

Last but not least….

Thank you Nicole Drummer for making this a fun experience!