Do You Have The Same Problem With 6th String? in James Tyler Variax Guitars / Workbench HD Posted January 27, 2016 "What is clang-tone? Clang-tone, or wolf tone, is a sound inherent in a vibrating string. A string vibrates in three modes: Torsional, Longitudinal, and Transverse. Torsional vibration does not produce a sound wave â€“ it is the string just twisting like a drive shaft in a car. Longitudinal vibration is what the magnetic pickups on a guitar are â€œhearingâ€ and reproducing. Transverse vibration is a wave going up and down the string as it is stretches and relaxes longitudinally. Magnetic pickups do not reproduce Transverse vibration, but it is the type of vibration that a piezo pickup â€œhears,â€ and it produces the clang. Some describe its sound as a â€œpingâ€ or â€œplink.â€ It is there even on acoustic guitars." Edit: in the text are interchanged words Longitudinal and Transverse.