title: A tone analyzer based on a piezoelectric polymer and organic thin film transistors.
abstract: A tone analyzer is demonstrated using a distributed resonator architecture on a tensioned piezoelectric polyvinyledene diuoride (PVDF) sheet. This sheet is used as both the resonator and detection element. Two architectures are demonstrated; one uses distributed, directly addressed elements as a proof of concept, and the other integrates organic thin film transistor-based transimpedance amplifiers directly with the PVDF to convert the piezoelectric charge signal into a current signal. The PVDF sheet material is instrumented along its length, and the amplitude response at 15 sites is recorded and analyzed as a function of the frequency of excitation. The determination of the dominant component of an incoming tone is demonstrated using linear system decomposition of the time-averaged response of the sheet and is performed without any time domain analysis. This design allows for the determination of the spectral composition of a sound using the mechanical signal processing provided by the amplitude response and eliminates the need for time-domain downstream signal processing of the incoming signal.
authors.affiliation: Department of Electrical Engineering, Columbia University, New York, New York 10027, USA. yh2216@columbia.edu
authors.forename: Yu-Jen
authors.initials: YJ
authors.lastname: Hsu
authors.forename: Ioannis
authors.initials: I
authors.lastname: Kymissis
mesh_terms: D000162:Acoustics / Q000295:instrumentation*; D004867:Equipment Design; D016014:Linear Models; D011145:Polyvinyls; D012815:Signal Processing, Computer-Assisted; D013016:Sound; D013018:Sound Spectrography; D013997:Time Factors; D014173:Transistors, Electronic; D014732:Vibration; D005465:Fluorocarbon Polymers
chemical_list: D011145:Polyvinyls; C024865:polyvinylidene fluoride; D005465:Fluorocarbon Polymers