Files in this item

FilesDescriptionFormat

application/pdf

application/pdfECE499-Sp2019-xiao.pdf (3MB)
(no description provided)PDF

Description

Title:Nonlinear analysis of loudspeaker
Author(s):Xiao, Sundi
Contributor(s):Allen, Jont
Subject(s):Impedance
Linearity
2-port Network
Transducers
Admittance
Harmonic Distortion
Maxwell Equation
Thevenin Equation
Abstract:This project developed a measurement system to investigate the behavior of a loudspeaker on a frequency band. This system works with Network-analyzer (MU-Box manufactured by Mimosa Acoustics), a breakout box that handles CH-OUT and CH-IN, and a circuit board driving the impedance load via an amplifier and 7 Volts voltage source. The purpose is to determine characterization and to model nonlinearity of audio speaker by using the speaker harmonic distortion, representation of nonlinearity, to evaluate hypotheses that the pressure of the speaker should be proportional to the current passing through the speaker. Theories used in the measurement include Op-Amp amplifier, Thevenin Equivalent, harmonic observation, Maxwell Equation and 2-port Network. During several experiments, the existing problems include limitation of amplifier and power supply, communication between hardware and software. Chirp and pure tones are used as stimulus to measure impedance and harmonic distortion respectively. The final result verifies the stated hypotheses by the pattern of second harmonic for both pressure and current, which provides significant foundation of future work.
Issue Date:2019-05
Genre:Other
Type:Text
Language:English
URI:http://hdl.handle.net/2142/104046
Date Available in IDEALS:2019-06-19


This item appears in the following Collection(s)

Item Statistics