University of Illinois Urbana-Champaign

Acoustic modelling through optical modulation and post processing

Martini, Amr

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https://hdl.handle.net/2142/97869

Description

Title
Acoustic modelling through optical modulation and post processing
Author(s)
Martini, Amr
Contributor(s)
Popescu, Gabriel
Issue Date
2017-05
Keyword(s)
  • acoustic modeling
  • acoustic simulation
  • synthetic sound
  • optical modulation
  • acoustic sensing
Abstract
The field of acoustic modelling is split into two major categories: simulation and sensing. Acoustic simulation works directly with physical first principles and has many important applications in mechanical systems simulations and the production of synthetic sounds. Acoustic sensing is the direct measurement of acoustical properties, and its most well-known application is audio recording. This thesis develops and compares multiple techniques to perform acoustic sensing based on optical modulation, specifically to sample the mechanical vibration of a stringed instrument. The optical signal is sampled and demodulated and then further processed digitally using methods in acoustic simulation to compensate for unwanted effects. Each technique offers its own set of challenges and drawbacks, so to overcome these challenges, a hybrid solution is proposed that could offer better performance with a slight increase in overall complexity of the system.
Type of Resource
text
Language
en
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http://hdl.handle.net/2142/97869

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