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REALSIMPLE Basic Virtual Acoustic Guitar Lab

Nelson Lee and Julius O. Smith III

RealSimple Project ²
Center for Computer Research in Music and Acoustics (CCRMA)
Department of Music, Stanford University
Stanford, California 94305

Abstract:

This is the REALSIMPLE lab on estimating parameters for a physics-based guitar model from measurements from your own guitar! We discuss various components of a physics-based model, and methods for measuring these components and estimating parameters for corresponding model components.

Introduction
Setting Up
- Required Software
- Required Hardware
Record a Note From Your Guitar
The String Model
- Using the Energy Decay Relief (EDR)
- Designing the loop filter for your guitar model
  - Fitting Filters in Matlab
  - Viewing Magnitude Responses of the Fitted Filters and the Original Signal
Computing the Excitation Signal
Finding the Desired Gains of the Loop Filter for Individual Frequencies
- The Fundamental Frequency
- Other harmonics
Conclusions
Bibliography
About this document ...

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``REALSIMPLE Basic Virtual Acoustic Guitar Lab'', by Nelson Lee and Julius O. Smith III,
REALSIMPLE Project — work supported by the Wallenberg Global Learning Network .
Copyright © 2008-06-05, by Nelson Lee and Julius O. Smith III
Center for Computer Research in Music and Acoustics (CCRMA), Stanford University