My Research
Acoustic Guitar Science & Publications
At Iulius Guitars, the art of traditional guitar making is harmoniously blended with a rigorous scientific approach. I firmly believe that understanding the intricate acoustic phenomena at play within a guitar allows us to not only honor centuries of lutherie tradition but also to innovate and elevate the instrument’s potential. This research-driven methodology enables the creation of guitars with consistently superior performance, enhanced playability, and a reduced likelihood of defects, all supported by objective data and robust theoretical models.
My dedication to advancing the understanding of guitar acoustics extends beyond my own workshop. Over the years, I have actively contributed to the field through numerous published articles, in-depth tutorials, and scientific papers. As an active member of APLG (Association Professionnelle Luthier Guitare), the esteemed French guitar luthier association, I regularly participate in knowledge exchange, holding conferences and webinars to share insights with fellow luthiers and enthusiasts.
This page serves as a curated collection of my key publications, resources of general interest, and links to some of the most seminal studies in guitar acoustics that I believe are essential reading for any luthier passionate about deepening their craft.
Here you will find a selection of articles, papers, and tutorials I have authored, covering various aspects of acoustic guitar design, measurement, and optimization. These resources aim to share practical insights and theoretical knowledge gained from years of dedicated research and hands-on lutherie.
Survey and evaluation of classical guitar soundboard design methods with finite elements analysis
Quintavalla, Nicoletti, Santini, 2024
In this article, we explore the challenging task of designing guitar soundboards to achieve consistent acoustic properties and structural stability. Since wood is so variable, simply relying on strict measurements isn’t enough for reproducible results. We review and evaluate various existing approaches, from traditional methods to those using material measurements and computer optimization. Additionally, we introduce an original, builder-friendly method based on straightforward mass and stiffness definitions. To thoroughly test these approaches, we use finite element analysis (FEA), evaluating their robustness against variations in wood density and orthotropic stiffness, drawing on experimental data from 29 spruce samples. We assess the results by comparing the consistency of crucial acoustic parameters (like eigenmodes, eigenfrequencies, mass, and monopole mobility) and structural ones (such as soundboard mechanical stiffness and bridge rotation angle). We also examine the correlation between sound radiation and monopole mobility. Ultimately, we evaluate and discuss the practical applicability of each method for luthiers.
Measuring and tuning the performances of the acoustic guitar
Giuliano Nicoletti, 2022
Understand your guitar’s voice like never before! This article, “Measuring and tuning the performances of the acoustic guitar,” explores how objective measurements can help you build and refine instruments with predictable sound and stable structure. Learn about the key acoustic parameters, the importance of accurate data over guesswork, and a simple setup for analyzing your guitar’s unique frequency response. Unlock the secrets to minimizing wolf notes and achieving the perfect tone.
FEM simulations and experimental validation of frequency response prediction for acoustic soundboards
Nicoletti, Ausiello, 2021
Unlock the power of Finite Element Method (FEM) simulations for acoustic guitar design! This article, “FEM simulations and experimental validation of frequency response prediction for acoustic soundboards,” explores how advanced modeling can accurately predict the vibrational behavior of soundboards. Learn how FEM helps optimize bracing patterns, understand wood’s anisotropic properties, and achieve precise acoustic performance, moving beyond traditional methods. Discover how these simulations can become vital manufacturing tools for luthiers aiming for tailored and reproducible instrument responses.
Misura e messa a punto delle prestazioni della chitarra acustica
Giuliano Nicoletti, 2022
In this article, in italian language, I detail my approach to measuring and tuning acoustic guitar performance. I explain why precise data, rather than just intuition, is essential for consistent results. I review existing methods and introduce my own builder-friendly technique, all evaluated using finite element analysis on spruce samples. My aim is to show how objective data can help luthiers achieve reproducible sound and structural stability, effectively managing acoustic parameters like eigenmodes and structural aspects like soundboard stiffness.
Seminal Studies & Essential Reading for the Curious Luthier
In addition to my own work, I believe in building upon the knowledge of the wider scientific and lutherie community. Below is a curated list of influential studies and resources by other researchers and luthiers that have significantly contributed to our understanding of guitar acoustics and construction. These are highly recommended for anyone serious about the technical aspects of our craft.
Mode studies of plucked stringed instruments: application of holographic interferometry
Bernard Richardson, 2010
Engaging with the Research Community
My commitment to research is ongoing. I actively engage with the lutherie and acoustics community through:
- APLG – EGB Membership & Activities: Participating in discussions, conferences, and collaborative projects with The French guitar luthier association.
- Conferences & Webinars: Periodically presenting my findings and learning from others at international events.
- Collaborative Projects: Open to collaborations with researchers, institutions, and fellow luthiers interested in advancing the science of guitar making.
Share, Discuss & Collaborate
The world of guitar acoustics is vast and ever-evolving. I encourage you to explore these resources, share them with others who may find them beneficial, and engage in the ongoing conversation.
If you have questions about specific research topics, wish to discuss acoustic phenomena, or are interested in potential collaborations, please do not hesitate to contact me. I welcome the opportunity to exchange information and experiences with fellow enthusiasts and professionals dedicated to the pursuit of acoustic excellence.