Sound board's Frequency Response Analysis of Classical Guitars

Visualizações: 78

Authors

DOI:

https://doi.org/10.33871/23179937.2023.11.2.7762

Keywords:

Classical guitars, Fourier transform, Continuous wavelet transform, Signal processing

Abstract

The instrument's sound quality assessment is an arduous task to be performed computationally. This work aims to compare high-quality sound characteristics among instruments. The impulse response of the guitar is recording in the time domain and, by means of the Fourier and Continuous Wavelet Transforms the characteristics among high-quality guitars, in the frequency domain, are shown. To discriminate high quality, through experimentation, the criteria are: 1) tuning of notes, sound projection and definition of notes; 2) sound balance at all frequencies and timbre. Comparison of the frequency response (intensity, density, shape, range) gives a good intuition regarding sound quality of the instruments that shares similar characteristics, according to the criteria defined. Note that, among the high-quality classical guitars, it is not possible to define what is better sound-wise due to the fact that high-quality instruments are hearing-perceptual defined, therefore, depends on the criteria of the musician.

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Author Biographies

Milton Ernesto Romero Romero, Universidade Federal de Mato Grosso do Sul

Milton Ernesto Romero Romero holds a postdoctoral position at the Autonomous University of Barcelona, Spain (2011); a Ph.D. in Systemistic Engineering and Computer Science from the University of Rome La Sapienza (1999), Italy; a Master's degree in Electrical Engineering from the Pontifical Catholic University of Rio de Janeiro (1988); a Bachelor's degree in Mechanical Engineering from the National University of Colombia (1982); and a Bachelor's degree in Electronic Engineering from the Pontifical Javeriana University of Colombia (1983). He worked at IBM as a researcher at the scientific center in RJ-Brazil, and at Quadrics in the field of supercomputing in Rome, Italy. Currently, he holds the position of full professor at the Federal University of Mato Grosso do Sul. He has expertise in the areas of Electronic Engineering and Computer Engineering, with an emphasis on Computing Methodology and Techniques, focusing primarily on the following topics: binary and multiple-valued digital circuits, signal processing, Clifford algebras, high-performance computing, parallel computing, and stereoscopic processing.

Rafael Pedrosa Salgado, Universidade Federal de Mato Grosso do Sul\ Universidade do Estado de Santa Catarina

Rafael Pedrosa Salgado is a PhD candidate in Music at UDESC, specializing in creative processes. He earned a Master's degree in Music from UNESP, focusing on musical performance - Chamber Music (2015). He holds a Bachelor's degree in Music - Bachelor of Science from the Faculty of Sciences at FITO (2003), as well as a Bachelor's degree in Music Education from the Faculty of Sciences at FITO (2004). Currently, he serves as a musician-technician at the Federal University of Mato Grosso do Sul.

Evandro Mazina Martins, Universidade Federal de Mato Grosso do Sul

Evandro Mazina Martins received the B.S. degree from the Mackenzie University, Sao Paulo, Brazil, in 1981, and the M.Sc. and Ph.D. degrees from the State University of Campinas, Campinas, Brazil, in 1996 and 1999, respectively. He has been a Professor at the Federal University of Mato Grosso do Sul, Campo Grande, Brazil, since 1989 and Titular Professor since 2015. His research interests include high-speed A/D converter, digital signal processing, multiple-valued logic algebra and quantum computation.

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Published

2023-09-06

How to Cite

Romero Romero, M. E. ., Pedrosa Salgado, R., & Mazina Martins, E. (2023). Sound board’s Frequency Response Analysis of Classical Guitars. Vortex Music Journal, 11(2), 1–31. https://doi.org/10.33871/23179937.2023.11.2.7762

Issue

Vol. 11 No. 2 (2023): Vortex Music Journal

Section

Research Papers

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Copyright (c) 2023 Milton Ernesto Romero Romero, Rafael Pedrosa Salgado, Evandro Mazina Martins

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