Opens in a new tab

AES E-Library

← Back to search

Convention Paper

Simple Modeling of Soundboard Effect for Piano Transcription

Authors: Beracoechea, Jon Ander; Casajús-Quirós, Francisco Javier; Ortiz-Berenguer, Luis; Perez-Aranda, J.; Torres-Guijarro, Soledad

AES Convention 120 · Paper 6647 · May 2006

Abstract

Partials of piano sounds are inharmonic. This inharmonicity is due either to string stiffness and to soundboard impedance. The last has not been widely documented. Two problems arise: to know the value of the impedance and to evaluate the frequency deviation the partial suffers. In this work, that deviation has been calculated either by using Morse’s equations and by using author’s proposed method. To validate results, deviations for some piano notes have been measured. Besides, the soundboard impedance has also been measured to verify relationship between deviation and impedance. Moreover, a method to evaluate impedance using measured deviations is also proposed. This last method can be useful during training stages in transcription systems and for parameter extraction schemes.

Details

Published in
AES Convention 120
AES Convention
120
Paper number
6647
Publication date
May 6, 2006
Session subject
Analysis and Synthesis of Sound; Mobile Phone Audio; Automotive Audio
Affiliation
Universidad Politecnica Madrid (See document for exact affiliation information.)
Type
Convention Paper