TY - GEN
T1 - Spectrum characteristics of piano string using non-harmonic analysis
AU - Urabe, Shogo
AU - Hirobayashi, Shigeki
N1 - Funding Information:
Fruitful discussions with V. Lebedev are gratefully acknowledged. This work has been supported by the ?>EU under Contract No. HPRN-CT-2002-00300 and by MIUR-Cofin 2001023848. Numerical simulations have been performed at CINECA (INFM parallel computing initiative).
PY - 2008
Y1 - 2008
N2 - In this paper, we use Non-Harmonic Analysis (NHA), as recently proposed by the author, to analyse the change of frequency of a piano string before tuning. NHA has a high frequency resolution and the influence of the window function is smaller than DFT. The use of A4 for the tuning standard is analysed in the experiment. The observed result is that the variation of the frequency is large before the string is tuned. This is a phenomenon that originates in the way that the vibration of the string combines two large and small elliptic orbits in the direction the string was struck, as was shown by analysis of the string vibration with optical apparatus by Tanaka et al. This paper verifies the change of frequency of the string originating in the elliptic orbit not by using optical apparatus but by recording and analysing the sound of the piano with high frequency resolution NHA.
AB - In this paper, we use Non-Harmonic Analysis (NHA), as recently proposed by the author, to analyse the change of frequency of a piano string before tuning. NHA has a high frequency resolution and the influence of the window function is smaller than DFT. The use of A4 for the tuning standard is analysed in the experiment. The observed result is that the variation of the frequency is large before the string is tuned. This is a phenomenon that originates in the way that the vibration of the string combines two large and small elliptic orbits in the direction the string was struck, as was shown by analysis of the string vibration with optical apparatus by Tanaka et al. This paper verifies the change of frequency of the string originating in the elliptic orbit not by using optical apparatus but by recording and analysing the sound of the piano with high frequency resolution NHA.
KW - Spectral analysis
KW - Time-frequency analysis
UR - http://www.scopus.com/inward/record.url?scp=51849143419&partnerID=8YFLogxK
U2 - 10.1109/CMD.2008.4580392
DO - 10.1109/CMD.2008.4580392
M3 - 会議への寄与
AN - SCOPUS:51849143419
SN - 9781424416219
T3 - Proceedings of 2008 International Conference on Condition Monitoring and Diagnosis, CMD 2008
SP - 741
EP - 744
BT - Proceedings of 2008 International Conference on Condition Monitoring and Diagnosis, CMD 2008
PB - IEEE Computer Society
T2 - 2008 International Conference on Condition Monitoring and Diagnosis, CMD 2008
Y2 - 21 April 2008 through 24 April 2008
ER -