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. 2021 Sep 14;14(18):5281. doi: 10.3390/ma14185281

Figure 6.

Figure 6

Measured wavelet–time signal, FFT frequency spectra and damping coefficient in the first 7 vibration modes of the open strings (E2—top; A2—middle, D3—bottom) of an electric guitar with body made of ash wood () and walnut wood ().