| Title | Non-Impulsive Signal Deconvolution for Computation of Violin Impulse Responses |
| Publication Type | Conference Paper |
| Year of Publication | 2012 |
| Conference Name | IEEE International Conference on Acoustics, Speech, and Signal Processing |
| Authors | Bucci, A., Pérez A., & Bonada J. |
| Conference Start Date | 25/03/2012 |
| Conference Location | Kyoto, Japan |
| Keywords | bowing, deconvolution, Violin |
| Abstract | This work presents a method to compute violin body impulse
responses (BIR) of acoustic violins that are adapted to the
signal captured with an electric violin (a violin with a transducer
measuring vibration). The computed BIRs correspond
to the transfer function that maps the pickup signal of the
electric violin to the radiated acoustic sound of the acoustic
violins. By convolution of the pickup signal with the corresponding
BIR, we pretend to simulate the radiated sound of
the acoustic violin by playing the electric one. The method
to obtain the BIRs is based on signal deconvolution between
a recorded audio signal of an acoustic violin and the signal
coming from an electric violin’s pickup. The recorded signals
consist of glissandi performed with a violin-playing machine
enhanced with motion sensors that provide the bowing parameters
(bowing position, velocity and force). By controlling the
bowing parameters and analyzing the fundamental frequency
of each frame we perform the deconvolution on equivalent
frames and obtain the desired impulse response between the
two instruments. A user survey consisting of violinists and
non-violinists was performed to evaluate the obtained results
with respect to the original pickup signal.
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