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| projects:pms [2017/02/28 19:25] – [Enhanced Bowed-String Simulations] gary | projects:pms [2020/03/23 15:43] – [Efficient and Accurate Synthesis of Strings] gary |
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| Since 2012, we have engaged in a research collaboration with Dr. Esteban Maestre and Dr. Julius Smith (Stanford University) to investigate the design of violin and guitar body filters, parameterized from measurements, for sound synthesis models. This research has included: modal decomposition of measured driving-point admittances obtained by means of a novel frequency-domain algorithm for optimization of digital filters in parallel form; passive modeling of radiativity and admittance by projection of measurements over a common modal basis, and an efficient implementation of bridge reflectance and sound radiativity filters from a single bank of shared resonant filters. The results make it possible to synthesize in real time the sound of a specific violin or guitar, with many possible commercial applications. For example, this technology could be used to virtually audition, via an online interface, a set of instruments for sale in a shop. | Since 2012, we have engaged in a research collaboration with Dr. Esteban Maestre and Dr. Julius Smith (Stanford University) to investigate the design of violin and guitar body filters, parameterized from measurements, for sound synthesis models. This research has included: modal decomposition of measured driving-point admittances obtained by means of a novel frequency-domain algorithm for optimization of digital filters in parallel form; passive modeling of radiativity and admittance by projection of measurements over a common modal basis, and an efficient implementation of bridge reflectance and sound radiativity filters from a single bank of shared resonant filters. The results make it possible to synthesize in real time the sound of a specific violin or guitar, with many possible commercial applications. For example, this technology could be used to virtually audition, via an online interface, a set of instruments for sale in a shop. |
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| A recent collaboration with several researchers at Stanford and the Politecnico di Milano is focusing on the virtual restoration and resynthesis of a historically important violin, the 1716 “Messiah” by Stradivarius, which has never been played because of a crack in its top plate. | A recent collaboration with several researchers at Stanford and the Politecnico di Milano is focusing on the virtual restoration and resynthesis of a historically important violin, the 1716 “Messiah” by Stradivarius, which sits in Ashmolean Museum in Oxford, England and cannot be played because of its fragile condition. |
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| * Maestre, E., Scavone, G. and Smith, J.O. (2016) [[http://ieeexplore.ieee.org/document/7558138/|"Design of Recursive Digital Filters in Parallel Form by Linearly Constrained Pole Optimization."]] //IEEE Signal Processing Letters//, Vol. 23, Issue 11, pp. 1547–1550. | * Maestre, E., Scavone, G. and Smith, J.O. (2016) [[http://ieeexplore.ieee.org/document/7558138/|"Design of Recursive Digital Filters in Parallel Form by Linearly Constrained Pole Optimization."]] //IEEE Signal Processing Letters//, Vol. 23, Issue 11, pp. 1547–1550. |
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| * Maestre, E., Scavone, G. and Smith, J. O. (2016). [[http://asa.scitation.org/doi/abs/10.1121/1.4969636|"Experimental modal analysis/synthesis of saxophone input impedances (A)."]] 172nd Meeting of the Acoustical Society of America, Honolulu, Hawaii, 28 November - 2 December, //Journal of the Acoustical Society of America//, Vol. 140, p. 3092. | * Maestre, E., Scavone, G. and Smith, J. O. (2016). [[http://asa.scitation.org/doi/abs/10.1121/1.4969636|"Experimental modal analysis/synthesis of saxophone input impedances (A)."]] 172nd Meeting of the Acoustical Society of America, Honolulu, Hawaii, 28 November - 2 December, //Journal of the Acoustical Society of America//, Vol. 140, p. 3092, invited presentation. |
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| * Maestre, E., Scavone, G. P., Smith, J.O. "Digital modeling of string instrument bridge reflectance and body radiativity for sound synthesis by digital waveguides." IEEE Workshop on Applications of Signal Processing to Audio and Acoustics, New Paltz, NY, 18-21 October 2015, pp. 1-5. | * Maestre, E., Scavone, G. P., Smith, J.O. "Digital modeling of string instrument bridge reflectance and body radiativity for sound synthesis by digital waveguides." IEEE Workshop on Applications of Signal Processing to Audio and Acoustics, New Paltz, NY, 18-21 October 2015, pp. 1-5. |
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| * Maestre, E., Spa, C., Llimona, Q., Scavone, G. P. and Smith, J.O. (2015). [[http://asa.scitation.org/doi/abs/10.1121/1.4933922|"Playability of a bowed string physical model including finite-width thermal friction and hair dynamics (A)."]] 170th Meeting of the Acoustical Society of America, Jacksonville, FL, 2-6 November, //Journal of the Acoustical Society of America//, Vol. 138, p. 1887. | * Maestre, E., Spa, C., Llimona, Q., Scavone, G. P. and Smith, J.O. (2015). [[http://asa.scitation.org/doi/abs/10.1121/1.4933922|"Playability of a bowed string physical model including finite-width thermal friction and hair dynamics (A)."]] 170th Meeting of the Acoustical Society of America, Jacksonville, FL, 2-6 November, //Journal of the Acoustical Society of America//, Vol. 138, p. 1887, invited presentation. |
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| * Maestre, E., Scavone, G., and Smith, J. O. (2011). [[http://asa.scitation.org/doi/abs/10.1121/1.3654472|"Modeling of a violin input admittance by direct positioning of second-order resonators (A)."]] //Journal of the Acoustical Soc. of America//, Vol. 130, p. 2364. | * Maestre, E., Scavone, G., and Smith, J. O. (2011). [[http://asa.scitation.org/doi/abs/10.1121/1.3654472|"Modeling of a violin input admittance by direct positioning of second-order resonators (A)."]] //Journal of the Acoustical Soc. of America//, Vol. 130, p. 2364, invited presentation. |
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