Bilbao, Stefan

Newton, Michael

Desvages, Charlotte Genevieve Micheline

European Research Council

2018-06-26T14:03:32Z

2018-06-26T14:03:32Z

2018-07-05

This work outlines the design and implementation of an algorithm to simulate two-polarisation bowed string motion, for the purpose of realistic sound synthesis. The algorithm is based on a physical model of a linear string, coupled with a bow, stopping fi ngers, and a rigid, distributed fingerboard. In one polarisation, the normal interaction forces are based on a nonlinear impact model. In the other polarisation, the tangential forces between the string and the bow, fingers, and fingerboard are based on a force-velocity friction curve model, also nonlinear. The linear string model includes accurate time-domain reproduction of frequency-dependent decay times. The equations of motion for the full system are discretised with an energy-balanced finite difference scheme, and integrated in the discrete time domain. Control parameters are dynamically updated, allowing for the simulation of a wide range of bowed string gestures. The playability range of the proposed algorithm is explored, and example synthesised gestures are demonstrated.

http://hdl.handle.net/1842/31273

en

The University of Edinburgh

C. Desvages and S. Bilbao, "Physical modelling of nonlinear player-string interactions in bowed string sound synthesis using finite difference methods," in Proc. Int. Symp. Mus. Acoust. (ISMA), Le Mans, France, 2014.

C. Desvages and S. Bilbao, "Two-polarisation finite difference model of bowed strings with nonlinear contact and friction forces," inProc. Int. Conf. Digital Audio Effects (DAFx), Trondheim, Norway, 2015.

C. Desvages and S. Bilbao, "Two-polarisation physical model of bowed strings with nonlinear contact and friction forces, and application to gesture-based sound synthesis," Appl. Sci., vol. 6, no. 5(135), 2016.

C. Desvages, S. Bilbao, and M. Ducceschi, "Improved frequency-dependent damping for time domain modelling of linear string vibration," in Proc. Int. Congr. Acoust., Buenos Aires, Argentina, 2016.

C. Desvages and M. Newton, "Bow control and playability of a two-polarisation time domain physical model of a bowed string," in Proc. Int. Symp. Mus. Room Acoust., Buenos Aires, Argentina, 2016.

F. Pantelic, C. Desvages, J. Prezelj, and D. Sumarac Pavlovic, "Influence of bow-bridge distance on string timbre,", in Proc, 7th Congr. Alps Adria Acoust. Assoc. (AAAA 2016), Ljubljana, Slovenia, 2016.

string instruments

finite difference method

sound synthesis

modelling

physical modelling

Physical modelling of the bowed string and applications to sound synthesis

Thesis or Dissertation

Doctoral

PhD Doctor of Philosophy