Real-Time Implementation of an Elasto-Plastic Friction Model applied to Stiff Strings using Finite Difference Schemes

Silvin Willemsen; Stefan Bilbao; Stefania Serafin

Real-Time Implementation of an Elasto-Plastic Friction Model applied to Stiff Strings using Finite Difference Schemes

Silvin Willemsen, Stefan Bilbao, Stefania Serafin

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

3 Citations (Scopus)

239 Downloads (Pure)

Abstract

The simulation of a bowed string is challenging due to the strongly non-linear relationship between the bow and the string. This relationship can be described through a model of friction. Several friction models in the literature have been proposed, from simple velocity dependent to more accurate ones. Similarly, a highly accurate technique to simulate a stiff string is the use of finite-difference time-domain (FDTD) methods. As these models are generally computationally heavy, implementation in real-time is challenging. This paper presents a real-time implementation of the combination of a complex friction model, namely the elasto-plastic friction model, and a stiff string simulated using FDTD methods. We show that it is possible to keep the CPU usage of a single bowed string below 6 percent. For real-time control of the bowed string, the Sensel Morph is used.

Original language	English
Title of host publication	Proceedings of the 22nd International Conference on Digital Audio Effects (DAFx-19)
Number of pages	7
Publication date	2 Sept 2019
Pages	40-46
Publication status	Published - 2 Sept 2019
Event	22nd International Conference on Digital Audio Effects - Birmingham, United Kingdom Duration: 2 Sept 2019 → 6 Sept 2019 http://www.dafx.de/?utm_source=researchbib

Conference

Conference	22nd International Conference on Digital Audio Effects
Country/Territory	United Kingdom
City	Birmingham
Period	02/09/2019 → 06/09/2019
Internet address	http://www.dafx.de/?utm_source=researchbib

Series	International Conference on Digital Audio Effects
ISSN	2413-6700

Keywords

physical modelling
real-time
elasto-plastic
finite-difference

Access to Document

DAFx2019WillemsenFinal published version, 2.32 MBLicence: CC BY 3.0

AUB Link

Search for the material in Aalborg University Library's search engine

2 Conference presentations
1 Conference organisation or participation

Poster of "Real-Time Implementation of an Elasto-Plastic Friction Model applied to Stiff Strings using Finite Difference Schemes" at Danish Sound Day
Silvin Willemsen (Speaker)
9 Sept 2019
Activity: Talks and presentations › Conference presentations
Poster of "Real-Time Implementation of an Elasto-Plastic Friction Model applied to Stiff Strings using Finite Difference Schemes" at DAFx conference
Silvin Willemsen (Speaker)
3 Sept 2019
Activity: Talks and presentations › Conference presentations
22nd International Conference on Digital Audio Effects, DAFx 2019
Silvin Willemsen (Participant)
2 Sept 2019 → 6 Sept 2019
Activity: Attending an event › Conference organisation or participation

3 Citations
1 PhD thesis

The Emulated Ensemble: Real-Time Simulation of Musical Instruments using Finite-Difference Time-Domain Methods
Willemsen, S., 2021, Aalborg Universitetsforlag. 476 p.
Research output: PhD thesis

Open Access
File
722 Downloads (Pure)

Cite this

@inproceedings{31a3aacedc2040e5b711a110cc31df8e,

title = "Real-Time Implementation of an Elasto-Plastic Friction Model applied to Stiff Strings using Finite Difference Schemes",

abstract = "The simulation of a bowed string is challenging due to the strongly non-linear relationship between the bow and the string. This relationship can be described through a model of friction. Several friction models in the literature have been proposed, from simple velocity dependent to more accurate ones. Similarly, a highly accurate technique to simulate a stiff string is the use of finite-difference time-domain (FDTD) methods. As these models are generally computationally heavy, implementation in real-time is challenging. This paper presents a real-time implementation of the combination of a complex friction model, namely the elasto-plastic friction model, and a stiff string simulated using FDTD methods. We show that it is possible to keep the CPU usage of a single bowed string below 6 percent. For real-time control of the bowed string, the Sensel Morph is used.",

keywords = "physical modelling, real-time, elasto-plastic, finite-difference",

author = "Silvin Willemsen and Stefan Bilbao and Stefania Serafin",

year = "2019",

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day = "2",

language = "English",

series = "International Conference on Digital Audio Effects",

pages = "40--46",

booktitle = "Proceedings of the 22nd International Conference on Digital Audio Effects (DAFx-19)",

note = "22nd International Conference on Digital Audio Effects <br/>, DAFx-19 ; Conference date: 02-09-2019 Through 06-09-2019",

url = "http://www.dafx.de/?utm_source=researchbib",

}

Willemsen, S, Bilbao, S & Serafin, S 2019, Real-Time Implementation of an Elasto-Plastic Friction Model applied to Stiff Strings using Finite Difference Schemes. in Proceedings of the 22nd International Conference on Digital Audio Effects (DAFx-19). International Conference on Digital Audio Effects, pp. 40-46, 22nd International Conference on Digital Audio Effects
, Birmingham, United Kingdom, 02/09/2019.

Real-Time Implementation of an Elasto-Plastic Friction Model applied to Stiff Strings using Finite Difference Schemes. / Willemsen, Silvin; Bilbao, Stefan; Serafin, Stefania.
Proceedings of the 22nd International Conference on Digital Audio Effects (DAFx-19). 2019. p. 40-46 (International Conference on Digital Audio Effects).

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

TY - GEN

T1 - Real-Time Implementation of an Elasto-Plastic Friction Model applied to Stiff Strings using Finite Difference Schemes

AU - Willemsen, Silvin

AU - Bilbao, Stefan

AU - Serafin, Stefania

PY - 2019/9/2

Y1 - 2019/9/2

N2 - The simulation of a bowed string is challenging due to the strongly non-linear relationship between the bow and the string. This relationship can be described through a model of friction. Several friction models in the literature have been proposed, from simple velocity dependent to more accurate ones. Similarly, a highly accurate technique to simulate a stiff string is the use of finite-difference time-domain (FDTD) methods. As these models are generally computationally heavy, implementation in real-time is challenging. This paper presents a real-time implementation of the combination of a complex friction model, namely the elasto-plastic friction model, and a stiff string simulated using FDTD methods. We show that it is possible to keep the CPU usage of a single bowed string below 6 percent. For real-time control of the bowed string, the Sensel Morph is used.

AB - The simulation of a bowed string is challenging due to the strongly non-linear relationship between the bow and the string. This relationship can be described through a model of friction. Several friction models in the literature have been proposed, from simple velocity dependent to more accurate ones. Similarly, a highly accurate technique to simulate a stiff string is the use of finite-difference time-domain (FDTD) methods. As these models are generally computationally heavy, implementation in real-time is challenging. This paper presents a real-time implementation of the combination of a complex friction model, namely the elasto-plastic friction model, and a stiff string simulated using FDTD methods. We show that it is possible to keep the CPU usage of a single bowed string below 6 percent. For real-time control of the bowed string, the Sensel Morph is used.

KW - physical modelling

KW - real-time

KW - elasto-plastic

KW - finite-difference

M3 - Article in proceeding

T3 - International Conference on Digital Audio Effects

SP - 40

EP - 46

BT - Proceedings of the 22nd International Conference on Digital Audio Effects (DAFx-19)

T2 - 22nd International Conference on Digital Audio Effects <br/>

Y2 - 2 September 2019 through 6 September 2019

ER -

Real-Time Implementation of an Elasto-Plastic Friction Model applied to Stiff Strings using Finite Difference Schemes

Abstract

Conference

Keywords

Access to Document

AUB Link

Fingerprint

Activities

Poster of "Real-Time Implementation of an Elasto-Plastic Friction Model applied to Stiff Strings using Finite Difference Schemes" at Danish Sound Day

Poster of "Real-Time Implementation of an Elasto-Plastic Friction Model applied to Stiff Strings using Finite Difference Schemes" at DAFx conference

22nd International Conference on Digital Audio Effects, DAFx 2019

Research output

The Emulated Ensemble: Real-Time Simulation of Musical Instruments using Finite-Difference Time-Domain Methods

Cite this