Efficient and accurate synthesis of circular membranes using digital waveguides

JA Laird, P Masri, CN Canagarajah

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

Abstract

Digital waveguides may be used to construct efficient physical models of musical instruments and other resonant systems. They are commonly used to model systems with simple boundary conditions, such as strings and square membranes. Membranes are modelled by connecting digital waveguides together to form a mesh; however when modelling circular membranes, such as those found in percussive drums or microphones, the mesh does not approximate well to the boundary shape. It was found that a two-dimensional triangular mesh structure, with rimguides attached around the edge could overcome this. In this paper several rimguide strategies have been explored. The best of these involves adjusting the phase delay so that the model is accurate for frequencies close to DC. The improvement is particularly noticeable for efficient (low sample rate) implementations
Translated title of the contributionEfficient and accurate synthesis of circular membranes using digital waveguides
Original languageEnglish
Title of host publicationIEE Colloqium on Audio and Music Technology
PublisherInstitution of Engineering and Technology (IET)
Pages12/1 - 12/6
DOIs
Publication statusPublished - Nov 1998
EventColloquium on Audio and Music Technology: the Challenge of Creative DSP - London, United Kingdom
Duration: 1 Nov 1998 → …

Conference

ConferenceColloquium on Audio and Music Technology: the Challenge of Creative DSP
CountryUnited Kingdom
CityLondon
Period1/11/98 → …

Bibliographical note

Rose publication type: Conference contribution

Other identifier: Ref. No. 1998/470

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