Community

AES Conference Papers Forum

Feature Based Impact Sound Synthesis of Rigid Bodies Using Linear Modal Analysis for Virtual Reality Applications

Document Thumbnail

This paper investigates an approach for synthesizing sounds of rigid body interactions using linear modal synthesis (LMS). We propose a technique based on feature extraction from one recorded audio clip to estimate perceptually satisfactory material parameters of virtual objects for real-time sound rendering. In this study, the significant features from one recorded audio are extracted by computing high level power spectrogram that is based on short time Fourier transform analysis with optimal windowed function. Based on these reference features, the material parameters of intrinsic quality are computed for interactive virtual objects in graphical environments. A tetrahedralize finite element method (FEM) is employed to achieve Eigen values decomposition during modal analysis process. Residual compensation is also implemented to optimize the perceptual differences between the synthesized and the real sounds, and to include the non-harmonic components in the synthesized audio in order to achieve perceptually high quality sound. Furthermore, the computed parameters for material objects of one geometry can be transferred to different geometries and shapes of the same material objects, whereas, the synthesized sound varies as the shapes of the objects change. The results of the estimated parameters as well as a comparison of real sound and the synthesized sound are presented. The potential applications of our methodology are synthesis of real time contact sound events for games and interactive virtual graphical animations and providing extended authoring capabilities.

Authors:
Affiliation:
AES Conference:
Paper Number:
Publication Date:
Subject:

Click to purchase paper as a non-member or you can login as an AES member to see more options.

No AES members have commented on this paper yet.

Subscribe to this discussion

RSS Feed To be notified of new comments on this paper you can subscribe to this RSS feed. Forum users should login to see additional options.

Start a discussion!

If you would like to start a discussion about this paper and are an AES member then you can login here:
Username:
Password:

If you are not yet an AES member and have something important to say about this paper then we urge you to join the AES today and make your voice heard. You can join online today by clicking here.

AES - Audio Engineering Society