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Conference Paper

Procedural Audio Using Generalized Granular Synthesis

Authors: Falk, Tommy; Ramakrishna, Raksha; de Bruijn, Werner

AES 2024 International Conference on Audio for Virtual and Augmented Reality · Paper 25 · August 2024

Abstract

This paper presents a method for generating procedural audio using a form of granular synthesis where several aspects of the sound can be controlled dynamically in real-time. Original recordings are partitioned into small parts, a.k.a. grains, that are stored in a multi-dimensional database. Using a weighted random selection of grains, a natural output signal can be generated without repeating grains. The granular databases can be stored in a newly defined file format based on the open storage format HDF5, which means that granular databases can be created and shared for re-use in multiple productions. The method described in this paper has been adopted into the new MPEG-I Immersive audio standard for 6DoF VR and AR audio.

Details

Published in
AES 2024 International Conference on Audio for Virtual and Augmented Reality
Paper number
25
Publication date
August 5, 2024
Session subject
Audio for Virtual and Augmented Reality
Affiliation
Ericsson AB, Stockholm, Sweden; Ericsson AB, Stockholm, Sweden; Ericsson Telecommunicatie B.V., Rijen, The Netherlands (See document for exact affiliation information.)
Type
Conference Paper