Events

Step into a world of audio innovation and inspiration at AES Show 2025 – Long Beach. The flagship event of the Audio Engineering Society. This annual gathering unites over 10,000 audio professionals, enthusiasts, and exhibitors from around the globe. Whether you’re a seasoned expert, a novice, or a student, the AES Show provides a platform for collaboration, discovery, and learning.

Join us in this immersive experience where leading manufacturers showcase cutting-edge solutions, engineers demonstrate the latest products, and a diverse array of workshops, panels, demos, and training sessions cater to both researchers and practitioners. 

We are excited to present our paper:

“Modelling and Verification of Low-Frequency Sound Systems in the Application of Noise Predictions”

📅 Saturday, October 25, 2025 | ⏰ 2:00–2:30 PM PDT
📍 Room 103B, Convention Center Walkway, Long Beach, CA

👤 By Tobias Goldmann (TW AUDiO International GmbH), Stefan Feistel (AFMG Technologies GmbH), Janosch Blaul (Wölfel Engineering GmbH + Co. KG), and Andreas Nicht (Akustik Bureau Dresden)

Abstract

Noise emission into the neighbourhood is often an essential aspect when designing an open-air sound system. The low-frequency range is particularly important, as a high sound pressure level of music signals and low absorption by the environment are to be expected. The overall radiation characteristic depends on the superposition of the individual sources. Due to the long wavelength in the operating range, the radiation pattern can be controlled only with considerable technical and financial effort. It is therefore of great interest to simulate the stage configuration accurately and derive a sound source description for the noise prediction model, which can represent the complex radiation behaviour of the entire sound reinforcement system according to current standards and regulations.

In this study, an Aggregate Point Source (APS) model is used to calculate and validate a substitute sound source for practically relevant subwoofer configurations of varying complexity. Starting with the theoretical background of the distance behaviour of loudspeaker arrays, the sound field and radiation of the example setups in the measurements are first compared with a complex point source model typically used in the design process of sound reinforcement systems. In a second step, the resulting substitute sound sources are implemented in noise prediction software to validate the far-field radiation in the low-frequency range based on a single directivity dataset. The results are practically accurate in both simulation environments under the given far-field conditions and limits of uncertainty. First, test results extending the spectral range to the crossover region are discussed, as well.

Whether you are working with sound reinforcement, noise prediction, or acoustic modelling, this talk will provide new insights into low-frequency system behaviour and practical methods for more accurate predictions.

Join us in Long Beach to connect, exchange ideas, and explore how these methods can support your projects!

You can register for the AES Show 2025 on the official event website of the AESShow.