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Neural network for multi-exponential sound energy decay analysis.
Georg Götz1, Ricardo Falcón Pérez1, Sebastian J Schlecht1
1Aalto Acoustics Lab, Department of Signal Processing and Acoustics, Aalto University, P.O. Box 13100, 00076 Aalto, Finland.
A new neural network accurately estimates sound energy decay function (EDF) parameters from acoustic measurements. This efficient method works on large datasets and is publicly available.
Area of Science:
- Acoustics
- Signal Processing
- Machine Learning
Background:
- Established sound energy decay function (EDF) models involve superpositions of exponentials and noise.
- Accurate parameter estimation is crucial for understanding acoustic environments.
Purpose of the Study:
- To propose a novel neural-network-based approach for estimating parameters of sound energy decay functions (EDFs).
- To evaluate the network's performance on extensive real-world acoustic measurement datasets.
Main Methods:
- Development of a lightweight neural network architecture.
- Training the network on synthetic EDFs.
- Evaluation using two large datasets comprising over 20,000 measured EDFs from diverse acoustic environments.
Main Results:
- The neural network robustly estimates EDF model parameters.
- The proposed method demonstrates computational efficiency.
- The network performs well across various acoustic conditions.
Conclusions:
- The neural network offers a reliable and efficient solution for EDF parameter estimation.
- The approach is suitable for large-scale acoustic data analysis.
- Public availability of the implementation facilitates broader adoption.

