# Learning Magnitude Distribution of Sound Fields via Conditioned Autoencoder

Source: [Learning Magnitude Distribution of Sound Fields via Conditioned Autoencoder](<https://www.sota2.com/research/paper/68fa79911e209131cea7e4e2>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-26T05:00:46.441Z

Authors: Shoichi Koyama, Kenji Ishizuka

Published: 2025-06-20T03:52:37.000Z

## Abstract

A learning-based method for estimating the magnitude distribution of sound fields from spatially sparse measurements is proposed. Estimating the magnitude distribution of acoustic transfer function (ATF) is useful when phase measurements are unreliable or inaccessible and has a wide range of applications related to spatial audio. We propose a neural-network-based method for the ATF magnitude estimation. The key feature of our network architecture is the input and output layers conditioned on source and receiver positions and frequency and the aggregation module of latent variables, which can be interpreted as an autoencoder-based extension of the basis expansion of the sound field. Numerical simulation results indicated that the ATF magnitude is accurately estimated with a small number of receivers by our proposed method.

## Recorded benchmark results

A research result applies to its stated dataset, split, metric and evaluation configuration. Compare like-for-like settings, preserve the metric's unit and direction, and distinguish paper-reported results from independent reproduction. The best result recorded here is not a claim of exhaustive, current global coverage.

- [3D ATF reconstruction on R1 (test)](<https://www.sota2.com/research/sota/3d-atf-reconstruction-on-r1-test.md>): 3D ATF reconstruction; R1 (test); LSD (0-20 / 312 Hz): 2.69.

## Original sources and implementation

[Original paper](<https://arxiv.org/abs/2506.16729>)

[PDF](<https://arxiv.org/pdf/2506.16729.pdf>)