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Convention Paper

Classification of Spatial Audio Location and Content Using Convolutional Neural Networks

Authors: Hirvonen, Toni

AES Convention 138 · Paper 9294 · May 2015

Abstract

This paper investigates the use of Convolutional Neural Networks for spatial audio classification. In contrast to traditional methods that use hand-engineered features and algorithms, we show that a Convolutional Network in combination with generic preprocessing can give good results and allows for specialization to challenging conditions. The method can adapt to e.g. different source distances and microphone arrays, as well as estimate both spatial location and audio content type jointly. For example, with typical single-source material in a simulated reverberant room, we can achieve cross-validation accuracy of 94.3% for 40-ms frames across 16 classes (eight spatial directions, content type speech vs. music).

Details

Published in
AES Convention 138
AES Convention
138
Paper number
9294
Publication date
May 6, 2015
Session subject
Sound Localization and Separation
Affiliation
Dolby Laboratories, Stockholm, Sweden (See document for exact affiliation information.)
Type
Convention Paper