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CRNNで鳥の声の識別 – Convolutional Recurrent Neural Networks for Bird Audio Detection

Entry
CRNNで鳥の声の識別 – Convolutional Recurrent Neural Networks for Bird Audio Detection
Simple Title
Convolutional Recurrent Neural Networks for Bird Audio Detection
Type
Paper
Posted at
March 13, 2017
Tags
sound
Year
2017
Project Page
image

Overview

CNNとRNNを組み合わせてConvolutional Recurrent Neural Networksで鳥の鳴き声の識別をしようというもの. 鳥の声以外にも音の識別にいろいろと応用が利きそう.

Abstract

Bird sounds possess distinctive spectral structure which may exhibit small shifts in spectrum depending on the bird species and environmental conditions. In this paper, we propose using convolutional recurrent neural networks on the task of automated bird audio detection in real-life environments. In the proposed method, convolutional layers extract high dimensional, local frequency shift invariant features, while recurrent layers capture longer term dependencies between the features extracted from short time frames. This method achieves 88.5% Area Under ROC Curve (AUC) score on the unseen evaluation data and obtains the second place in the Bird Audio Detection challenge.

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