Deep autoencoders for acoustic anomaly detection: experiments with working machine and in-vehicle audio

نویسندگان

چکیده

The growing usage of digital microphones has generated an increased interest in the topic Acoustic Anomaly Detection (AAD). Indeed, there are several real-world AAD application domains, including working machines and in-vehicle intelligence (the main target this research project). This paper introduces three deep AutoEncoders (AE) for unsupervised tasks, namely a Dense AE, Convolutional Neural Network (CNN) AE Long Short-Term Memory Autoencoder (LSTM) AE. To tune learning architectures, development data were adopted from public domain audio datasets related with machines. A large set computational experiments was held, showing that proposed autoencoders, when combined melspectrogram sound preprocessing, quite competitive outperform recently baseline. Next, on second experimental stage, aiming to address final passenger safety goal, AEs adapted learn normal audio, assuming realistic scenarios by synthetic mixture tool. In general, high quality discrimination obtained: machine – 72% 91%; 78% 81%. conjunction automotive company, intelligent system prototype further developed, test selected model (LSTM AE) during pilot demonstration event targeted cough anomaly. Interesting results obtained, presenting classification accuracy (e.g., 100% front seat locations).

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ژورنال

عنوان ژورنال: Neural Computing and Applications

سال: 2022

ISSN: ['0941-0643', '1433-3058']

DOI: https://doi.org/10.1007/s00521-022-07375-2