Attention-based Deep Recurrent Network for Localizing Acoustic Events (ADRENALINE)

This repository contains the codebase accompanying the publication:

Christopher Schymura, Tsubasa Ochiai, Marc Delcroix, Keisuke Kinoshita, Tomohiro Nakatani, Shoko Araki, Dorothea Kolossa, "Exploiting Attention-based Sequence-to-Sequence Architectures for Sound Event Localization", European Signal Processing Conference (EUSIPCO 2020)

[ IEEEXplore ] [ arXiv ]

Summary

The proposed ADRENALINE architecture is shown below. The box on the left shows an exemplary encoding process for three discrete time-steps. A CNN-based feature extraction stage similar to the one used in the SELDnet architecture is exploited to derive features from raw multi-channel audio signals. The attention weights are computed via scaled dot products between the encoder hidden states and the corresponding decoder hidden state from the previous decoding time-step. A context vector is derived as a weighted sum of the encoder hidden states, using the attention weights. The output of the decoder is composed of the source activity indicator and the corresponding source directions-of-arrival (DoAs), comprising azimuth and elevation. A concatenation of the decoder output from the previous time-step and the current context vector serves as input to the decoder, as shown in the box on the right.

Overview of the general ADRENALINE architecture.

Getting started

1. Checkout the repository and download the required datasets via $ ./download_data.sh.

2. It is recommended to use a dedicated virual environment for running the code:

   $ sudo apt install virtualenv
$ virtualenv --python=python3.7 ./venv
$ source ./venv/bin/activate
$ pip install -r requirements.txt

3. Start an experiment via the main script run.py by selecting a specific configuration file (e.g. the CNN baseline model cnn.yaml):

   $ python run.py --config ./configs/cnn.yaml --data_root /path/to/datasets

   For further details on arguments accepted by the main script, type python run.py --help.

Display training progress and test results

You can display the training progress and results on the validation and test sets using TensorBoard. In the default setting, evaluation log-files will be stored in a folder ./experiments. Simply type

$ tensorboard --logdir experiments

to start a TensorBoard instance, which shows all tracked training, validation and test parameters.