a repository for our work submission in the CS236605 Deep Learning course, Technion, Israel. by shai guendelman and or steiner, summer of 2019.

it is available at: here

The structure of the model is as follows:

• dataset directory you should download the dataset to
• demo_cache has some samples for demonstration in the methods_demo.ipynb
• experiment_output directory contains some output that some of the experiments produce, like the saved checkpoints and the results
• pb_bss is copied from the repo at here, it implements some algorithms for blind source seperation on multichannel signals
• rotor-speech-results has some examples of the input and output of a trained model. as we can't upload the trained model to github we just produced the results
• environment.yml is the conda environment file
• .gitignore contains the ignore command to ignore everything that is inside of the dataset and experiment_output directories
• requirments.txt lists the packages used to run the experiment on a windows 10 computer, using python 3.7
• rotor-speech_results.html is an exprted jupyter notebook that illustrats the way thet the evaluation metrics are calculated
• run_experiment.bat is the script used to run the model on our PC's, it can be easly converted into a BASH script.
• methods_demo.ipynb is a notebook that explains how the model works, to use it you need some python packeges installed that are in the requirments.txt, all the other notebooks are for evaluating the different experiments

• spatial_two_mics - This is were most of the logic happens. most of the parts are copied from the repo here the sub-directories are orginized in the following way:
• data_generator contains the models that are used to preprocess the data for faster training, there are some versions of the code there, the important part there is create_cached_dataset.py that calls my_dregon_dataset_creator_and_storage.py to read the audio files, make the mask estimations on them and create the STFT representation of them so they are ready to used for training. also contains source_position_generator.py that randomly generates positions to create the mixtures.
• data_loaders here are spacific loaders to the data file structure, this knows how to load to python the raw data from the dataset according to the given file structure. it is used by the data_generator above.
• dnn this contains the loss function, the function that calculates the SDR, the training experiment we used in experiments/my_experiment.py the model class, and model evaluation in the modules sub-dir. The utils sub-dir contains some functions and my_fast_dataset.py that implements a pytorch dataloader for our data, and model_logger.py that has functions for saving and loading trained models.
• labels_inference contains the different methods to infer the labels from the mixtures, ground truth and duet(phase difference clustering)
• utils contains the mixture constructor that takes into account the positions of the sources in a room
• config.py has paths to some important directories, I set them to work if you follow the insturctions below, if you want to change them for different things try to change them there

1. download the dataset from my google drive: my dregon dataset and unzip it with the name MY_DREGON into the dataset directory
2. after having the MY_DREGON folder inside of dataset, you need to create the mixtures with your costum combination. got to spatial_two_mics/data_generator/create_cached_dataset.py and set the wanted mixtures to be made and the quantities of train, test and evaluation samples, and run it. it might take a while... when it finishes it should give you paths to the datasets. they will probably be found in the dataset directory.
3. you should look at run_experiment.bat to see the different input parameter for the script.

For running the experiment you should activate your env, and

python ./spatial_two_mics/dnn/experiments/my_experiment.py

with the wanted paramenters. NOTE: You need to give as input the directory of the preproccessed data set that was given to you in the previous step, without the 'train'/'test'/'val' in the end.

GOOD LUCK!