MultiSV: dataset for far-field multi-channel speaker verification

MultiSV is a corpus designed for training and evaluating text-independent multi-channel speaker verification systems. The training multi-channel data is prepared by simulation on top of clean parts of the Voxceleb dataset. The development and evaluation trials are based on either retransmitted or simulated VOiCES dataset, which we modified to provide multi-channel trials. MultiSV can be used also for experiments with dereverberation, denoising, and speech enhancement.

Quick start

conda create -n py39_MultiSV python=3.9
conda activate py39_MultiSV
pip install -r requirements.txt
# TRAINING DATA:
./create_training_data.sh $STORAGE_DIR
# SIMULATED DEVELOPMENT AND EVALUATION DATA:
./create_dev_eval_data.sh --musan-dir $STORAGE_DIR/noises_training --voices-dir $VOICES_DIR $STORAGE_DIR

The resulting data can be found in $STORAGE_DIR/MultiSV after simulation. Detailed information about simulation scripts is provided later.

Note: Please note that recordings are processed sequentially during simulation. Parallelization (and hence speedup) can be achieved by splitting CSV files (such as training/metadata/MultiSV_train.csv) defining simulation parameters. We will consider native parallelization in the future.

Usage

Retransmitted development and evaluation data download

Single and/or multi-channel segments of verification trial pairs are based on the VOiCES dataset. In order to perform an evaluation based on prepared trial lists, it is required to download the VOiCES data first. Please follow instructions at the official webpage and download VOiCES_release.tar.gz.

Note: we did not automate the download as the corpus is available on AWS which requires AWS Command Line Interface (CLI).

Training data simulation

If your python installation satisfies the requirements defined in requirements.txt, the easiest way to generate simulated training data completely from scratch is by running:

./create_training_data.sh STORAGE_DIR

We recommend creating a new python environment with the following commands:

$ conda create -n py39_MultiSV python=3.9
$ conda activate py39_MultiSV
$ pip install -r requirements.txt

Having the environment created, one can follow any of the following alternatives prior to running the create_training_data.sh script to correctly utilize it during simulation.

• activate the environment using conda activate or source activate,
• or add the activation command to scripts/select_python.sh (follow the instructions therein),
• or simply add the path of the installed python interpreter to scripts/select_python.sh (follow the instructions therein).

The create_training_data.sh may be run with various options making use of already downloaded data:

./create_training_data.sh [-v VOX2_DIR] [-f FMA_DIR] [-m MUSAN_DIR] [-s FREESOUND_BUT_DIR] [-r RIR_DIR] [-k] [-c] STORAGE_DIR
The following options are allowed. The arguments requiring value must be separated from the value by white space (= sign is not supported).
STORAGE_DIR
	Target directory which will contain downloaded datasets as well as the MultiSV training data upon a successful run of the script.
-v, --vox2-dir
	Path to the directory with Voxceleb 2 audio files (a directory containing dev, test subdirectories, and other content).
-f, --fma-dir
	Path to the directory with FMA small audio files.
-m, --musan-dir
	Path to the directory with MUSAN audio files.
-s, --freesound-but-dir
	Path to the directory with a selection of Freesound.org and BUT-recorded noises.
-r, --rir-dir
	Path to the directory with simulated room impulse responses.
-k, --keep-compressed
	If specified, downloaded compressed files will not be removed from the storage directory after extraction.
-c, --no-cross-valid
	If specified, it prevents the script from creating a cross-validation set.

Development and evaluation data simulation

Preparation of simulated development and evaluation data is similar to the training data simulation procedure (including python environment creation). It is, however, required that the VOiCES corpus is downloaded beforehand. To start the simulation, run the following script:

./create_dev_eval_data.sh -e VOICES_DIR [-m MUSAN_DIR] [-s FREESOUND_BUT_DIR] [-r RIR_DIR] [-k] STORAGE_DIR
STORAGE_DIR
	Target directory which will contain downloaded datasets as well as the MultiSV development and evaluation data upon a successful run of the script.
-e, --voices-dir
	Path to the directory with the VOiCES dataset (required).
-m, --musan-dir
	Path to the directory with MUSAN audio files.
-s, --freesound-but-dir
	Path to the directory with a selection of Freesound.org and BUT-recorded noises.
-r, --rir-dir
	Path to the directory with simulated room impulse responses.
-k, --keep-compressed
	If specified, downloaded compressed files will not be removed from the storage directory after extraction.

It is recommended to reuse the MUSAN dataset from the training data simulation phase to save space. We also note that Freesound.org and BUT noises (argument -s) and room impulse responses (argument -r) are different from those used in training data. Therefore, it is not possible to reuse files downloaded by the create_training_data.sh script.

Evaluation

Trial definitions for the retransmitted VOiCES data evaluation are located in evaluation/VOiCES_multichan/<condition> where <condition> is one of the following conditions:

• CE: clean enrollment,
• SRE: single-channel retransmitted enrollment,
• MRE: multi-channel retransmitted enrollment,
• MRE_hard.

Detailed information about the conditions is provided in the accompanying paper. Every condition contains the following files: MultiSV_<type>_<condition>.<ext>. The <type> identifier is one of

• dev: development,
• eval_v1: evaluation version 1,
• eval_v2: evaluation version 2.

Information about the types is also detailed in our paper. The identifier stands for a specific file extension:

• txt: trial definition where lines are in the form of <enroll> <test> tgt|imp, where tgt means "target" and imp "impostor" or "non-target" trial.
• enroll.scp: maps <enroll> names to <logical> names (<enroll>=<logical>). Logical name is for example a name of a microphone array.
• test.scp: analogical to enroll.scp
• enroll.chmap.scp: maps <logical> names to actual names of files (<logical>=<physical>), where <physical> is either one file or mutliple files separated by space.
• test.chmap.scp: analogical to enroll.chmap.scp

The evaluation/VOiCES_multichan/SRE condition is used for the simulated data evaluation. It is enough to replace the original VOiCES recordings with those produced by create_dev_eval_data.sh. The simulated recordings have the same names as the original ones. We note that the counterparts with the same names share the same speech content, but noise and reverberation are different. Therefore, the distractor identifier in the name may not correspond to the actual noise in the simulated recordings.

Citation

@misc{multisv2021,
      title={MultiSV: Dataset for Far-Field Multi-Channel Speaker Verification}, 
      author={Ladislav Mošner and Oldřich Plchot and Lukáš Burget and Jan Černocký},
      year={2021},
      eprint={2111.06458},
      archivePrefix={arXiv},
      primaryClass={eess.AS}
}