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Competition on speaker recognition in mobile environment using the MOBIO database

In the context of BEAT project, the Biometric group at the Idiap Research Institute is organizing the second competition on text independent speaker recognition for the 2013 International Conference on Biometrics (ICB-2013) to be held in Madrid, Spain on June 4-7, 2013. Researchers in Biometrics are highly invited to participate to this competition. This will help them to evaluate the progress made in the last couple of years.

The competition will be carried on the MOBIO database. MOBIO is a challenging bimodal (face/speaker) database recorded from 152 people. The database has a female-male ratio of nearly 1:2 (52 females and 100 males) and was collected from August 2008 until July 2010 in six different sites from five different countries. This led to a diverse bi-modal database with both native and non-native English speakers.

More technical details about the MOBIO database can be found on its official webpage:

The evaluation Plan can be found here

Particularity of MOBIO database

Compared to other evaluation databases such as NIST-SRE Eval, MOBIO database is a more challenging database, especially regarding the following 2 points:

  1. The data is acquired on Mobile devices possibly with real noise.
  2. The duration of the speech segments is relatively very short (around 10s or less).


The following table gives a detailed overview about the partition of the database between training set (Background), development set (DEV), and evaluation set (EVAL).

Train Test Train Test
Spk Files Targets Files Spks Files Trials Targets Files Spks Files Trials
MALE 37 7104 24 120 24 2520 60480 38 190 38 3990 151620
FEMALE 13 2496 18 90 18 1890 34020 20 100 20 2100 42000
TOTAL 50 9600 42 210 42 4410 94500 58 290 58 6090 193620


Particularity of the evaluation

  1. The particularity of the evaluation is the restriction of using a unique protocol for all participants. This gives a more appropriate and objective comparison between different systems.
  2. Since the evaluation is done on data recorded on mobile devices, the processing time and the memory footprint are given special attention. For this reason, participants are invited to provide more details about these at all different stages of their system (A form will be sent to participants at evaluation time).


Downloading the data

The data for the competition can be downloaded from the download section of the original MOBIO website. This will require an EULA to be signed. After getting access, you should download the file "ICB2013-train_dev_audio.tar.gz", which contains both the audio data and the file lists defining the evaluation protocol.

For an example, how to use these file lists, we provide a baseline UBM-GMM system, which you can download here (last update: 31/01/2013. Thanks to Flavio!). The baseline script is written in python. To run the baseline will require to have installed the open source library Bob (only available for Linux and MacOS based operating systems, we are working on a MS Windows version of Bob). When you put the "" file to the same directory where you extracted the MOBIO data, the script should run out of the box, otherwise you might have to specify some command line options (see " --help" for details).

If you have trouble with either downloading the data or running the baseline script, please feel free to contact us.

Important Dates

At the beginning of the competition, participants will be provided with the training list of background models, and the training and test lists of the Development set. Additionally, the source code of a baseline speaker recognition system will be published to give an example on how to use these lists. At the evaluation time (March 1, 2013), the equivalent lists of the Evaluation set will be made available to the participants.

At the end of the competition (March 15, 2013), the authors are invited to deliver the resulting score files of the Development and the Evaluation set, and give a short description of their system(s). These results will be published in a conference paper at the ICB-2013.

Registration Due January 14, 2013
Availability of Training and Development sets January 14, 2013
Availability of Evaluation set March 1, 2013
Submission of the Results + System description March 15, 2013
Publication of the Results at ICB-2013 April 8, 2013



Elie Khoury Elie.Khoury {at}
Sébastien Marcel Sebastien.Marcel {at}
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