Three years after its launch, the AASP TC Challenges series has achieved its goal of
stimulating ground-breaking approaches to hot topics in Audio and Acoustic Signal
Processing. The challenges run so far have been great successes, leading to unprecedented
participation, new publicly available datasets, and highly attended special sessions and
workshops:
-    the CHiME Challenge on speech separation and recognition in domestic environments
(http://spandh.dcs.shef.ac.uk/chime_challenge/chime2013/)
-    the D-Case Challenge on detection and classification of acoustic scenes and events
(http://c4dm.eecs.qmul.ac.uk/sceneseventschallenge/)
-    the REVERB Challenge on single- and multichannel speech dereverberation
(http://reverb2014.dereverberation.com/)

The coming year will see the unravelling of the ACE Challenge on acoustic
characterization of environments (http://www.ace-challenge.org/), and future challenges
are now eagerly awaited by academics and industrials.

In order to pursue this endeavor, we are issuing a call for expressions of interest in
organizing new challenges. This is an open call with no deadline. Prospective organizers
should provide a brief description of the challenge, the planned test data and evaluation
methodology, and their value to the community. Challenges at the crossroads of other
communities such as speech processing or machine learning are especially welcome. For
more details, see

http://www.signalprocessingsociety.org/technical-committees/list/audio-tc/aasp-challenges/

The AASP TC Challenges Subcommittee will help organizers run a successful Challenge by
providing scientific and organizational feedback, sharing industrial sponsorship
contacts, and awarding official prizes to the most reproducible challenges entries.

We are looking forward to your proposals!

On behalf of the AASP TC Challenges Subcommittee
Emmanuel Vincent, Chair