Blizzard Challenge
From SynSIG
In order to better understand and compare research techniques in building corpus-based speech synthesizers on the same data, the Blizzard Challenge has been devised. The basic challenge is to take the released speech database, build a synthetic voice from the data and synthesize a prescribed set of test sentences. The sentences from each synthesizer are then evaluated through listening tests.
The tools for running your own Blizzard-style listening test and the submissions and listening test results from some previous Challenges are also available: