Full catalogue

The current data package includes 1,090 hours of recorded speech (as .wav files) from about 1,130 participants, including those with ALS, cerebral palsy, Down syndrome, Parkinson’s disease and those who have had a stroke. The download also includes text of the original speech prompts and a transcript of the participants’ responses. A subset includes annotations describing the speech characteristics and how they affect participants. The metadata include differential diagnostic patterns of dysarthria for some of the waveforms: these are perceptual scales rating the intelligibility, breathiness, strain, naturalness, etc. of the speech file, as judged by a speech pathologist. The differential diagnostic patterns will eventually be available for fifteen waveforms per participant, though early data releases may not include 15 rated files per participant. Speech samples are of three types. First, computer commands are read sentences, designed to mimic utterances used to get information from a digital assistant. Second, novel sentences are extracted from Project Gutenberg novels, simplified in some cases to make them more readable, and read by the participant. Third, spontaneous speech samples are the response of the participant to a question about culture or daily life. A typical recording is one sentence, although some recordings may include one word or multiple words or utterances. It varies from speaker to speaker.