DoReCo is a French-German collaborative project that brings together spoken language corpora from about 50 languages, extracted from documentations of small and often endangered languages. This resource will be used for cross-linguistic research on phonetic lengthening processes and on information rate, and will be made available for other research. DoReCo is running from 2019 to 2022.


The graduate school IGRA (Interaction of grammatical building blocks; spokesperson: Gereon Müller) aims at investigating the interaction of rules, operations, constraints, schemata, and extralinguistic factors in the phonology, morphology, and syntax of natural languages. Within the IGRA research program, four main types of interactions are identified: excitatory sequential interactions (feeding, counter-bleeding), inhibitory sequential interactions (bleeding, counter-feeding), inhibitory simultaneous interactions (competition), and excitatory simultaneous interactions (cooperation).


RuReg is an acoustic speech database containing dialect recordings from numerous regions in Russia, including the European North, South and the Far East. With several hundred hours of recordings accumulated on more than 50 field trips led by Christian Sappok since 1991, RuReg is one of the largest digital collections of Russian regional speech available. Recordings in RuReg are freely accessible via an online interface which allows users to listen to, download, and create unique reference links for recordings. The website is still under construction, more content will be uploaded soon.

Sound Comparisons

Sound Comparisons is a database and resource for exploring diversity in phonetics across language families from around the world. Originally a small study on Quechuan compiled by Paul Heggarty as early as 2001, it now covers hundreds of regional varieties from South America, Europe, and Vanuatu.

Urban Voices

The scientific network Urban Voices (funded by the DFG; speaker: Nadine Thielemann) seeks to explore sociolinguistic variation in everyday face-to-face-communication in German and Russian cities, particularly in the cities of Hamburg and St. Petersburg. The network brings together researchers from different fields using a wide array of linguistic methods on a common set of natural recorded data.