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 and the project website is being regularly updated.


The graduate school IGRA (Interaction of grammatical building blocks; speaker: 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 Russian dialect recordings from numerous regions in Russia, including the European North, South and the Far East. With several hundred hours of recordings accumulated on over 50 field trips led by Christian Sappok since 1991, RuReg is one of the largest digital collections of Russian regional speech available. A key feature of RuReg is that the data are made freely accessible to a broad audience through an online interface which allows users to listen to and download any recordings. No registration required. RuReg uses an intuitive and transparend identifier system, allowing users to cite self-selected parts of recordings in a scientifically adequate manner.

Urban Voices

The aim of the scientific network Urban Voices (funded by the DFG; speaker: Nadine Thielemann) was 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 brought together researchers from different fields using a wide array of linguistic methods on a common set of natural recorded data.

Sound Comparisons

Sound Comparisons is a database and resource for exploring diversity in phonetics across language families from around the world. From its humble beginnings as a small study on Quechuan in 2001, it has grown to cover hundreds of regional varieties in Europe, South America, and Vanuatu.

Linguists I have worked with

Siri Gjersøe
Frank Seifart