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This paper describes a setup to synchronize data used to track speech articulators during speech production. Our method couples together an ultrasound, an electromagnetic and an audio system to record speech sequences. The coupling requires a precise temporal synchronization, to know exactly the delay between the recording start of each modality, and to know the sampling rate of each modality. A complete setup and methods for automatically synchronizing data are described. The aim is to get a fast, low-cost and easily reproducible acquisition system in order to temporally align data.