Split Time Warping For Improved Automatic Time Synchronisation Of Speech
Pieter Soens, Werner Verhelst · VUBIR (Vrije Universiteit Brussel) · 2005
In this paper, we propose an improvement to the robustness of automatic time synchronization of speech. The basic synchronization system consists of two parts. In the first part the timing relationship between two speech utterances is measured using the well-known technique of dynamic time warping (DTW). In the second part, the original signal (source) is time scaled to synchronize it with the utterance that is used as the timing reference (reference). Both for DTW and for the time-scaling of speech, numerous solutions are already known to exist, but automatic time-synchronization often yielded distorted results in realistic situations [1][2]. This paper presents a dedicated time warping algorithm that overcomes many of the original problems and achieves a more robust automatic synchronization.