We propose novel approaches to cast the widely-used family of Dynamic Time Warping (DTW) distances and similarities as positive definite kernels for time series. To this effect, we provide new theoretical insights on the family of Global Alignment kernels introduced by Cuturi et al. (2007) and propose alternative kernels which are both positive definite and faster to compute. We provide experim...

This paper describes a methodology based on DTW technique (Dynamic Time Warping) applied to vocal audiometry to classify the different pathologies of hearing impaired. This methodology is validated on a population of ten subjects composed of seven individuals suffering perception, transmission or mixed deafness and three nondisabled subjects. The obtained results show that this method can be us...

The paper considers a prototype for automatic postsynchronization that consists of two basic components. As a first step, dynamic time warping is applied to compute the time-correspondence between an original utterance and an utterance that serves as the timing reference signal. In a second step, a time-scaling algorithm modifies the time structure of the original utterance accordingly. Informa...

Segmental factors can cause large temporal changes in local pitch contours associated with accented syllables (“accent curves”), but these changes are often not phonologically or perceptually significant. Yet, other factors can cause temporal changes that are smaller but nevertheless significant. We propose a model according to which accent curves are (phonologically, perceptually) equivalent w...

A time synchronization system is a helpful tool for different applications, such as language education and speech therapy. We present a system that performs temporal alignment of two utterances of the same phrase. The system consists of two parts. In the first part the time warping function is determined with Dynamic Time Warping (DTW). In the second part the time scale of one utterance is modi...

Article history: Received 5 January 2011 Accepted 16 June 2011 Available online 30 June 2011

Past research has shown that sound sequences not permitted in our native language may be distorted by our perceptual system. A well-documented example is vowel epenthesis, a phenomenon by which listeners hallucinate non-existent vowels within illegal consonantal sequences. As reported in previous work, this occurs for instance in Japanese (JP) and Brazilian Portuguese (BP), languages for which ...