INTERSPEECH 2012
13th Annual Conference of the International Speech Communication Association

Portland, OR, USA
September 9-13, 2012

Investigating Syllabic Prominence With Conditional Random Fields and Latent-Dynamic Conditional Random Fields

Francesco Cutugno (1), Enrico Leone (1), Bogdan Ludusan (2), Antonio Origlia (1)

(1) LUSI-Lab, Dept. of Physics, University of Naples “Federico II”, Italy
(2) CNRS-IRISA, Rennes, France

The present study performs an investigation on several issues concerning the automatic detection of prominences. Its aim is to offer a better understanding of the prominence phenomenon in order to be able to improve existent prominence detection systems. The study is threefold: first, the presence of hidden dynamics in the sequence of prominent and non-prominent syllables is tested by comparing results obtained with CRFs and LDCRFs. Second, the size of the context to be taken into account when determining prominence was examined and third, a new set of features was investigated. The results obtained show that LDCRFs systematically outperforms CRFs, that a context of three syllables is generally sufficient for prominence detection, that syllable length is a powerful feature to include and that new features concerning pitch movements we introduce here can substitute heuristic measures used in previous works.

Index Terms: syllabic prominence, conditional random fields

Full Paper

Bibliographic reference.  Cutugno, Francesco / Leone, Enrico / Ludusan, Bogdan / Origlia, Antonio (2012): "Investigating syllabic prominence with conditional random fields and latent-dynamic conditional random fields", In INTERSPEECH-2012, 2402-2405.