Skip to Main content Skip to Navigation
Conference papers

Impact of rhythm on forensic voice comparison reliability

Abstract : It is common to see voice recordings being presented as a forensic trace in court. Generally, a forensic expert is asked to analyze both suspect and criminals voice samples in order to indicate whether the evidence supports the prosecution (same-speaker) or defence (different-speakers) hypotheses. This process is known as Forensic Voice Comparison (FVC). Since the emergence of the DNA typing model, the likelihood-ratio (LR) framework has become the new golden standard in forensic sciences. The LR not only supports one of the hypotheses but also quantifies the strength of its support. However, the LR accepts some practical limitations due to its estimation process itself. It is particularly true when Automatic Speaker Recognition (ASpR) systems are considered as they are outputting a score in all situations regardless of the case specific conditions. Indeed, several factors are not taken into account by the estimation process like the quality and quantity of information in both voice recordings, their phonological content or also the speakers intrinsic characteristics, etc. All these factors put into question the validity and reliability of FVC. In our recent study, we showed that intra-speaker variability explains 2/3 of the system losses. In this article, we investigate the relations between intra-speaker variability and rhythmic parameters.
Complete list of metadata

Cited literature [64 references]  Display  Hide  Download
Contributor : Solange Rossato Connect in order to contact the contributor
Submitted on : Thursday, December 20, 2018 - 4:24:24 PM
Last modification on : Wednesday, November 3, 2021 - 6:46:39 AM
Long-term archiving on: : Friday, March 22, 2019 - 10:39:01 AM


Files produced by the author(s)


  • HAL Id : hal-01962531, version 1


Moez Ajili, Solange Rossato, Dan Zhang, Jean-François Bonastre. Impact of rhythm on forensic voice comparison reliability. Odyssey 2018 The Speaker and Language Recognition Workshop, Jun 2018, Les Sables d’Olonne, France. ⟨hal-01962531⟩



Record views


Files downloads