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- Title
Triplet loss-based embeddings for forensic speaker identification in Spanish.
- Authors
Maqueda, Emmanuel; Alvarez-Jimenez, Javier; Mena, Carlos; Meza, Ivan
- Abstract
With the advent of digital technology, it is more common that committed crimes or legal disputes involve some form of speech recording where the identity of a speaker is questioned [28]. In face of this situation, the field of forensic speaker identification has been looking to shed light on the problem by quantifying how much a speech recording belongs to a particular person in relation to a population. In this work, we explore the use of speech embeddings obtained by training a CNN using the triplet loss. In particular, we focus on the Spanish language, which has not been extensively studied. We propose extracting the embeddings from speech spectrograms samples, then explore several configurations of such spectrograms, and finally, quantify the embeddings quality. We also show some limitations of our data setting which is predominantly composed by male speakers. At the end, we propose two approaches to calculate the likelihood ratio given out speech embeddings and we show that triplet loss is a good alternative to create speech embeddings for forensic speaker identification.
- Subjects
SPANISH language; AUTOMATIC speech recognition; DIGITAL technology; SPECTROGRAMS
- Publication
Neural Computing & Applications, 2023, Vol 35, Issue 25, p18177
- ISSN
0941-0643
- Publication type
Article
- DOI
10.1007/s00521-021-06408-6