In-between speech: the speaker-specificity of non-speech vocalisations

在犯罪过程中，受害者或证人可能会听到犯罪者的声音，而不会看到他们的脸，然后被要求从声音识别队列中识别他们。在其他地方，一位分析师将犯罪者的有罪录音与嫌疑人的演讲样本进行了比较。法医语言科学领域关注的是如何从声音中识别一个人，但有时被比较的两个样本是不匹配的。在犯罪的情况下，可能没有多少真正的言语——相反，可能只有尖叫、呻吟或笑声，这些被称为非言语发声（nsv）。然而，在比较的样本或语音队列中，通常只有语音，而非svs被丢弃。目前尚不清楚的是，说话者能否准确地从nsv中识别出来。本项目将通过询问听者如何准确地识别不同非成音节元音类型的说话人，以及不同非成音节元音类型的说话人特有的声学特征如何变化来研究这个问题。它还将探索那些容易被非谓语动词识别的说话者是否也同样容易被他们的言语识别。这将通过提高我们对如何通过nsv识别说话人的理解而使该领域受益。

During a crime, victims or witnesses may hear a perpetrator's voice without seeing their face andare later asked to identify them from a voice identification line-up. Elsewhere, an analyst compares an incriminating recording of a perpetrator with a sample of a suspect's speech. The field of forensic speech science is concerned with how to identify a person from their voice, but sometimesthe two samples being compared are mismatched. In the situation of a crime, there may not be much actual speech - instead, there may be only screams, groans, or laughter, known as non-speech vocalisations (NSVs). In the compared sample or voice line-up, however, there is typically only speech, and NSVs are discarded. What is currently unknown is whether speakers can accurately be identified from NSVs. This project will investigate this question by asking howaccurately listeners identify speakers from different NSV types, and how speaker-specific acoustic features vary in different NSV types. It will also explore whether speakers who are easily recognised by their NSVs are also equally easily recognised by their speech. This will benefit the field by improving our understanding of how speakers can be identified by NSVs.