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Foreign Accent and Forensic Speaker Identification in Voice Lineups: The Influence of Acoustic Features Based on Prosody
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Detecting Foreign Accents in Song.

Marly Mageau1, Can Mekik2, Ashley Sokalski3

  • 1Regulatory Affairs, Canadian Transportation Agency, Gatineau, Québec, Canada.

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|July 10, 2019
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Summary
This summary is machine-generated.

Singing makes accents harder to detect because melody and rhythm mask pronunciation cues. Listeners identify native English speakers better in speech than in song, despite singers altering pitch and duration.

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Area of Science:

  • Phonetics
  • Psychoacoustics
  • Sociolinguistics

Background:

  • Accents in spoken language are readily perceived.
  • Singing may alter accent perception and production.
  • Understanding accent perception in singing is crucial for linguistics and music.

Purpose of the Study:

  • To investigate the perception and production of English accents in sung versus spoken contexts.
  • To determine if accents are more or less detectable in song compared to speech.
  • To analyze acoustic differences in vowels produced by native and non-native English speakers during singing and speaking.

Main Methods:

  • Perception experiment: Participants judged native-like qualities of sung and spoken passages by native and non-native English speakers.
  • Production experiments: Acoustic analysis of vowels (pitch, duration, F1, F2) in sung and spoken productions by native and non-native English speakers.
  • Comparison of accent identification accuracy between sung and spoken stimuli.

Main Results:

  • Participants were more accurate in identifying native speakers in spoken passages than in sung passages.
  • Accents were perceived as more native-like in song than in speech.
  • Singing altered vowel pitch and duration for both native and non-native speakers, but vowel quality remained largely unchanged.
  • Melody and rhythm in song impacted suprasegmental pronunciation features, while segmental features were preserved.

Conclusions:

  • Accent detection is more challenging in singing than in speech.
  • The melodic and rhythmic structure of songs masks intonational cues essential for accent identification.
  • Pronunciation changes in singing primarily affect suprasegmental aspects, leaving segmental features relatively intact, which contributes to reduced accent detectability.