Aspiration in fricative and nasal consonants: Properties and detection

The Journal of the Acoustical Society of America
Saswati RabhaS R Mahadeva Prasanna

Abstract

Unlike aspiration in stops, occurrence of aspiration in non-stop consonants is quite rare. Most of the languages that have aspirated non-stop consonants are low-resource languages. Hence, data driven, quantitative, and statistical analysis of their aspiration phenomena is fairly limited. Rabha and Angami are considered in this study, as previous studies have confirmed the existence of aspiration contrast in fricatives and nasals. This study reports the acoustic characteristics of aspiration in stops, fricatives, and nasals. Among them, distinguishing the aspirated fricatives and aspirated nasals from their unaspirated counterparts is a challenging task. A set of acoustic features is proposed to automatically detect the presence of aspiration in fricatives and nasals. Acoustic features, such as vocal tract constriction (VTC), normalized autocorrelation peak strength (NAPS), strength of excitation (SoE), and variance of successive epoch intervals (VSEI) are used to detect aspiration in fricatives and nasals. These features are extracted from zero-frequency filtered signal of the speech sounds, as it preserves the aspiration information. Results show that VTC, NAPS, and SoE can detect aspiration in nasals, whereas SoE and VSEI can...Continue Reading

References

Oct 18, 2014·The Journal of the Acoustical Society of America·Vinay Kumar MittalPeri Bhaskararao
Nov 7, 2017·Journal of Phonetics·Arthur S Abramson, D H Whalen

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Citations

Aug 4, 2021·The Journal of the Acoustical Society of America·Magdalena PiotrowskaBożena Kostek

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