Acoustic analysis of whispery voice disguise in Chinese
Cuiling Zhang, Bin Lin · The Journal of the Acoustical Society of America · 2017
This paper investigates the auditory and acoustical features of disguised whispery voices, the acoustic difference between normal (non-disguised) voices and whispery voices, and the effect of whispery disguise on forensic speaker recognition. Recordings of eleven male college students’ normal voices and whispery disguised voices were collected. All their normal and whispery speech was acoustically analyzed and compared. The parameters average syllable duration, intensity, vowel formant frequencies, and long term average spectrum (LTAS) were measured and statistically analyzed. The effect of whispery disguise on forensic speaker recognition by auditory and phonetic-acoustic approach were evaluated. Correlation and regression analyses were made on the parameters of whispery voice and normal voice. To some extent, these simple regression models can be used for parameter compensation in forensic casework.