Acoustic analysis of tracheo-oesophageal voice: cepstral and voicing measures

Objectives: To develop an acoustic analysis protocol examining the correlations between acoustic and perceptual parameters in tracheo-oesophageal (TE) voices. Methods: ), the fraction of locally unvoiced frames (FLUF) and the cepstral peak prominence smoothed (CPPS). A perceptual evaluation was performed with the Impression, Noise, Fluency and quality of Voice (INFVo) scale. Results: on connected speech showed moderate correlations with I and Vo parameters (INFVo). Strong correlations between CPPS and FLUF were observed on both sustained vowel and connected speech. FLUF and CPPS moderately correlated with the I and Vo parameters; FLUF showed also a moderate correlation with the N parameter. Conclusions: CPPS and FLUF are evaluable on both sustained vowel and connected speech and are easy to analyse. The intercorrelation between them and the correlations with perceptual evaluation suggest their validity for TE voice assessment.