BACKGROUND Laryngopharyngeal reflux is a prevalent, not well-understood disease affecting a high proportion of patients who seek laryngology consultation. The objective of this prospective case series is to explore the subjective and objective voice modifications in Laryngopharyngeal reflux (LPR), especially the usefulness of acoustic parameters as treatment outcomes, and to better understand t...

This study aimed at establishing how vocal parameters change following a period of abstinence from cigarette smoking. The voices of 18 smokers were examined after one week and then one month of cigarette abstinence. Changes in several acoustic parameters (jitter, shimmer, harmonics-to-noise ratio (HNR)) were analysed. During abstinence, jitter and shimmer decreased significantly, whereas HNR in...

Results: Th e results obtained for mean fundamental frequency and shimmer were not signifi cantly diff erent between the 2 computer programs. Th e results for jitter and noise-to-harmonics ratio, however, were signifi cantly diff erent between Praat and MDVP (P < 0.001). Th ere was a strong correlation for mean fundamental frequency and jitter values. Th e correlations for shimmer values and th...

In this work several approaches of amplitude contours estimation for shimmer measurement are analyzed and compared. The approaches covered incorporate a waveform matching procedure proposed in this work, based on existent least squares measures. The experimental comparisons evaluate each method’s sensitivity to periodicity perturbations like jitter, shimmer, and noise, as well as their combinat...

Voice signal contains intrinsic irregularities which become more evident in the presence of pathologies. The acoustic parameters are very useful for the clinical assessment of voice and pathologies detection. Most existing voice models handle irregularities as additive noise and not as information carriers. In this work, a new model is proposed allowing to generate synthesized voices with previ...

This paper highlights the results of an investigation of several features across the style classes of the “simulated” portion of the SUSAS database. The features considered here include a recently-introduced measure of speaking rate called mrate, measures of shimmer, measures of jitter, and features derived from fundamental frequency (F0) contours. The F0 contour features are the means of F0 an...

Jitter and shimmer voice-quality measurements have been successfully used to detect voice pathologies and classify different speaking styles. In this paper, we investigate the usefulness of jitter and shimmer voice measurements in the framework of the speaker diarization task. The combination of jitter and shimmer voice-quality features with the long-term prosodic and shortterm spectral feature...

This chapter presents an oesophageal speech enhancement algorithm. Such an exceptionally special type of voice is due to the laryngectomy undergone by those persons with larynx cancer. An oesophageal voice has extremely low intelligibility. The parameter values characterising the voice go beyond normal levels. This chapter proposes a method to improve its quality, which consists in improving Sh...

SHiMmer, an active-sensing platform, combines wireless communication with solar energy harvesting to provide long-lasting structural health monitoring (SHM). While reducing the need for post-deployment physical human interaction, the platform must adapt performance to accommodate the energy availability. For example, on sunny days, SHiMmer can perform highly accurate tasks requiring more extens...