This study aims at exploring detailed acoustic characteristics of Mandarin sustained vowels based on magnetic resonance imaging (MRI). Cross-sectional area functions of the vocal tract for Mandarin vowels were extracted from volumetric MRI images obtained from eight Chinese speakers (six-male and two-female subjects). Acoustic analysis was performed for the vowels recorded from each speaker. Th...

OBJECTIVES Acoustic rhinometry is a rapid, reliable and non-invasive technique for the evaluation of conditions associated with impaired nasal patency. This study aimed to examine the intersession repeatability of acoustic rhinometry measurements of unilateral and combined nasal parameters in a group of healthy volunteers. METHODS Twenty healthy volunteers were studied. In each subject, acous...

The two measures typically used to assess the performance of an inversion mapping method, where the aim is to estimate what articulator movements gave rise to a given acoustic signal, are root mean squared (RMS) error and correlation. In this paper, we investigate whether “task-based” evaluation using an articulatory-controllable HMM-based speech synthesis system can give useful additional info...

Traditional high-voltage reactor monitoring and diagnosis research has problems such as high sampling demand, difficulty in noise reduction on site, many false alarms, lack of on-site data. In order to solve the above problems, this paper proposes an acoustic–electric fusion acquisition system defect method based pulse current ultrasonic detection signal. Using envelope peak signal basic data, ...

In September 2012, the free-falling, deep-diving instrument platform Deep Sound III descended to the bottom of the Tonga Trench, where it resided at a depth of 8515 m for almost 3 h, recording ambient noise data on four hydrophones arranged in a vertical L-shaped configuration. The time series from each of the hydrophones yielded the power spectrum of the noise over the frequency band 3 Hz to 3...

Present work focuses on the implementation of numerical and experimental analyses aimed to acoustic performances characterization of a composite sandwich panel used for a high-speed train. Firstly, an experimental and a numerical modal analyses are presented. Starting from both FE simulation and impact testing outcomes, it has been possible to carry out a correlation study through the computati...

. The present study deals with a voice quality that is referred to as “intelligible” or “articulate” voice. The purpose of the present study is to find a relation between the voice quality and acoustic features. The speech material is a read version of a simple short Japanese sentence “a o i so ra” in order to eliminate these linguistic variations. A set of speech samples uttered by fifteen adu...