Ultrasound-induced neurostimulation has recently gained increasing attention, but little is known about the mechanisms by which it affects neural activity or about the range of acoustic parameters and stimulation protocols that elicit responses. We have established conditions for transcranial stimulation of the nervous system in vivo, using the mouse somatomotor response. We report that (1) con...

This paper derived four acoustic parameters reflecting voice quality improvement by voice training. Voice training corrects respiration, phonation, articulation, and facial expression. The purpose of this study is to develop acoustic parameters which quantitatively represent the quality of each training item. This paper examined six acoustical feature parameters on the performance as the measur...

Isolated neonatal rat ventricular cardiomyocytes were used to study the influence of ultrasound on the chronotropic response in a tissue culture model. The beat frequency of the cells, varying from 40 to 90 beats/min, was measured based upon the translocation of the nuclear membrane captured by a high-speed camera. Ultrasound pulses (frequency = 2.5 MHz) were delivered at 300-ms intervals [3.33...

Present work focuses on experimental acoustic characterization of an engine beauty cover in far field and near field conditions. Specifically, a comparison between results coming from the two different experimental measurement techniques is presented. Experimental campaign has been carried out on a car engine compartment at different operating conditions, by using on one hand a typical pressure...

The results of recent studies have established significant acoustic differences between tracheoesophageal (TE) and conventional esophageal speech. Listener preferences and acoustic differences between TE and excellent esophageal speech were examined in the present investigation. Although, as a group, TE speech was characterized by longer extended phonation, more syllables per breath, and increa...

Recent acoustic research has challenged the traditional understanding of the spirantization of Spanish /b d g/. We compare acoustic and EPG results on the realization of /d/ in different contexts. Whereas we largely confirm recent observations regarding the postfricative context, we also show that after nasals and laterals the intensity curve associated with the voiced obstruent /d/ does not of...

The goal of this paper is to examine the phonetic correlates of stress and accent in Catalan. We analyzed five acoustic correlates of stress (syllable duration, spectral balance, vowel quality, vowel pitch, and vowel intensity) in two stress conditions and in two accent conditions, which is to say, in stressed and unstressed syllables in both accented and unaccented environments (that is, appos...

High intensity acoustic radiation occurs when turbulence convects past airframe trailing edges. A mathematical model is developed to predict this acoustic radiation. The model is dependent on the local flow and turbulent statistics above the trailing edge of the flight vehicle airframe. These quantities are dependent on the jet and flight vehicle Mach numbers and jet temperature. A term in the ...