To clarify the acoustic features that distinguish the alveolo-palatal affricates [t] from the alveolar affricate [ts] or the alveolar fricative [s], Japanese words with these consonants, pronounced by single and multiple native speakers of Japanese, were analyzed with a one-third octave bandpass filter. In the frequency range of 2500–4000 Hz, [t] had much higher intensity than [ts] or [s]. In...

All spoken languages show rhythmic patterns. Recent work with a number of different languages (English, Japanese, Mandarin Chinese, and French) suggests that metrically (hierarchically) assigned stress levels of the utterance show strong correlations with the amount of jaw displacement, and corresponding F1 values. This paper examines some articulatory and acoustic correlates of Spanish rhythm;...

The cognition test results of audio (A) and audio-visual (AV) effects on nine English emotions in a short sentence were compared to the physio-acoustic features of sound used for the cognition tests. Two groups of Japanese learners of English (JL2) and one group of English speakers (EL1) participated in these A and AV cognition tests. In the physioacoustic analyses we used F0 and intensity cont...

A nylon bar, with the head notched to make easy adequete contact with the short process of the malleus, was used for an acoustic probe. The first part of this paper deals with the acoustic properties of the nylon probe in comparison with those of a piano wire probe and a silver wire probe. The following results are obtained : (1) Clinically the most suitable length of the nylon probe was 8cm. (...

The power transfer between crossed laser beams made possible by an ion-acoustic (sound) wave (grating) has been studied theoretically2–5 and experimentally.6,7 Previously,4 we made a two-dimensional analysis of the power transfer between beams with top-hat intensity profiles in a homogeneous plasma. In this article we extend our previous analysis to include three dimensions and arbitrary intens...

We present tomographic imaging of biological tissues by use of microwave-induced acoustic signal. It was demonstrated that the acoustic signal was proportional to the intensity of the incident microwave and was related to the absorption property of microwave in the medium. Pulsed microwave radiation was used to illuminate the samples. Absorbed microwave energy caused thermoelastic expansion tha...

The paper reports on an elicited production study that investigates prosodic marking of narrow focus in contact varieties of South African English. The acoustic analysis of fundamental frequency and intensity in narrow focus is presented and discussed. The results suggest that intensity is used differently in the contact varieties as compared to the standard variety with potential perceptual co...

With the assumption that the ocean-acoustic ambient noise field is a random process that obeys the central limit theorem, many useful statistical properties of subsequent intensity and mutual intensity measurements are readily deduced by respective applications of coherence theory and estimation theory.

On the basis of photo acoustic effect, photo acoustic spectroscopy is an unusual form of spectroscopy which uses both light and sound and is based on the absorption of electromagnetic radiation by analyte molecule. Photo acoustic effect offers a minimal or no sample preparation, the ability to look at opaque and scattering sample and the capability to perform depth profiling experiment. These f...