This paper describes a rule-based approach for verifying a three-layer model that was proposed for modeling expressive speech perception. The three layers are expressive speech, semantic primitives, and acoustic features. In our previous work we built the model. In the current work, the built model is verified by creating rules with parameters that morph the acoustic characteristics of a neutra...

This study investigates the acoustic characteristics of /t/ lenition in conversational speech of Brunei Mandarin, a variety of Mandarin Chinese. Based on data from 20 Chinese Bruneians, /t/ lenition was found in the third-person pronoun t /ta/, which is frequently pronounced as h [ha]. Perceptual judgments, spectrographic analysis and acoustic measurements were conducted to examine the features...

Identifying acoustic sources in terms of their relative location is an important factor in active noise control. Traditional source localization measurements uses scalar pressure sensors which proved to be less accurate. Nehorai et al. proposed a different approach for source localization using vector natured acoustic intensity sensors. Four-dimensional (4-D) intensity based algorithm and three...

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Introduction When a liquid is irradiated with high-intensity and low-frequency ultrasound, acoustic cavitation occurs and there are some methods to determine and quantify this phenomenon. The existing methods for performing these experiments include sonochemiluminescence (SCL) and chemical dosimetric methods. The particles in a liquid decrease the ultrasonic intensity threshold needed for cavit...

The average acoustic power and intensity levels from diagnostic ultrasound machines at five major Hospitals in Benue State were measured using ultrasound power meter UPM-DT-10AV. The ultrasound machine at Christian Hospital Mkar, Immaculate Conception Hospital Makurdi, Federal Medical centre Makurdi, Myom Hospital Gboko and Lobi Specialist Hospital Makurdi were used for the research work. The u...

The time course of the recovery cycle (refractory period) of the acoustic startle response in rats was determined. The refractory effect was shown to be highly dependent upon the interval between two startle stimuli but independent of the intensity of the stimuli at a given interval, provided that the intensity of both stimuli was the same. A model based on summation of refractory effects to re...

OBJECTIVES/HYPOTHESIS During phonation, skewing of the glottal flow waveform (Q) refers to a phenomenon that occurs when the flow decelerates more rapidly than it accelerates. This skewing is clinically important because it increases the glottal efficiency, which is defined by the acoustic intensity (sound pressure level) divided by the subglottal pressure. Current theoretical models predict th...

Many auditory displays use acoustic attributes such as frequency, intensity, and spectral content to represent different characteristics of multidimensional data. This study demonstrated a perceptual interaction between dynamic changes in pitch and loudness, as well as perceived asymmetries in directional acoustic change, that distorted the data relations represented in an auditory display. Thr...