For telecommunication, radio waves are used in the air, whereas acoustic waves are used in underwater using transducers and hydrophones. And the underwater acoustic communication channels are very complicated than in the air, because of vertical distribution of acoustic velocity according depths, and reflections from boundaries like as surface or bottom, and etc. For the implementation of the u...

To the extent that sensorineural systems are efficient, redundancy should be extracted to optimize transmission of information, but perceptual evidence for this has been limited. Stilp and colleagues recently reported efficient coding of robust correlation (r = .97) among complex acoustic attributes (attack/decay, spectral shape) in novel sounds. Discrimination of sounds orthogonal to the corre...

This paper presents an objective singing quality evaluation approach based on a study of the relationship between acoustic measurements and perceptual ratings of singing voice quality. Individual perceptual criteria’s contributions to the overall rating are also investigated to find significant evaluation terms. Experimental results show that critical perceptual criteria for singing evaluation ...

diesel exhaust particles are a complex mixture of thousands of gases and fine substances that contain more than 40 different environmental contaminants. being exposed to these exhaust particles (called soot) can cause lung damage and respiratory problems. diesel particulate filters are used in many countries for mobile sources as a legal obligation to decrease harmful effect of these fine parti...

BACKGROUND There is no consensus about the value of objective measurements of nasal patency. OBJECTIVE To assess the correlation between the subjective sense of nasal patency and the outcomes found with rhinomanometry and acoustic rhinometry. TYPE OF REVIEW Structured literature search. SEARCH STRATEGY AND EVALUATION METHOD: Review of English-language articles in which correlations were sou...

This paper describes two acoustic impact localization techniques for tangible interface applications. A rising-edge detection method was used for the time delay of arrival (TDOA) approach and a cross correlation analysis for the location template matching (LTM) approach. These methods were experimentally investigated using tangible objects of different materials with different types of acoustic...

This paper concerns the relationships amongst acoustic phonetic features of speech signals, perceived vocal effort, and speech clarity. It is presented from a statistical analysis of a good number of subjective testing on an anechoic speech corpus with 5 different vocal efforts, namely hushed, normal, raised, loud, and shouted, with an aim to map objective acoustic phonetic features onto subjec...