Speech sound disorders are almost always identified and described by their auditoryperceptual properties, as determined by adult listeners.Given that auditory-perceptual properties are extracted from the acoustic signal of speech, it follows that acoustic methods should be highly suited to the study of these disorders. But the capability for doing something is not the same as the necessity or e...

S U M M A R Y Acoustic wavefields produced using sources appropriately delayed in time can be focused at known positions and times in a heterogeneous medium. Seismoelectric conversion occurs if the acoustic focus point coincides with a discontinuity in electrical and hydrological medium properties, thus generating a current density. The current generates a potential difference, which can be obs...

Research into speech perception over the last fifty years has increasingly tended to support the conclusion that the adults’ perception of phonological categories is characterised by the use of multiple acoustic properties. There is typically no one acoustic property which is necessary and sufficient to signal the value of a phonological category, and there is a high degree of redundancy among ...

This paper experimentally investigates the acoustic properties of an orifice with bias flow under medium and high sound level excitation. The test included no bias flow and two bias speeds for three different frequencies. Experimental results are compared and discussed with theory. It is shown that bias flow makes the acoustic properties much more complex compared theory and with the no bias fl...

acoustic neuromas (an) are schwann cell-derived tumors that commonly arise from the vestibular portion of the eighth cranial nerve also known as vestibular schwannoma(vs) causes unilateral hearing loss, tinnitus, vertigo and unsteadiness. in many cases, the tumor size may remain unchanged for many years following diagnosis, which is typically made by mri. in the majority of cases the tumor is s...

A theoretical study analyzing three-dimensional combustion acoustic instabilities in a liquid propellant rocket engine combustor has been conducted. A linear theory based on Crocco’s pressure sensitive time lag model is used. To apply this theory the combustor is divided into two main components, including the combustion chamber and the converging part of the nozzle. The assumption of concentra...

Fisheries agencies around the Baltic Sea use hydroacoustics to assess stock sizes of herring and sprat. These assessments rely on the assumption that the acoustic properties of Baltic clupeids are the same as North Sea herring. This may lead to biased results, as system-specific differences in salinity and fish fat content may influence acoustic target strength. The acoustic properties of the B...