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Whereas nasalance value estimates the relative amount of nasal energy compared to the total acoustic energy (oral and nasal), vocalized in a given production, it is assumed that noise external to the glottal source, as the place where friction is generated may have an impact on nasalance values.
15) At first glance, this phonation looks somewhat similar to the previous three; there is a very even tone production with regular vibrato and a great deal of acoustic energy in the upper part of the spectrum.
For all four groups of toys, the greatest amount of continuous acoustic energy was recorded between 500 Hz and 4 000 Hz, with 8 000 Hz and 16 000 Hz also included for the hand-held group of toys.
Sample rates used for recording were well above the frequency range where most of the acoustic energy in black drum calls is concentrated (<300 Hz) and therefore aliasing (i.
The ultimate goal would be to build tools that soldiers could carry to detect IEDs in theater by delivering acoustic energy from a safe distance, Adams said.
Improvements in understanding the propagation of acoustic energy in environments like the Gulf of Mexico can contribute to assessments of both the impact of petroleum exploration efforts and the contamination due to accidental releases.
For this, it is necessary to apply either a high gas velocity compared to the velocity necessary for fluidizing primary particles, or a lower velocity but with addition of external energy like vibration, magnetic pulsation and acoustic energy to disintegrate the cohesive structure and to facilitate the fluidization of the agglomerates.
Ultrasonic waves pass through water, the coupling medium, and into drug discovery samples as broad beams of acoustic energy.
Noise levels showed a distinct diel pattern, with nearly twice the acoustic energy at night as during the day.
In the case of subsea, welded-in valves, some acoustic energy escapes through the piping and also to the water, reducing the signal levels that reach the acoustic leak sensors.
The Score project, led by the University of Nottingham, aims to develop a biomass stove that converts heat into acoustic energy and then into electricity, all in one unit.
Ultrasonic testing uses high frequency acoustic energy that is transmitted into a casting.