scholarly journals Sound pressure distribution and power flow within the gerbil ear canal from 100Hzto80kHz

2007 ◽  
Vol 122 (4) ◽  
pp. 2154-2173 ◽  
Author(s):  
Michael E. Ravicz ◽  
Elizabeth S. Olson ◽  
John J. Rosowski
Keyword(s):  
Pressure Distribution ◽  
Power Flow ◽  
Sound Pressure ◽  
Ear Canal

scholarly journals Sound pressure distribution in the human ear canal

1983 ◽  
Vol 73 (S1) ◽  
pp. S59-S60 ◽  
Author(s):  
M. R. Stinson ◽  
E. A. G. Shaw
Keyword(s):  
Pressure Distribution ◽  
Sound Pressure ◽  
Ear Canal ◽  
Human Ear

The Occlusion Effect in Bone Conduction Hearing

1965 ◽  
Vol 8 (2) ◽  
pp. 137-148 ◽  
Author(s):  
David P. Goldstein ◽  
Claude S. Hayes
Keyword(s):  
Sound Pressure Level ◽  
Sound Pressure ◽  
Bone Conduction ◽  
Pressure Level ◽  
Ear Canal ◽  
Significant Difference ◽  
Threshold Measure ◽  
Level Shifts ◽  
Positive Correlations ◽  
Occlusion Effect

This experiment tested the hypothesis that the occlusion effect is accompanied by an increase in sound pressure level in the external auditory canal. Pure tone bone conduction thresholds and sound pressure levels were measured, first with the ear canal open, then with the ear canal closed, at two positions of the bone vibrator and at five frequencies in 28 normal listeners. Statistical analyses revealed a significant difference between measures at 250, 500, and 1 000 cps but not at 2 000 and 4 000 cps. Average sound pressure level shifts tended to be larger than their threshold measure counterparts. The two measures, nevertheless, yielded positive correlations.

Probe-Tube Microphone Measures of Ear-Canal Sound Pressure Levels in Infants and Children

1989 ◽  
Vol 10 (4) ◽  
pp. 254-258 ◽  
Author(s):  
Judith A. Feigin ◽  
Judy G. Kopun ◽  
Patricia G. Stelmachowicz ◽  
Michael P. Gorga
Keyword(s):  
Sound Pressure ◽  
Infants And Children ◽  
Ear Canal ◽  
Sound Pressure Levels ◽  
In Infants And Children

Sound Pressure Distribution of Car Interior and Influence of Wall

2020 ◽  
Vol 2020 (0) ◽  
pp. 341
Author(s):  
Yoshio KUROSAWA ◽  
Manabu SASAJIMA ◽  
Mitsuharu WATANABE
Keyword(s):  
Pressure Distribution ◽  
Sound Pressure

scholarly journals Protective earphones and human hearing system response to the received sound frequency signals

2018 ◽  
Vol 37 (4) ◽  
pp. 1030-1036 ◽  
Author(s):  
Niloofar Ziayi Ghahnavieh ◽  
Siamak Pourabdian ◽  
Farhad Forouharmajd
Keyword(s):  
Hearing Loss ◽  
Noise Reduction ◽  
Sound Pressure ◽  
Pressure Sensors ◽  
Sound Level ◽  
System Response ◽  
Ear Canal ◽  
Labview Software ◽  
Negative Effect ◽  
Sound Reduction

Sound is one of the most important problems in industrial environments, and it causes hearing loss at different frequencies in the workforce. Incorrect fitting of hearing protector has a negative effect on noise reduction. The present study was conducted with the aim of determination of the effective frequencies on hearing loss and variations of the sound level in different frequencies after placing the earplug. A model of ear canal with different materials was simulated. Sound pressure sensors and earplugs were placed in both sides of the ear canal. The rates of sound reduction in octave frequency signals were calculated for the simulated canal of different materials, in different distances between the microphone and the earplug with Labview software. The results of sound simulation in octave frequency signals showed that by increasing the frequency, the rates of sound reduction in different conditions also had an increasing trend. The obtained peak rates for all the situations coincided with each other at fixed frequencies. In most cases, a noise reduction in the frequency of 4000 Hz showed a high number. The maximum sound reduction was observed at 25.5 mm at frequencies below 250 Hz, which was similar to the average of human ear canal length; so the simulated model can be used to determine the performance of the protective earphones and test them at different frequencies and sound pressure levels.

Transverse variations of sound pressure in an ear canal occluded by a hearing aid

2006 ◽  
Vol 120 (5) ◽  
pp. 3159-3159
Author(s):  
Michael R. Stinson ◽  
Gilles A. Daigle
Keyword(s):  
Sound Pressure ◽  
Hearing Aid ◽  
Ear Canal

The spatial distribution of sound pressure within the human ear canal

2005 ◽  
Vol 117 (4) ◽  
pp. 2564-2564
Author(s):  
Michael R. Stinson ◽  
Gilles A. Daigle
Keyword(s):  
Spatial Distribution ◽  
Sound Pressure ◽  
Ear Canal ◽  
Human Ear
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