The effect of a standing sound field on a slow stream discharged from a porous wall

1963 ◽  
Vol 11 (4-6) ◽  
pp. 361-375 ◽  
Author(s):  
J. Kestin ◽  
L. N. Persen
Keyword(s):  
Sound Field ◽  
Porous Wall ◽  
Standing Sound

108 Experimental study on the formation of bubble cluster in a standing sound field

2012 ◽  
Vol 2012.48 (0) ◽  
pp. 20-21
Author(s):  
Taiichi TARUSAWA ◽  
Torn FUKUSHI ◽  
Minori SHIROTA ◽  
Takao INAMURA
Keyword(s):  
Experimental Study ◽  
Sound Field ◽  
Bubble Cluster ◽  
Standing Sound

Effect of Sound on Heat Transfer from a Horizontal Circular Cylinder at Large Wavelengths

1965 ◽  
Vol 7 (2) ◽  
pp. 127-130 ◽  
Author(s):  
B. H. Lee ◽  
P. D. Richardson
Keyword(s):  
Heat Transfer ◽  
Boundary Layer ◽  
Circular Cylinder ◽  
Layer Thickness ◽  
Boundary Layer Thickness ◽  
Sound Field ◽  
Practical Relevance ◽  
Local Effects ◽  
Horizontal Circular Cylinder ◽  
Standing Sound

The practical relevance of investigations of the effect of oscillations on convective heat transfer is discussed. Some experiments on overall heat transfer from a horizontal heated circular cylinder in a transverse, horizontal standing sound field are reported. Observations of local effects of sound on boundary layer thickness and heat transfer are described, and a correlation of heat transfer spanning all sound intensities is suggested in the light of these observations. The correlation is fitted well by the data, and thus provides adducive evidence for the explanation of the phenomena observed.

Bubble dynamics in a standing sound field: The bubble habitat

2011 ◽  
Vol 130 (5) ◽  
pp. 3370-3378 ◽  
Author(s):  
P. Koch ◽  
T. Kurz ◽  
U. Parlitz ◽  
W. Lauterborn
Keyword(s):  
Bubble Dynamics ◽  
Sound Field ◽  
Standing Sound

Decay of Temporary Threshold Shift in Noise

1973 ◽  
Vol 16 (2) ◽  
pp. 267-270 ◽  
Author(s):  
John H. Mills ◽  
Seija A. Talo ◽  
Gloria S. Gordon
Keyword(s):  
Sound Field ◽  
Threshold Shift ◽  
Temporary Threshold Shift ◽  
Octave Band ◽  
Band Noise ◽  
Lower Asymptote

Groups of monaural chinchillas trained in behavioral audiometry were exposed in a diffuse sound field to an octave-band noise centered at 4.0 k Hz. The growth of temporary threshold shift (TTS) at 5.7 k Hz from zero to an asymptote (TTS ∞ ) required about 24 hours, and the growth of TTS at 5.7 k Hz from an asymptote to a higher asymptote, about 12–24 hours. TTS ∞ can be described by the equation TTS ∞ = 1.6(SPL-A) where A = 47. These results are consistent with those previously reported in this journal by Carder and Miller and Mills and Talo. Whereas the decay of TTS ∞ to zero required about three days, the decay of TTS ∞ to a lower TTS ∞ required about three to seven days. The decay of TTS ∞ in noise, therefore, appears to require slightly more time than the decay of TTS ∞ in the quiet. However, for a given level of noise, the magnitude of TTS ∞ is the same regardless of whether the TTS asymptote is approached from zero, from a lower asymptote, or from a higher asymptote.

Modified Earpieces and CROS for High Frequency Hearing Losses

1968 ◽  
Vol 11 (1) ◽  
pp. 204-218 ◽  
Author(s):  
Elizabeth Dodds ◽  
Earl Harford
Keyword(s):  
Hearing Loss ◽  
Hearing Aids ◽  
High Frequency ◽  
Hearing Aid ◽  
Sound Field ◽  
Intensity Level ◽  
Test Results ◽  
High Frequency Hearing Loss ◽  
Increased Sensitivity ◽  
Difficult Cases

Persons with a high frequency hearing loss are difficult cases for whom to find suitable amplification. We have experienced some success with this problem in our Hearing Clinics using a specially designed earmold with a hearing aid. Thirty-five cases with high frequency hearing losses were selected from our clinical files for analysis of test results using standard, vented, and open earpieces. A statistical analysis of test results revealed that PB scores in sound field, using an average conversational intensity level (70 dB SPL), were enhanced when utilizing any one of the three earmolds. This result was due undoubtedly to increased sensitivity provided by the hearing aid. Only the open earmold used with a CROS hearing aid resulted in a significant improvement in discrimination when compared with the group’s unaided PB score under earphones or when comparing inter-earmold scores. These findings suggest that the inclusion of the open earmold with a CROS aid in the audiologist’s armamentarium should increase his flexibility in selecting hearing aids for persons with a high frequency hearing loss.

Sound Field Reproduction Using Ambisonics and Irregular Loudspeaker Arrays

2014 ◽  
Vol E97.A (9) ◽  
pp. 1832-1839 ◽  
Author(s):  
Jorge TREVINO ◽  
Takuma OKAMOTO ◽  
Yukio IWAYA ◽  
Yôiti SUZUKI
Keyword(s):  
Sound Field
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