Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Holger Joost"'
Publikováno v:
The Journal of the Acoustical Society of America. 147(3)
The present study investigated the effect of the number of spectral components on the threshold in quiet of infrasound stimuli. Stimuli with one, two, or three sinusoidal components were presented monaurally to the ear with a low-distortion infrasoun
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5ecea3a13f2350719dc78d42f18297e8
https://pubmed.ncbi.nlm.nih.gov/32237799
https://pubmed.ncbi.nlm.nih.gov/32237799
Publikováno v:
Acta Acustica, Vol 5, p 4 (2021)
Several studies showed that the human auditory system is sensitive to infrasound. The present study investigated if non-linear processes within the ear generate distortion products, which may explain the auditory sensitivity to infrasound. Pure-tone
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a2a770225751957f3069c00f5dd52005
https://doi.org/10.1051/aacus/2020029
https://doi.org/10.1051/aacus/2020029
Publikováno v:
Journal of Cultural Heritage. 10:94-105
The critical condition of detaching historical murals in the Convent of Mustair (Switzerland) prompted a series of investigations and conservation actions over the last 40 years. After percussion tests in 1984/1992, an advanced technology of time-ave
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3b342185d75705e22612c838a089309a
https://doi.org/10.1016/j.culher.2008.06.011
https://doi.org/10.1016/j.culher.2008.06.011
Autor:
Holger Joost, Klaus D. Hinsch
Publikováno v:
Forschung. 32:17-20
Erschutterungen gefahrden historische Wandmalereien. Ein neues akustisch-optisches Messverfahren kann losen Putz aus der Ferne aufspuren
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::67f3873463ceafacbb9f037176e0a934
https://doi.org/10.1002/fors.200790002
https://doi.org/10.1002/fors.200790002
Autor:
Holger Joost, Klaus D. Hinsch
Publikováno v:
Optics Communications. 259:492-498
Time-averaging electronic speckle pattern interferometry (ESPI) allows to record the phase modulation of light that has propagated through a sound field. When such data are collected from different projection directions the three-dimensional spatial
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::45860a360c8b4121b3312be7b20070a9
https://doi.org/10.1016/j.optcom.2005.09.060
https://doi.org/10.1016/j.optcom.2005.09.060
Publikováno v:
Optics and Lasers in Engineering. 32:537-548
A commonly encountered problem in the conservation of historical murals is the identification of sections in the plaster that have detached from the wall and thus threaten to fall off. Commonly, walls are inspected by the acoustic response to a gentl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f61f47f5c84c8abf815975ee49d1a13a
https://doi.org/10.1016/s0143-8166(99)00075-5
https://doi.org/10.1016/s0143-8166(99)00075-5
Publikováno v:
Fringe 2005 ISBN: 3540260374
Tomographic ESPI is a powerful technique for the non-intrusive mapping of a 3D sound field. It has been shown that sophisticated processing of the measurement data from a state-of-the-art ESPI instrument in time-average mode allows to measure the spa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0ab80da26ae048dda209a11d7f9d7aee
https://doi.org/10.1007/3-540-29303-5_87
https://doi.org/10.1007/3-540-29303-5_87
Publikováno v:
SPIE Proceedings.
Parametric acoustic arrays are built to generate highly directional audio sound by nonlinear interaction of ultrasound. Arrays especially built for applications at high audio sound pressure use the most effective ultrasonic transducer for airborne so
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7fae05bbe5ba0f56b8e38c01acc073f4
https://doi.org/10.1117/12.612573
https://doi.org/10.1117/12.612573
Publikováno v:
Springer Proceedings in Physics ISBN: 9783540229964
The mechanical response of artwork to external loads from varying climate is monitored by time-records of displacement maps. These are obtained by digital correlation of series of images from either ordinary photographs in white-light illumination or
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a4f44451c898d537f0ff923fcb2d7d62
https://doi.org/10.1007/3-540-27176-7_58
https://doi.org/10.1007/3-540-27176-7_58
Publikováno v:
SPIE Proceedings.
In the conservation of historical murals it is important to identify loose plaster sections that threaten to fall off. Electronic speckle interferometry in combination with acoustic excitation of the object has been employed to monitor loose areas. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9ef9e58c1e369ff45fd26ee7c1bcf9fc
https://doi.org/10.1117/12.524885
https://doi.org/10.1117/12.524885