scholarly journals Revealing sound-induced motion patterns in fish hearing structures in 4D: A standing wave tube-like setup designed for high-resolution time-resolved tomography

2021 ◽  
Author(s):  
Isabelle P. Maiditsch ◽  
Friedrich Ladich ◽  
Martin Heß ◽  
Christian M. Schlepütz ◽  
Tanja Schulz-Mirbach
Keyword(s):  
Standing Wave ◽  
Morphological Diversity ◽  
Wave Tube ◽  
Time Resolved ◽  
Motion Patterns ◽  
Bony Fishes ◽  
Spatial Dimensions ◽  
Spatio Temporal ◽  
Standing Wave Tube ◽  
Fish Hearing

Modern bony fishes possess a high morphological diversity in the auditory structures and their auditory capabilities. Yet, our knowledge of how the auditory structures such as the otoliths in the inner ears and the swim bladder work together remains elusive. Gathering experimental evidence on the in-situ motion of fish auditory structures while avoiding artifacts caused by surgical exposure of the structures has been challenging for decades. Synchrotron radiation-based tomography with high spatio-temporal resolution allows to study morphofunctional issues non-invasively in an unprecedented way. We therefore aimed to develop an approach that characterizes the moving structures in 4D (= three spatial dimensions+time). We designed a miniature standing wave tube-like setup to meet both the requirements of tomography and those of tank acoustics. With this new setup, we successfully visualized the motion of isolated otoliths and the auditory structures in zebrafish (Danio rerio) and the glass catfish (Kryptopterus vitreolus).

A New Method to Measure the Absorption Coefficient of the Automotive Driving Room Based on the Sound Pressure Delaying

2011 ◽  
Vol 415-417 ◽  
pp. 1350-1354
Author(s):  
Cong Yun Zhu ◽  
Jian Ru Shi ◽  
Shu Feng Yang
Keyword(s):  
Absorption Coefficient ◽  
Standing Wave ◽  
Sound Pressure ◽  
Measurement Methods ◽  
The Other ◽  
New Method ◽  
Wave Tube ◽  
Absorption Function ◽  
Equal Distance ◽  
Standing Wave Tube

Absorption coefficient is an important parameter of the absorption function of the absorption material. Traditional measurement methods of absorption coefficient are standing wave tube and reverberation which have some shortcomings. In this paper, phase of the sound pressure measured by two equal distance microphones placed in the front of the absorption material is delayed in order to attain the absorption coefficient. At the last, an experiment for one absorption material is carried out, the experiment results compare with the results of the other methods above mentioned that denotes that the theory is correct and practicable.

Compressible flow of liquid in a standing wave tube

2005 ◽  
Vol 536 ◽  
pp. 321-345 ◽  
Author(s):  
YOUNGSHIK SHIN ◽  
JAEWON CHUNG ◽  
NICK KLADIAS ◽  
ELIAS PANIDES ◽  
GERALD A. DOMOTO ◽  
...  
Keyword(s):  
Compressible Flow ◽  
Standing Wave ◽  
Wave Tube ◽  
Standing Wave Tube

Sound Absorption Properties of Polyester Fibers Needle-Punched Nonwoven Fabrics

2011 ◽  
Vol 332-334 ◽  
pp. 1300-1303
Author(s):  
Ke Tian Guan ◽  
Xu Pin Zhuang ◽  
Xiao Ning Jiao ◽  
Men Qin Li ◽  
Hong Jun Li ◽  
...  
Keyword(s):  
Surface Structure ◽  
Standing Wave ◽  
Sound Absorption ◽  
Fiber Diameter ◽  
Absorption Property ◽  
Wave Tube ◽  
Absorption Properties ◽  
Nonwoven Fabrics ◽  
Polyester Fibers ◽  
Standing Wave Tube

Polyester fiber needle-punched nonwovens with different structures were manufactured and their sound absorption properties were examined using the standing wave tube method. The results show that the sound absorption property of the nonwovens depends on their thickness, needling intensity, fiber diameter and surface structure.

Errors in the measurement of transmission loss in a standing wave tube

2017 ◽  
Vol 65 (3) ◽  
pp. 174-182 ◽  
Author(s):  
Lang Dong ◽  
Yansong Wang ◽  
Hui Guo ◽  
Ningning Liu
Keyword(s):  
Standing Wave ◽  
Transmission Loss ◽  
Wave Tube ◽  
Standing Wave Tube
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