23 papers · ranked by Valyu relevance
Wu-Jung Lee, John R. Buck, Peter L. Tyack
Echolocation is a closed-loop active sensing modality in which animals not only choose how they move to acquire information, but also actively modulate incoming sensory (echo) information by shaping the acoustic signals they emit to probe the environment. While many models describe how echolocating animals react to…
L. J. Norman, L. Thaler
Humans can learn to use acoustic echoes to detect and classify objects. Echolocators typically use tongue clicks to induce these echoes, and there is some evidence that higher spectral frequency content of an echolocator’s tongue click is associated with better echolocation performance. This may be explained by the…
Alessia Tonelli, Luca Brayda, Monica Gori, Christian Friedrich Altmann
'Christian Friedrich Altmann'] Some blind people have developed a unique technique, called echolocation, to orient themselves in unknown environments. More specifically, by self-generating a clicking noise with the tongue, echolocators gain knowledge about the external environment by perceiving more detailed object…
Clarice Anna Diebold, Angeles Salles, Cynthia F. Moss
Target tracking and interception in a dynamic world proves to be a fundamental challenge faced by both animals and artificial systems. To track moving objects under natural conditions, agents must employ strategies to mitigate interference and conditions of uncertainty. Animal studies of prey tracking and capture…
Lore Thaler, Josefina Castillo-Serrano, Gavin Buckingham
Echolocation is the ability to use reflected sound to obtain information about the spatial environment. Echolocation is an active process that requires both the production of the emission as well as the sensory processing of the resultant sound. Appreciating the general usefulness of echo-acoustic cues for people, in…
Signe Brinkløv, M. Brock Fenton, John M. Ratcliffe
The discovery of ultrasonic bat echolocation prompted a wide search for other animal biosonar systems, which yielded, among few others, two avian groups. One, the South American Oilbird (Steatornis caripensis: Caprimulgiformes), is nocturnal and eats fruit. The other is a selection of diurnal, insect-eating swiftlets…
Santani Teng, Giovanni Fusco, Aarshil Patel
Blindness imposes constraints on the acquisition of environmental sensory information. To mitigate those constraints, some blind people employ active echolocation, a technique in which self-generated tongue “clicks” produce informative reflections from surrounding surfaces. Practitioners typically produce multiple…
Alessia Tonelli, Claudio Campus, Luca Brayda
This study investigated the influence of body motion on an echolocation task. We asked a group of blindfolded novice sighted participants to walk along a corridor, made with plastic sound-reflecting panels. By self-generating mouth clicks, the participants attempted to understand some spatial properties of the…
Carlos Tirado, Billy Gerdfeldter, Stina C. Kärnekull, Mats E. Nilsson
'Mats E. Nilsson'] Echolocation is the ability to gather information from sound reflections. Most previous studies have focused on the ability to detect sound reflections, others on the ability to localize sound reflections, but no previous study has compared the two abilities in the same individuals. Our study…
M. Jerome Beetz, Julio C. Hechavarría
Echolocation behavior, a navigation strategy based on acoustic signals, allows scientists to explore neural processing of behaviorally relevant stimuli. For the purpose of orientation, bats broadcast echolocation calls and extract spatial information from the echoes. Because bats control call emission and thus the…
K. A. Zaitseva, V. I. Korolev, A. V. Akhi, A. A. Akhi
An experimental study was conducted to research dolphin’s sonar adaptation capabilities for location of objects obscured by marine sediments. It was shown that dolphins are able to alter spectral and temporal characteristics of their location signals. Adaptive change of length, spectral width, and amplitude of impulses…
Takahiro Hiraga, Yasufumi Yamada, Ryo Kobayashi
Bats perceive the three-dimensional (3D) environment by emitting ultrasound pulses from their nose or mouth and receiving echoes through both ears. To detect the position of a target object, it is necessary to know the distance and direction of the target. Certain bat species synchronize the movement of their pinnae…
Thejasvi Beleyur, Holger R. Goerlitz
Active sensing animals perceive their surroundings by emitting probes of energy and analyzing how the environment modulates these probes. However, the probes of conspecifics can jam active sensing, which should cause problems for groups of active sensing animals. This problem was termed the cocktail party nightmare for…
Peter A. Wagenhäuser, Lutz Wiegrebe, A. Leonie Baier
Unlike all other remote senses like vision or hearing, echolocation allows estimating the distance of an object. Not only have echolocating bats and toothed whales been shown to measure distance by echolocation extremely precisely, distance information is even topographically represented by a neuro-computational map in…
Bo N. Schenkman, Vijay Kiran Gidla
Human echolocation describes how people use reflected sounds to obtain information about their ambient world. We investigated, by using auditory models, how three perceptual parameters, loudness, pitch and sharpness, determine echolocation. We used acoustic recordings from two previous studies, both from stationary…
Chen Ming, Stephanie Haro, Andrea Megela Simmons, James A. Simmons
Computational models of animal biosonar seek to identify critical aspects of echo processing responsible for the superior, real-time performance of echolocating bats and dolphins in target tracking and clutter rejection. The Spectrogram Correlation and Transformation (SCAT) model replicates aspects of biosonar imaging…
Frederike Dümbgen, Adrien Hoffet, Mihailo Kolundžija, Adam Scholefield + 1 more
'Adam Scholefield' 'Martin Vetterli'] Abstract—For safe and efficient operation, mobile robots need to perceive their environment, and in particular, perform tasks such as obstacle detection, localization, and mapping. Although robots are often equipped with microphones and speakers, the audio modality is rarely used…
Wouter Jansen, Jan Steckel
Echolocation is the prime sensing modality for many species of bats, who show the intricate ability to perform a plethora of tasks in complex and unstructured environments. Understanding this exceptional feat of sensorimotor interaction is a key aspect into building more robust and performant man-made sonar sensors. In…
Sen Zhang, Xin Ma, Hongwang Lu, Weikai He + 1 more
Echolocating bats locate the targets by echolocation. Many theoretical frameworks have been suggested the abilities of bats are related to the shapes of bats ears, but few artificial bat-like ears have been made to mimic the abilities, the difficulty of which lies in the determination of the elevation angle of the…
Miyoko Tsumaki, Yu Teshima, Takao Tsuchiya, Kaoru Ashihara + 2 more
Bats use a sophisticated ultrasonic sensing method called echolocation to recognize the environment. Recently, it has been reported that normal sight participants with no prior experience in echolocation can improve their ability to perceive the spatial layout of various environments through training to hear echoes…
Barak Kol
Introduction. Bats are amazing and unique animals: they are mammals which can fly and echolocate. There are over 1200 bat species [1, 2], out of some 5500 mammal species [3] making them the second largest order of mammals (after rodents). Some 70% of bat species feed on insects, namely are insectivores.
Authors not listed
Nondestructive ultrasonic testing is finding increasing use in battery science. We provide instructions and software for the development of a low cost, modular, and easy to use scanning acoustic microscope. Basic principles of ultrasonic testing are discussed with particular attention to its application for operando…
Nino Läubli, Michael Gerlt, Alexander Wüthrich, Renard Lewis + 5 more
Acoustically excited microstructures have demonstrated significant potential for small scale biomedical applications by overcoming major microfluidic limitations. Recently, the application of oscillating microbubbles has demonstrated their superiority over acoustically excited solid structures due to their enhanced…