HUMAN LOCALISATION OF BAND-PASS FILTERED NOISE

1999 ◽  
Vol 09 (05) ◽  
pp. 441-446 ◽  
Author(s):  
ANDRÉ VAN SCHAIK ◽  
CRAIG JIN ◽  
SIMON CARLILE
Keyword(s):  
Spatial Location ◽  
Interaural Level Difference ◽  
Spectral Contrast ◽  
Sound Localisation ◽  
Spectral Cues ◽  
Band Pass ◽  
Acoustical Cues ◽  
Interaural Time Delay ◽  
Filtered Noise ◽  
Relationship Of

In this work we study the influence and relationship of five different acoustical cues to the human sound localisation process. These cues are: interaural time delay, interaural level difference, interaural spectrum, monaural spectrum, and band-edge spectral contrast. Of particular interest was the synthesis and integration of the different cues to produce a coherent and robust percept of spatial location. The relative weighting and role of the different cues was investigated using band-pass filtered white noise with a frequency range (in kHz) of: 0.3–5, 0.3–7, 0.3–10, 0.3–14, 3–8, 4–9, and 7-14. These stimuli provided varying amounts of spectral information and physiologically detectable temporal information, thus probing the localisation process under varying sound conditions. Three subjects with normal hearing in both ears have performed five trials of 76 test positions for each of these stimuli in an anechoic room. All subjects showed systematic mislocalisation on most of these stimuli. The location to which they are mislocalised varies among subjects but in a systematic manner related to the five different acoustical cues. These cues have been correlated with the subject's localisation responses on an individual basis with the results suggesting that the internal weighting of the spectral cues may vary with the sound condition.

The Analysis and Research of Hedge Trimmer Robotics about Manipulator Kinematics

2013 ◽  
Vol 464 ◽  
pp. 273-278
Author(s):  
Song Liu ◽  
Hui Guo ◽  
Wan Zhang Yang
Keyword(s):  
Inverse Kinematics ◽  
Jacobian Matrix ◽  
Control Program ◽  
Spatial Location ◽  
Velocity Control ◽  
Cartesian Space ◽  
Analysis Theory ◽  
Forward And Inverse Kinematics ◽  
Relationship Of ◽  
The Relationship

According to the analysis theory of the four freedom degree about the robots mechanical arm, in this paper established the four freedom degree of the mechanical arm forward and inverse kinematics equation, which was based on the coordinate system, giving the relationship of the spatial location and gesture between movement member and end executor. Besides, it could solve its Jacobian matrix, and provide theoretical basis to achieve the velocity control program on the end of mechanical arm in Cartesian space. The application of ADAMS had carried out the simulation, analysed the location and movement relations among the mechanical structure, which provided significant data for the actual hedge trimming operation.

scholarly journals Some Useful Design Parameters of Non-Uniform Integrated Band-Pass Filters

1983 ◽  
Vol 11 (1) ◽  
pp. 65-70
Author(s):  
H. R. Singh
Keyword(s):  
Thin Film ◽  
Performance Characteristics ◽  
Design Parameters ◽  
Distributed Parameter ◽  
Band Pass Filter ◽  
Pass Filter ◽  
Band Pass ◽  
Relationship Of ◽  
Important Design ◽  
Terminal Band

Important design parameters for a two-port three-terminal band-pass filter configuration of the integrated thin-film exponential distributed parameter R–C–KR microstructure are presented. The circuit exhibits load independent characteristics. The changes in the value of design parameters under varying loading conditions are given. Various plots illustrating the inter-relationship of the different parameters with each other that can serve as guidelines for a system designer to obtain a pre-assigned pattern of the performance characteristics of the microstructure are included.

scholarly journals Effect of band-pass filtered noise on cortical face responses

2010 ◽  
Vol 2 (7) ◽  
pp. 599-599 ◽  
Author(s):  
T. Tanskanen ◽  
R. Nasanen ◽  
T. Montez ◽  
J. Paallysaho ◽  
R. Hari
Keyword(s):  
Band Pass ◽  
Filtered Noise

The Father, the Son, and John on Location in the Farewell Discourse

2020 ◽  
Vol 7 (1) ◽  
pp. 7-29
Author(s):  
Harry O. Maier
Keyword(s):  
Religious Identity ◽  
Social Geography ◽  
Spatial Location ◽  
Dynamic Relationship ◽  
Farewell Discourse ◽  
The World ◽  
John's Gospel ◽  
Relationship Of ◽  
Spatial Identity ◽  
Edward Soja

AbstractUsing the tools of social geography, specifically those developed by Edward Soja, Henri Lefebvre, and Oliver Sacks, this article explores the Gospel of John’s spatial reference to place as it appears in Jesus’ Farewell Discourse (John 14–17) and the ways it uses narrative to create places for the practices and conceiving of religious identity. Although application of spatial study to John’s gospel is relatively rare in Johannine studies, it promises a great deal of insight, especially because John’s gospel is filled with numerous references to place and a rich variety of prepositional phrases. Through narrative, John offers a spatial temporalization (following Soja, a ‘thirdspace’) for audiences to inhabit and interpret the world around them. John’s Father-Son-Paraclete language of unity (which the Christian tradition has interpreted metaphysically and soteriologically without reference to time and space) creates a place for Johannine discipleship in which listeners reenact the dynamic relationship of its three divine actors. John establishes a particular mode of spatial identity by presenting Father, Son, and Paraclete, together with the narrative’s antagonists and protagonists in particular spaces with a set of behaviors associated with each location. The Johannine reference to Jesus going to prepare a place for his disciples after his death (John 13:36), and the reference to a mansion with many room (John 14:2–4) is traditionally interpreted as a reference to the afterlife or a heavenly domain. Scholars have debated whether this represents a futurist or a realized eschatological teaching. A spatial application offers new insights by viewing it from a social geographical perspective as a spatial location “in the world,” lived out locationally “in” the Paraclete, in rejection by the “world.” Metaphysical unity language refers to a narrative of rejection and suffering, which reveals the identity of Johannine believers “in but not of the world.” In this regard, John reflects sapiential themes found in the Hebrew Bible and the intertestamental period that tell of wisdom dwelling on earth and also being rejected.

La escritura, la ilustración y la animación como estrategia de enseñanza-aprendizaje de la anatomía humana

2021 ◽  
Vol 5 ◽  
pp. 67-76
Author(s):  
Sonia Osorio
Keyword(s):  
Brachial Plexus ◽  
Teaching And Learning ◽  
Deep Understanding ◽  
Spatial Location ◽  
Human Anatomy ◽  
Emotional Engagement ◽  
Proposed Model ◽  
Definition Of ◽  
Teaching Learning ◽  
Relationship Of

The importance of research on the teaching and learning of human anatomy is currently recognized, especially if it is considered that university courses in this area continue the traditional scheme that predominates worldwide, prioritizing transmissive teaching, rote learning and summative evaluation. The purpose of this work was the construction of models for the teaching-learning (T-L) of human anatomy in which the writing, illustration and animation of a story is proposed as a method of T-L of the anatomy of the brachial plexus (nerves of the upper limb). For this, the model construction process was followed, taking into account the definition of the objective, the initial observation, the reading of the theory, the form of representation, the verification of the proposed model, and the socialization. This T-L method allowed the students to achieve a deep understanding of the topic, in this case, the spatial location of the brachial plexus, the relationship of the anatomical structures and their clinical correlation. Therefore, it can be concluded that the elaboration of models allowed the students to take ownership of their learning process by proposing, exploring and deploying their creativity and critical thinking; in addition, the attitude of the teachers, who participated as mediators, contributed to the students’ cognitive and emotional engagement in the academic activity.

scholarly journals Asymmetries in behavioral and neural responses to spectral cues demonstrate the generality of auditory looming bias

2017 ◽  
Vol 114 (36) ◽  
pp. 9743-9748 ◽  
Author(s):  
Robert Baumgartner ◽  
Darrin K. Reed ◽  
Brigitta Tóth ◽  
Virginia Best ◽  
Piotr Majdak ◽  
...  
Keyword(s):  
Sound Intensity ◽  
Event Related Potentials ◽  
Perceptual Bias ◽  
Natural Environments ◽  
Motion Direction ◽  
Spectral Contrast ◽  
Spectral Cues ◽  
Late Event ◽  
Related Potentials ◽  
Auditory Looming

Studies of auditory looming bias have shown that sources increasing in intensity are more salient than sources decreasing in intensity. Researchers have argued that listeners are more sensitive to approaching sounds compared with receding sounds, reflecting an evolutionary pressure. However, these studies only manipulated overall sound intensity; therefore, it is unclear whether looming bias is truly a perceptual bias for changes in source distance, or only in sound intensity. Here we demonstrate both behavioral and neural correlates of looming bias without manipulating overall sound intensity. In natural environments, the pinnae induce spectral cues that give rise to a sense of externalization; when spectral cues are unnatural, sounds are perceived as closer to the listener. We manipulated the contrast of individually tailored spectral cues to create sounds of similar intensity but different naturalness. We confirmed that sounds were perceived as approaching when spectral contrast decreased, and perceived as receding when spectral contrast increased. We measured behavior and electroencephalography while listeners judged motion direction. Behavioral responses showed a looming bias in that responses were more consistent for sounds perceived as approaching than for sounds perceived as receding. In a control experiment, looming bias disappeared when spectral contrast changes were discontinuous, suggesting that perceived motion in distance and not distance itself was driving the bias. Neurally, looming bias was reflected in an asymmetry of late event-related potentials associated with motion evaluation. Hence, both our behavioral and neural findings support a generalization of the auditory looming bias, representing a perceptual preference for approaching auditory objects.

scholarly journals Development of a tri-axial primary vibration calibration system

ACTA IMEKO ◽  
2019 ◽  
Vol 8 (1) ◽  
pp. 33 ◽  
Author(s):  
Zhihua Liu ◽  
Chenguang Cai ◽  
Ming Yang ◽  
Mei Yu
Keyword(s):  
Sampling Method ◽  
Cross Coupling ◽  
Measuring System ◽  
Vibration Exciter ◽  
Air Bearing ◽  
Calibration System ◽  
Band Pass ◽  
The Cross ◽  
Set Up ◽  
Relationship Of

A tri-axial primary vibration calibration system has been set up at National Institute of Metrology for simultaneous calibration of motion transducers. The system is driven by three electrodynamics exciters that are mounted along the three orthogonal axes. The cross-coupling unit based on air bearing is developed for force transferring and motion guiding. Spatial orbit vibration is composited from sine vibration components of the three orthogonal axes. Relationship of shapes and orientations of spatial orbits and amplitudes and phases of sine vibration components is discussed. Multi-exciter vibration control for both cross-coupling compensation and amplitudes and phases control of sine vibration components is investigated. The tri-axial measuring system can simultaneously measure the three orthogonal vibration quantities based on the band-pass sampling method. The experiments show that a variety of spatial orbits can be generated by efficiently reducing the cross-coupling of the tri-axial vibration exciter and the magnitude and the phase shift of sensitivities of a tri-axis accelerometer can be determined.

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