scholarly journals Analysis of Eye Movements in a Subjective Evaluation Test of Picture Quality.

1997 ◽  
Vol 51 (11) ◽  
pp. 1915-1926 ◽  
Author(s):  
Nagato Narita ◽  
Mitsuho Yamada
Keyword(s):  
Eye Movements ◽  
Subjective Evaluation ◽  
Picture Quality ◽  
Evaluation Test

Subjective Analysis and Objective Evaluation of Vehicle Sound Quality

2013 ◽  
Vol 716 ◽  
pp. 674-679 ◽  
Author(s):  
Yan Yan Zuo ◽  
Shuai Li Zhou ◽  
Wen Feng Zhou
Keyword(s):  
Constant Velocity ◽  
Paired Comparison ◽  
Subjective Evaluation ◽  
Objective Evaluation ◽  
Sound Quality ◽  
Comparison Method ◽  
Acoustical Parameters ◽  
Vehicle Interior ◽  
Subjective Analysis ◽  
Evaluation Test

The interior noise samples from four cars at different positions and different speeds were selected as the evaluation objects. The subjective evaluation test of sound quality preference was carried out with paired comparison method. Several objective psycho-acoustical parameters of these samples were calculated. By way of linear correlation and multi-dimensional regression analysis, an equation between the subjective evaluation of noise preference and the objective psycho-acoustical parameters was established. The results indicate that the vehicle interior sound quality preference under the good highway and the constant-velocity driving conditions is affected mainly by two psycho-acoustical parameters Loudness and Sharpness.

Study on Eye Movements in Subjective Evaluation of Displayed Pictures

2021 ◽  
Vol 141 (6) ◽  
pp. 720-726
Author(s):  
Motoshi Tanaka ◽  
Takuaki Yajima ◽  
Yoshitsugu Niiyama
Keyword(s):  
Eye Movements ◽  
Subjective Evaluation

scholarly journals Improved Frame Error Concealment Algorithm Based on Transform- Domain Mobile Audio Codec

2014 ◽  
Vol 8 (1) ◽  
pp. 527-535
Author(s):  
Kai Xiang ◽  
Shihong Chen ◽  
Yuanyuan Zeng
Keyword(s):  
Error Concealment ◽  
Subjective Evaluation ◽  
Attenuation Factor ◽  
Gain Control ◽  
Performance Comparison ◽  
Stream Data ◽  
Control Approach ◽  
Original Algorithm ◽  
Evaluation Test ◽  
Audio Codec

In this paper, we propose an improved frame error concealment algorithm for TCX-based audio coders in order to improve the quality of decoded audio at the receiver. Conventional TCX-based frame error concealment algorithms in the AMR-WB+ audio codec are usually unable to adaptively adjust gain control according to changes in the magnitude of the correct frame before lost frames. Thus, we propose a new gain control approach based on stability of LPC filter, and the stream data need to contain the line spectrum frequency data and utilize different continuous attenuation factor formula based on different categories of lost frames. The proposed frame error concealment algorithm is designed for TCX-based audio codec. We make the performance comparison between the proposed method and the original algorithm currently employed in AMR-WB+ audio codec through the objective evaluation test and subjective evaluation test. The results prove that our algorithm can achieve better audio recovery quality than original frame error concealment algorithm employed in AMR-WB+ speech codec.

Optokinetic Suppression of Aberrant Vestibular Reactions: An Observation

1979 ◽  
Vol 88 (1) ◽  
pp. 109-111
Author(s):  
Marc S. Karlan ◽  
John Todd ◽  
Calvin K. Adams ◽  
Gerald H. Stein ◽  
Mark K. Goldstein
Keyword(s):  
Eye Movements ◽  
Magnitude Estimation ◽  
Optokinetic Nystagmus ◽  
Subjective Evaluation ◽  
Visual Fixation ◽  
Single Subject ◽  
Positional Vertigo ◽  
Vestibular Response ◽  
Paroxysmal Positional Vertigo

It has long been known that optokinetic nystagmus may be modified by vestibular inputs. We have suppressed an aberrant vestibular response and associated gastrointestinal sensations by use of an optokinetic stimulus simultaneous to the positional stimulus in a patient with paroxysmal positional vertigo. This single subject study utilized several optokinetic conditions, and patterned its stimulus presentations to control for visual fixation and vestibular habituation. Objective recordings of eye movements (ENG) were made simultaneously with subjective evaluation of “dizziness” on a simple magnitude estimation scale.

Case study: Effect of visual and task conditions on the subjective evaluation of the sound environments inside running passenger cars

2019 ◽  
Vol 67 (3) ◽  
pp. 210-218 ◽  
Author(s):  
T. Asakura
Keyword(s):  
Subjective Evaluation ◽  
Visual Stimuli ◽  
Differential Method ◽  
Video Data ◽  
Passenger Cars ◽  
Subjective Impression ◽  
Head Mounted Display ◽  
Evaluation Test ◽  
Driving Task ◽  
Task Conditions

The effect of the additionally presented visual stimuli and driving task on the subjective evaluation of the sound inside running passenger car has been investigated through subjective evaluation test on the semantic differential method. The recorded video data and binaural sound data were simultaneously presented to the subjects by using the headphone and the head-mounted display. As a result of the evaluation test, the subjective impression of the interior sound greatly varied depending on the visual stimuli and the driving task. Especially in the situation that the LAeq of the interior sound is relatively low, the evaluated results are more strongly influenced by the visual stimuli and the driving task.

scholarly journals Spontaneous Ocular Scanning of Visual Symmetry Is Similar During Classification and Evaluation Tasks

i-Perception ◽  
2020 ◽  
Vol 11 (5) ◽  
pp. 204166952094635
Author(s):  
Alexis D. J. Makin ◽  
Ellen Poliakoff ◽  
Giulia Rampone ◽  
Marco Bertamini
Keyword(s):  
Eye Movements ◽  
Subjective Evaluation ◽  
Saccadic Eye Movements ◽  
Neural Response ◽  
Mirror Reflection ◽  
Objective Classification ◽  
Symmetry Perception

Visual symmetry perception and symmetry preference have been studied extensively. However, less is known about how people spontaneously scan symmetrical stimuli with their eyes. We thus examined spontaneous saccadic eye movements when participants ( N = 20) observed patterns with horizontal or vertical mirror reflection. We found that participants tend to make saccades along the axis of reflection and that this oculomotor behaviour was similar during objective classification and subjective evaluation tasks. The axis-scanning behaviour generates a dynamic sequence of novel symmetrical images from a single static stimulus. This could aid symmetry perception and evaluation by enhancing the neural response to symmetry.

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