Comparison of Time Delay and Phase Shift of a Narrow‐Band Noise Signal in Binaural Signal Detection

1964 ◽  
Vol 36 (5) ◽  
pp. 1041-1042
Author(s):  
Mark E. Rilling ◽  
Lloyd A. Jeffress
Keyword(s):  
Time Delay ◽  
Phase Shift ◽  
Signal Detection ◽  
Narrow Band ◽  
Noise Signal ◽  
Narrow Band Noise ◽  
Band Noise

scholarly journals Detection of weak multi-target with adjacent frequency based on chaotic system

2019 ◽  
Vol 15 (11) ◽  
pp. 155014771989024
Author(s):  
Dawei Chen ◽  
Shuo Shi ◽  
Xuemai Gu ◽  
Byonghyo Shim ◽  
Qianyao Ren
Keyword(s):  
Signal Detection ◽  
Target Detection ◽  
Narrow Band ◽  
Detection System ◽  
Additive White Gaussian Noise ◽  
Melnikov Method ◽  
Detection Algorithm ◽  
Weak Signal Detection ◽  
Narrow Band Noise ◽  
Band Noise

As a promising technology in signal detection, the chaotic detection system can significantly improve the accuracy of weak signal detection in strong background noise. It benefits from its characteristics of the sensitivity to the initial condition and the immunity to the Additive White Gaussian Noise. However, the fundamental challenges of the existing chaotic detection system are the sensitivity to narrow-band noise and the influences of multi-target detection with adjacent frequency, which bring great difficulties in the real application. To address these problems, in this article, we focus on the weak multi-target detection with adjacent frequency under the narrow-band noise, and a novel chaotic detection system that integrates the detection algorithm based on period-chaos duration ratio is proposed. In order to enhance the robustness to narrow-band noise, the Melnikov method is used to analyze the Duffing difference system. To realize the detection of weak multi-target with adjacent frequency, we proposed the detection system using the rule named general critical state. Furthermore, simulation results corroborate that the proposed system based on period-chaos duration ratio can achieve satisfactory performance in terms of the weak multi-target detection under narrow-band noise, and it is well investigated by extensive simulation for testing its effectiveness.

scholarly journals Target detection against narrow band noise backgrounds

1999 ◽  
Vol 39 (13) ◽  
pp. 2191-2203 ◽  
Author(s):  
Mark W. Cannon ◽  
Greg J. Reese ◽  
Steven C. Fullenkamp
Keyword(s):  
Target Detection ◽  
Narrow Band ◽  
Narrow Band Noise ◽  
Band Noise

Search for narrow-band-noise modulations of the infrared transmission of blue bronze

2002 ◽  
Vol 12 (9) ◽  
pp. 85-86
Author(s):  
R. C. Rai ◽  
V. A. Bondarenko ◽  
J. W. Brill
Keyword(s):  
Absorption Coefficient ◽  
Narrow Band ◽  
Diode Lasers ◽  
Infrared Transmission ◽  
Narrow Band Noise ◽  
Band Noise ◽  
Tunable Diode Lasers ◽  
Upper Limits ◽  
Blue Bronze

We have searched for narrow-band-noise (NBN) modulations of the infrared transmission in blue bronze, using tunable diode lasers. No modulations were observed, giving an upper limits for NBN changes in the absorption coefficient of $\Delta \alpha_{NBN} < 0.3 $ / cm ($\approx \alpha/2000$). The implication of these results on proposed CDW properties and NBN mechanisms are discussed.

Lateralization of Narrow-Band Noise by Blind and Sighted Listeners

Perception ◽  
10.1068/p3338 ◽  
2002 ◽  
Vol 31 (7) ◽  
pp. 855-873 ◽  
Author(s):  
Helen J Simon ◽  
Pierre L Divenyi ◽  
Al Lotze
Keyword(s):  
Narrow Band ◽  
Lateral Displacement ◽  
Spatial Hearing ◽  
Binaural Hearing ◽  
Center Frequency ◽  
Intensity Difference ◽  
Sensation Level ◽  
Individual Subject ◽  
Narrow Band Noise ◽  
Band Noise

The effects of varying interaural time delay (ITD) and interaural intensity difference (IID) were measured in normal-hearing sighted and congenitally blind subjects as a function of eleven frequencies and at sound pressure levels of 70 and 90 dB, and at a sensation level of 25 dB (sensation level refers to the pressure level of the sound above its threshold for the individual subject). Using an ‘acoustic’ pointing paradigm, the subject varied the IID of a 500 Hz narrow-band (100 Hz) noise (the ‘pointer’) to coincide with the apparent lateral position of a ‘target’ ITD stimulus. ITDs of 0, ±200, and ±400 μs were obtained through total waveform delays of narrow-band noise, including envelope and fine structure. For both groups, the results of this experiment confirm the traditional view of binaural hearing for like stimuli: non-zero ITDs produce little perceived lateral displacement away from 0 IID at frequencies above 1250 Hz. To the extent that greater magnitude of lateralization for a given ITD, presentation level, and center frequency can be equated with superior localization abilities, blind listeners appear at least comparable and even somewhat better than sighted subjects, especially when attending to signals in the periphery. The present findings suggest that blind listeners are fully able to utilize the cues for spatial hearing, and that vision is not a mandatory prerequisite for the calibration of human spatial hearing.

scholarly journals Stream segregation of narrow-band noise bursts

2001 ◽  
Vol 63 (5) ◽  
pp. 790-797 ◽  
Author(s):  
Albert S. Bregman ◽  
Pierre A. Ahad ◽  
Christina Van Loon
Keyword(s):  
Narrow Band ◽  
Stream Segregation ◽  
Narrow Band Noise ◽  
Band Noise

Elimination of a High-Frequency Narrow-Band Noise Component in a Low-Noise Automobile Wind Tunnel

1996 ◽  
Author(s):  
Wilhelm von Heesen ◽  
Norbert Lindener ◽  
Wolfgang Neise
Keyword(s):  
Wind Tunnel ◽  
High Frequency ◽  
Narrow Band ◽  
Low Noise ◽  
Noise Component ◽  
Narrow Band Noise ◽  
Band Noise

Kink dynamics, breathers and narrow-band noise in near-commensurate systems

1986 ◽  
Vol 13 (1-3) ◽  
pp. 231-239 ◽  
Author(s):  
B Horowitz ◽  
A.R Bishop ◽  
P.S Lomdahl
Keyword(s):  
Narrow Band ◽  
Narrow Band Noise ◽  
Band Noise
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