Multithreshold Decoders for Channels with a High Noise Level

2007 ◽  
Vol 66 (7) ◽  
pp. 661-672
Author(s):  
V. V. Zolotarev ◽  
G. V. Ovechkin
Keyword(s):  
Noise Level ◽  
High Noise ◽  
High Noise Level

SOME EXPERIMENTS ON MULTIPLE REFLECTION CANCELLATION

Geophysics ◽  
1965 ◽  
Vol 30 (6) ◽  
pp. 1085-1093 ◽  
Author(s):  
Daniel Silverman ◽  
N. R. Sparks
Keyword(s):  
Noise Level ◽  
Multiple Reflection ◽  
Multiple Reflections ◽  
Near Surface ◽  
High Noise ◽  
Precise Information ◽  
High Noise Level ◽  
The Earth ◽  
Primary Signal ◽  
Seismic Records

One of the most promising methods of identification or cancellation of multiple reflections on seismic records involves the calculation of synthetic records with all primaries and multiples, and the matching of the synthetic record with the field record. Such matching suffers today from the lack of precise information about the velocities and densities of the formations, dips of beds nonvertical transmission, etc. One possibility of improving this match involves the use of the earth itself as the “synthetic record computer.” In this process, the upcoming (or downgoing) primary signals are fed back into the earth with a vibrator in proper amplitude and phase to create a synthetic record of multiples only, which should match the multiples on the field record. Of course, only those multiple reflections which include a downward reflection from beds above the primary signal detectors will be included in the synthetic record of multiples only. The paper reports two experimental programs. One was carried out on an analog network to simulate the near‐surface and deeper formations, with means to feed back the upcoming signals in proper timing and polarity to cancel the multiples. These experiments indicated the theoretical workability of the process. The second program of experiments involved the use of a vertical spread to detect the upcoming and downgoing signals, and the use of a hydraulic vibrator to impress those signals back into the earth. These experiments were not conclusive because of insufficient power in the vibrator and high noise level. However, they indicated possible ways in which these limitations might be reduced, and the method applied to routine field operations.

scholarly journals Voice Controlled Industrial Parameters Monitoring and Controlling System

2020 ◽  
Vol 9 (1) ◽  
pp. 181-184
Keyword(s):  
Internet Of Things ◽  
Induction Motor ◽  
Noise Level ◽  
Power Plants ◽  
Motor Speed ◽  
High Noise ◽  
High Noise Level ◽  
Controlling System ◽  
The World ◽  
And Control

Internet of Things is a medium by which we can control our appliances from anywhere in the world. In Industry many times accidents happened due to negligence of workers and there are some risky areas in Industry where workers not able to go and work. Voice-controlled Industrial parameters monitoring and controlling system are used in the risky areas of Industries usually in power plants where there are high noise level and pollution to avoid accidents. Here an induction motor speed, temperature, pressure, etc are monitored and controlled to avoid damage to the motor. These all the parameters are going to monitor and controlled automatically. In this paper, Google-Assistant and Adafruit IO server are used for monitoring and controlling. By using this system the workers can monitor and control Industrial appliances and problems occur in Industries where workers not able to go and work are overcome.

scholarly journals Level of noise pollution at different locations in Tangail municipal area, Bangladesh

2014 ◽  
Vol 26 (1-2) ◽  
pp. 29-36 ◽  
Author(s):  
MMM Hoque ◽  
LK Basak ◽  
M Rokanuzzaman ◽  
Sajal Roy
Keyword(s):  
Noise Level ◽  
Noise Pollution ◽  
Heart Beat ◽  
Motor Vehicles ◽  
Noise Levels ◽  
High Noise ◽  
High Noise Level ◽  
The Road ◽  
Common Problems ◽  
Hospital Shopping

The study was carried out to ascertain the level of noise pollution at different locations in Tangail municipal area. For this purpose noise levels were measured at different locations at different periods of the day. At all the locations the level of noise were found to be higher than the acceptable level. The intensity of noise was found lower with increasing distance from the road side. The noise level on the main road near hospital, shopping center and bazars was above the standard level recommended by MoEF. From the survey motor vehicles were found as the main cause of high noise level. The most common problems with high noise level were found to increased heart beat, drowsiness, headache and hearing impairment. DOI: http://dx.doi.org/10.3329/bjsr.v26i1-2.20228 Bangladesh J. Sci. Res. 26(1-2): 29-36, December-2013

ANALYSIS OF THE AIRPORT NOISE IMPACT ON THE OCCURRENCE OF EMERGENCY SITUATIONS

Akustika ◽  
2021 ◽  
pp. 22-24
Author(s):  
Alexey Shvetsov ◽  
Viktor Gromov
Keyword(s):  
Noise Level ◽  
Ground Vehicles ◽  
High Noise ◽  
High Noise Level ◽  
Land Vehicle ◽  
Emergency Situations ◽  
New Methods ◽  
Noise Impact

The high noise level in modern airports is one of the causes that affect the occurrence of accidents involving airliners and ground vehicles operating at the airport. In this study, an emergency prevention algorithm has been developed aiming at reducing the probability of an emergency collision of an airliner and a land vehicle by separating the noise generated during the airport operation into the noise that warns the pilot (operator) about the threat of an emergency collision and the noise that contributes to the accident initiation. The results of the study can be used in the development of new methods and technical means aimed at preventing accidents at airports.

Sign in / Sign up

Export Citation Format

Share Document