نتایج جستجو برای: noise performance

تعداد نتایج: 1201599  

2004
Kenichi Yoshida Kazuyuki Takagi Kazuhiko Ozeki

In our previous paper, we presented a speaker identification system using a multi-SNR multi-band method, and reported its robustness against environmental noises. This paper describes two modifications to the system for further enhancement of its noise-robustness. Firstly, 1/f noise is employed instead of white Gaussian noise to make noisy data for training multi-SNR GMMs. Secondly, recombinati...

ژورنال: سلامت و محیط زیست 2010
منظم, محمد رضا, مومن بالله فرد, سمانه, نادرزاده, مهدیه, نصیری, پروین,

Backgrounds and Objectives: There is a considerable notice in the use of noise barriers in recent years. Noise barriers as a control noise solution can increase the insertion loss to protect receivers. This paper presents the results of an investigation about the acoustic efficiency of primitive root sequence diffuser (PRD) on environmental single T-shape barrier.Materials and Methods: A 2D bou...

Journal: :CoRR 2014
Suman Shrestha

Noise is a major issue while transferring images through all kinds of electronic communication. One of the most common noise in electronic communication is an impulse noise which is caused by unstable voltage. In this paper, the comparison of known image denoising techniques is discussed and a new technique using the decision based approach has been used for the removal of impulse noise. All th...

Bekrani, M. ,

One of the novel ultrasonic phased array based scanning methods for ultrasonic imaging in non-destructive test is total focusing method (TFM). This method employs maximum available information of the phased array elements and leads to an improved defect detection accuracy compared to conventional scanning methods. Despite its high detection accuracy, TFM behaves weak in distinguishing the real ...

2017
Bilal Komati Joël Agnus Cédric Clévy Philippe Lutz

In this paper, the prototyping of a new piezoresistive microforce sensor is presented. An original design taking advantage on both mechanical and bulk piezoresistive properties of silicon is presented and enables to easily fabricate a very small, large range, high sensitivity with high integration potential sensor. The sensor is made of two silicon strain gages for which widespread and known mi...

2004
Ruixin Niu Pramod K. Varshney Michael Moore Dale Klamer

For a wireless sensor network (WSN) with a large number of sensors, a decision fusion rule using the total number of detections reported by local sensors for hypothesis testing, is proposed and studied. Based on a signal attenuation model where the received signal power decays as the distance from the target increases, the system level detection performance, namely probabilities of detection an...

2014
Harsh N. Thakkar Kiran R. Parmar

This paper proposes new method to optimize the overall performance in hard cooperative spectrum sensing in cognitive radio. Optimization strategy is proposed in order to optimize the overall performance by variation of SNR. Here given strategy contributes to the methods in the literature by taking their performances to the peak point. Additionally, the effects of spectrum sensing technique type...

Journal: :journal of research in health sciences 0
r golmohammadi m abbaspour p nassiri h mahjub

background : the recognition of road traffic noise as one of the main sources of environmental pollution has led to develop models that enable to predict noise level from fundamental variables. traffic noise prediction models are required as aids for designing roads and highways. in addition, sometimes are used in the assessment of existing or envisaged changes in traffic noise conditions. in t...

2003
Aleksandar Tasic Wouter A. Serdijn John R. Long

Many of the existing theories on phase-noise generation in oscillators are concerned with the noise originating from the active part and the resonator, while the contribution of the biasing noise is usually neglected. However, some recent theories have enlightened that the contribution of the biasing noise to the overall phase noise of the oscillator, actually, overwhelms all the other contribu...

Introduction: noise pollution has a negative effect on physiological parameters, efficiency and auditory system. The aim of this study was to evaluate the performance of a sound screening method for estimating sound risk in small workshops of Hamadan city. Methods: This cross-sectional study was conducted in 22 plants with more than 20 workers. Noise screening was done using a screen...

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