Noise Source Localization in an Attenuating Medium
نویسندگان
چکیده
In this paper we consider the problem of reconstructing the spatial support of noise sources from boundary measurements using cross correlation techniques. We consider media with and without attenuation and provide efficient imaging functionals in both cases. We also discuss the case where the noise sources are spatially correlated. We present numerical results to show the viability of the different proposed imaging techniques. AMS subject classifications. 35L05, 35R30; Secondary 47A52, 65J20
منابع مشابه
Reliability of Interaural Time Difference-Based Localization Training in Elderly Individuals with Speech-in-Noise Perception Disorder
Background: Previous studies have shown that interaural-time-difference (ITD) training can improve localization ability. Surprisingly little is, however, known about localization training vis-à-vis speech perception in noise based on interaural time difference in the envelope (ITD ENV). We sought to investigate the reliability of an ITD ENV-based training program in speech-in-noise perception a...
متن کاملApplication of Single-Frequency Time-Space Filtering Technique for Seismic Ground Roll and Random Noise Attenuation
Time-frequency filtering is an acceptable technique for attenuating noise in 2-D (time-space) and 3-D (time-space-space) reflection seismic data. The common approach for this purpose is transforming each seismic signal from 1-D time domain to a 2-D time-frequency domain and then denoising the signal by a designed filter and finally transforming back the filtered signal to original time domain. ...
متن کاملFrequency modulated pulse for ultrasonic imaging in an attenuating medium
Rao, Navalgund, "Frequency modulated pulse for ultrasonic imaging in an attenuating medium" (1990). IEEE,Accessed from ABSTRACT There is now increasing theoretical and experimental evidence that ultrasound used at intensities employed clinically, can produce effects characteristic of transient cavitation. Probability to cause bioeffects by transient cavitation is immensely greater above a thres...
متن کاملEnvelope-based inter-aural time difference localization training to improve speech-in-noise perception in the elderly
Background: Many elderly individuals complain of difficulty in understanding speech in noise despite having normal hearing thresholds. According to previous studies, auditory training leads to improvement in speech-in-noise perception, but these studies did not consider the etiology, so their results cannot be generalized. The present study aimed at investigating the effectiveness of envelope-b...
متن کاملActive Noise Attenuation Bw
A new method for globallw reducing the amount of unwanted Power radiated bv acoustic sourcesy bw means of active devices, is Proposed. After examining PreviouslY reported passive and active noise attenuating technioues, and finding them to be unsuitable for some applications, a new method is Proposed. The scheme involves Placin an attenuating source close to the noise sourcer driven in such a w...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- SIAM Journal of Applied Mathematics
دوره 72 شماره
صفحات -
تاریخ انتشار 2012