نتایج جستجو برای: classical wavelet systems

تعداد نتایج: 1374956  

Journal: :فیزیک زمین و فضا 0
مهرداد علی مرادیان مربی، دانشگاه آزاد اسلامی، واحد ایلام حسین زمردیان استاد، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات، تهران آرش متشرعی استادیار، دانشگاه آزاد اسلامی، واحد چالوس

geophysical data are always affected by different sources of anomaly. these sources are classified in to three groups: first group is relatively deep sources commonly called as regional effects, second group is near surface sources or local effects and third group is high frequency noises. the only common way to separate the anomaly is separation with respect to the signal frequency. there are ...

2018
Rameez Asif Raed Abd-alhameed J. M. Noras J. G. Proakis M. Salehi Abdullah N. Al-Hinai A. Z. Sadik H. J. Taha M. F. M. Salleh

Recent studies suggest that multicarrier systems using wavelets outperform conventional OFDM systems using the FFT, in that they have well-contained side lobes, improved spectral efficiency and BER performance, and they do not require a cyclic prefix. Here we study the wavelet packet and discrete wavelet transforms, comparing the BER performance of wavelet transform-based multicarrier systems a...

Journal: :Inf. Sci. 2006
Stephan Rein Martin Reisslein

As the internet search evolves toward multimedia content based search and information retrieval, audio content identification and retrieval will likely become one of the key components of next generation internet search machines. In this paper we consider the specific problem of identifying the classical music composition of an unknown performance of the composition. We develop and evaluate a w...

Journal: :Modern Physics Letters A 2003

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