نتایج جستجو برای: a range of highpass filters
تعداد نتایج: 23292567 فیلتر نتایج به سال:
in this thesis protic and aprotic ammonium-based ionic liquids were synthesized and their surface tensions were measured in the range of 298-373k. the protics are alkyl ammonium-based ils with the carboxylate (formate, acetate, propionate) anion and aprotics are quaternary ammonium-based ils with bis(trifluoromethylsulfonyl)imide anion. capillary rise method was used for surface tension measure...
A face recognition method based on long Haar-like filters is proposed. This filter takes a vector form whose components consist of 1 and −1. Although the learning of the filter is basically by the principal component analysis (PCA), our approach lies in constructing a highpass filter with 1 and −1 as filter coefficients. This approach yields a combinatorial optimization problem. Since the probl...
Lattice Wave Digital Filters (LWDFs) are known to be insensitive to finite precision arithmetic effects and can readily be designed for standard filtering applications using a set of explicit formulas elaborated by Gazsi. This paper presents the necessary elements to develop an LWDF design package within the Signal Processing Workstation (SPW) design framework. This package, based on Gazsi's fo...
the present study aimed at investigating the relationship between iranian efl teachers’ classroom management orientations and their teaching styles. additionally, the difference between male and female teachers’ teaching styles and classroom management orientations and their relationship with experience and age were explored. three hundred efl teachers filled in attitudes and beliefs on classro...
This paper deals with adjustable-bandwidth digital lowpass and highpass IIR filters obtained from a lowpass prototype filter via frequency transformations. Starting with adjustable-bandwidth filter specifications, including requirements on passband and stopband edges as well as on passband and stopband ripples, it is shown how to select the prototype filter and how to perform the frequency tran...
In this paper the design of single filter frequency masking recursive filters is discussed. We briefly review the previously proposed lowpass narrow-band filters and propose a design method for highpass narrow-band filters. Wide-band filters are also discussed. The proposed approach uses several identical filters, except for periodicity, which are mapped to a single hardware structure using fol...
abstract i the purpose of this study was to launch a thorough investigation concerning the possibility of differing orientations to the writing proficiency construct by native and non-native english speaking teacher raters. it mainly revolved around the international english language testing system (ielts) that is widely administered and employed as a measure of general proficiency in englis...
Research and exploration of the remaining relics from the past has special importance in identifying the date, history and the identity of a country. Development and the advancement of human knowledge have offered new methods for the detection archaeological sites that by using them without the need for excavation and destruction of antiquities can be found useful information. Today, the non-de...
In infrared astronomy, an observed image from a chop and nod process can be considered as the result of passing the original image through a highpass filter. Here we propose a restoration algorithm which builds up a tight framelet system that has the highpass filter as one of the framelet filters. Our approach reduces the solution of restoration problem to that of recovering the missing coeffic...
A high-order current-mode and transimpedancemode universal filter with multiple-inputs and two-outputs based on multiple output second-generation current conveyors (MOCCIIs) is introduced. By choosing the input current terminals appropriately, the current-mode and transimpedance-mode lowpass, bandpass, highpass, notch or allpass filters can be obtained without component matching conditions. The...
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