From primal sketches to the recovery of intensity and reflectance representations [PDF]
A local change in intensity (edge) is a characteristic that is preserved when an image is filtered through a bandpass filter. Primal sketch representations of images, using the bandpass-filtered data, have become a common process since Marr proposed his ...
Alter-Gartenberg, Rachel +2 more
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Thin carbon film serves as UV bandpass filter [PDF]
, 1966 Thin carbon film deposited on a 70 percent transparent screen provides a filter for narrow-band detectors in the extreme ultraviolet.
core +1 more source
Kinerja Butterworth Low-Pass Filter pada Teknik Modulasi Digital ASK terhadap Paket Data yang Dipengaruhi oleh Derau [PDF]
, 2012 Proses pengiriman data informasi dalam bentuk sinyal digital kedalamsaluran transmisi, dipengaruhi oleh adanya penambahan derau padakanal yang dilaluinya untuk disampaikan ke penerima.
Hidayat, W. S. (Wisnoe)
core
A report of the tests performed on the Zeiss H alpha filter [PDF]
Bandpass testing of Zeiss H-alpha filter to determine wavelength of transmission and optical ...
Neidig, D. F., Jr.
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Electronically tunable bandpass filter
, 1990 An electronically tunable bandpass filter is presented. It is a combline filter realized in microstrip form. The filter is made tunable by using the variable capacitance of a GaAs fet (or of a varactor). With the use of this technique it is possible to achieve relative bandwidth from 8% to 30%, a tuning bandwidth 'up to 50% and a center frequency up to
Bianchi, G., Pinto, G.
openaire +2 more sources
Are Business Cycles All Alike? A Bandpass Filter Analysis of Italian and US Cycles [PDF]
In this paper, we apply the bandpass filter to the main Italian and US macroeconomic variables, we estimate cross-correlations with respect to a benchmark indicator of the business cycle, and we compare results with previous empirical analyses.
Andrea Roventini +2 more
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Discrete Fourier Transform Filters as Business Cycle Extraction Tools: An Investigation of Cycle Extraction Properties and Applicability of ‘Gibbs’ Effect [PDF]
, 2008 The purpose of this article is to investigate the ability of an assortment of frequency domain bandpass filters proposed in the economics literature to extract a known periodicity.
Foster, John +2 more
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Tunable Versatile High Input Impedance Voltage-Mode Universal Biquadratic Filter Based on DDCCs [PDF]
, 2012 A high input impedance voltage-mode universal biquadratic filter with three input terminals and seven output terminals is presented. The proposed circuit uses three differential difference current conveyors (DDCCs), four resistors and two grounded ...
Jiun-Wei Horng +2 more
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Detrending and the Distributional Properties of U.S. Output Time Series [PDF]
We study the impact of alternative detrending techniques on the distributional properties of U.S. output time series. We detrend GDP and industrial production time series employing first-differencing, Hodrick-Prescott and bandpass filters.
Andrea Roventini +3 more
core +3 more sources
Performance of a Y-Ba-Cu-O superconducting filter/GaAs low noise amplifier hybrid circuit [PDF]
A superconducting 7.3 GHz two-pole microstrip bandpass filter and a GaAs low noise amplifier (LNA) were combined into an active circuit and characterized at liquid nitrogen temperatures.
Bhasin, K. B. +4 more
core +1 more source