Results 1 to 10 of about 1,016,946 (149)

Acoustooptic digital filter [PDF]

open access: yesApplied Optics, 1985
Digital filters have three components: (1) unit delays, (2) multipliers, and (3) adders. These components can be implemented by using (1) a Bragg cell as a tapped delay line, (2) optical multiplication using the Bragg cell transmittance, and (3) photodetectors.
F, Salamat, R J, Marks Ii
openaire   +2 more sources

The simulation of piano string vibration: {F}rom physical models to finite difference schemes and digital waveguides [PDF]

open access: yes, 2003
A model of transverse piano string vibration, second order in time, which models frequency-dependent loss and dispersion effects is presented here. This model has many desirable properties, in particular that it can be written as a well-posed initial ...
Bensa, Julien   +3 more
core   +3 more sources

Low passband sensitivity digital filters: A generalized viewpoint and synthesis procedures [PDF]

open access: yes, 1984
The concepts of losslessness and maximum available power are basic to the low-sensitivity properties of doubly terminated lossless networks of the continuous-time domain.
Mitra, Sanjit K., Vaidyanathan, P. P.
core   +1 more source

An investigation of an MPEG-4 embedded spatial digital watermark developed for tamper detection and characterization [PDF]

open access: yes, 2003
The widespread adoption of digital video techniques has generated a requirement for authenticity verification in applications such as criminal evidence, insurance claims and commercial databases.
Bull, DR   +3 more
core   +2 more sources

Active control of vibrant actuators with adaptive adjustment of the reference [PDF]

open access: yes, 1999
An improved adaptive filter for eliminating periodic vibrations of unknown frequency in rotary machinery is presented. The proposed canceller is based on a usual bank of digital adaptive notch filters, each filter tuned in the cancellation of one ...
Bertran Albertí, Eduardo   +1 more
core   +1 more source

Digital notch filter [PDF]

open access: yes, 1973
Filter determines whether time period of incoming signal matches time preset in filter.
Meers, B. Z., Jr.
core   +1 more source

Selecting digital filters [PDF]

open access: yes, 1972
Technique reduces task of filter design by using cut off frequency, termination frequency and weight number to determine filter effect on frequency domain of digital filter input data ...
Demandel, R. E., Krivo, S. J.
core   +1 more source

Digital filter for reducing sampling jitter in digital control systems Patent [PDF]

open access: yes, 1971
Digital filter for reducing jitter in digital control ...
Anderson, T. O., Hurd, W. J.
core   +1 more source

Special purpose computer provides programmable digital filter for sampled-data control systems [PDF]

open access: yes, 1969
Generalized digital filter is a special purpose computer. The term digital filter is an algorithm which accepts an input sequence of numbers and transforms it into an output number sequence.
Carroll, C. C.
core   +1 more source

Verification of Magnitude and Phase Responses in Fixed-Point Digital Filters

open access: yes, 2017
In the digital signal processing (DSP) area, one of the most important tasks is digital filter design. Currently, this procedure is performed with the aid of computational tools, which generally assume filter coefficients represented with floating-point ...
Clavier, Laurent   +6 more
core   +1 more source

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