"Discrete Fourier transform" Essays and Research Papers

Sort By:
Satisfactory Essays
Good Essays
Better Essays
Powerful Essays
Best Essays
Page 30 of 50 - About 500 Essays
  • Good Essays

    Paw Step Cycle

    • 564 Words
    • 3 Pages

    the bound or gallop is used for high speed. A gallop occurs when only one paw is in the stance phase and no paws are in the stance phase or we called aerial phase \cite{mendes2015}. Step periodicity can be quantified by using Fast Fourier Transform (FFT) analysis applied to the horizontal component of the stepping trajectories \cite{fong2005}. The fundamental stepping frequency locates at the predominant peak. In the case of the poor stepping of the rat is shown‚ the fundamental peak is

    Premium Classical mechanics Force Mass

    • 564 Words
    • 3 Pages
    Good Essays
  • Good Essays

    stochastic process

    • 1999 Words
    • 8 Pages

    modelling the evolution of some variable over time‚ so it is reasonable that the range of X t is the same across time. In that case we call the range of X t the state space. If the index set T is a countable set‚ we call the stochastic process a discrete-time process. If the index set is an interval of the real line‚ we call the process a continuous-time process. Although t is often used to indicate time‚ it can be used in other ways as well. For example‚ when modelling spatial phenomena (e.g

    Premium Probability theory

    • 1999 Words
    • 8 Pages
    Good Essays
  • Better Essays

    computer

    • 1223 Words
    • 5 Pages

    Considering digital image features with high volumes and video data‚ especially in real-time applications‚ the use of classic encryption methods like DES‚ AES‚ ...‚ is not efficient in terms of being time cosuming. In this article‚ a new method is proposed to encrypt digital images‚ using chos systems and utilizing DNA patterns. A central idea in the method suggested is to produce a pseudo-random DNA strand using chaos functions‚ which an encrypted strand is created‚ using the random strand and the

    Premium Encryption Randomness Cryptography

    • 1223 Words
    • 5 Pages
    Better Essays
  • Good Essays

    New forensic laser technique for hair analysis Using a new laser technique‚ Jim Moran and his colleagues at Pacific Northwest National Laboratory‚ have devised a method of separating out the parts of hair samples that can reveal details about the recent history of the person to whom it belongs. In their paper‚ published in Rapid Communications in Mass Spectrometry‚ they describe a process they’ve devised whereby hair samples are pulled apart‚ rather than burned as a whole before being measured

    Premium Infrared Spectroscopy Laser

    • 4022 Words
    • 17 Pages
    Good Essays
  • Powerful Essays

    (amplitude and phase) of a system using ‘swept sine’ excitation. The resulting dynamic signal analyzer provides a convenient tool for obtaining empirical Bode plots of system and controller dynamics within the dSPACE environment. Both the derived (Fourier) and raw (time domain) data are displayed at each frequency tested. The bandwidth possible is linearly related to the sampling rate limits set by both the dSPACE board used and the complexity of the model. With the ds1102 and a simple model‚ at a

    Premium Phase Wave Signal processing

    • 4081 Words
    • 17 Pages
    Powerful Essays
  • Good Essays

    Zolmitriptan Case Study

    • 2137 Words
    • 9 Pages

    2.3.7.2 Fourier Transforms Infrared Spectroscopy (FTIR). Compatibility studies of pure Zolmitriptan and excipients were performed via using fourier transformed infrared spectrophotometer (Shimadzu‚ Japan) in the range of 400-4000/cm-1 by using KBr disc method. A base line correction was made using dried potassium bromide KBr and

    Premium Tablet press Tablet Buffer solution

    • 2137 Words
    • 9 Pages
    Good Essays
  • Powerful Essays

    Signal &System

    • 11991 Words
    • 48 Pages

    Wireless Information Transmission System Lab. Chapter 4 Characterization of Communication Signals and Systems Reference: Chapter 6‚ Communication Systems‚ 4th Edition. by Simon Haykin Institute of Communications Engineering National Sun Yat-sen University Table of Contents 4.1 Representation of Band-Pass Signals and Systems 4.1.1 Representation of Band-Pass Signals 4.1.2 Representation of Linear Band-Pass Systems 4.1.3 Response of a Band-Pass System to a Band-Pass Signal 4.1.4 Representation

    Premium Modulation

    • 11991 Words
    • 48 Pages
    Powerful Essays
  • Better Essays

    The natural plant exudate gum tragacanth is obtained from the stem of the bush like plant “goat’s-horn”‚ Astragalus species. Gum tragacanth has been used commercially for well over 2000 years and is currently widely used as a thickener and emulsifier in emulsion systems in different pharmaceutical‚ food‚ cosmetic and diverse industrial uses. In addition‚ it is on the list of stabilizers that are permitted by Food and Agriculture Organization/ World Health Organization that could be used during the

    Premium Spectroscopy Spectroscopy Gold

    • 1723 Words
    • 7 Pages
    Better Essays
  • Good Essays

    8 micrometers) Mid IR- (2.5- 50 micrometers) Far IR- (50-1000 micrometers) Most common region used is Mid IR btwn 2.5- 15 micrometers Mid IR: based on diffracting gratings but now current instrumentation are of Fourier transform type Far-IR: useful now that Fourier transform instruments are available. Can measure IR absorption‚ emission‚ and reflection in energy in order for a species to absorb IR radiation‚ it needs to undergo a net change in dipole moment (vibrational/rotational motion)

    Premium Chromatography

    • 1665 Words
    • 7 Pages
    Good Essays
  • Powerful Essays

    Lecture Notes

    • 14220 Words
    • 57 Pages

    Lecture Notes for Analog Electronics Raymond E. Frey Physics Department University of Oregon Eugene‚ OR 97403‚ USA rayfrey@cosmic.uoregon.edu December‚ 1999 Class Notes 1 1 Basic Principles In electromagnetism‚ voltage is a unit of either electrical potential or EMF. In electronics‚ including the text‚ the term “voltage” refers to the physical quantity of either potential or EMF. Note that we will use SI units‚ as does the text. As usual‚ the sign convention for current I

    Premium RC circuit

    • 14220 Words
    • 57 Pages
    Powerful Essays
Page 1 27 28 29 30 31 32 33 34 50