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DIGITAL IIR FILTER DESIGN. FILTER DESIGN


Digital iir filter design. Ro water filter systems.



Digital Iir Filter Design





digital iir filter design






    filter design
  • Filter design is the process of designing a filter (in the sense in which the term is used in signal processing, statistics, and applied mathematics), often a linear shift-invariant filter, which satisfies a set of requirements, some of which are contradictory.





    digital
  • (of a clock or watch) Showing the time by means of displayed digits rather than hands or a pointer

  • relating to or performed with the fingers; "digital examination"

  • Involving or relating to the use of computer technology

  • Relating to or using signals or information represented by discrete values (digits) of a physical quantity, such as voltage or magnetic polarization, to represent arithmetic numbers or approximations to numbers from a continuum or logical expressions and variables

  • displaying numbers rather than scale positions; "digital clock"; "digital readout"

  • of a circuit or device that represents magnitudes in digits; "digital computer"





    iir
  • (IIRS) The Indian Institute of Remote Sensing is the training and education arm of the Indian Department of Space. Located in Dehradun, the institute offers a variety of courses in Remote sensing and Geographic Information Systems (GIS), ranging in length from one week to two years.

  • The Indo-Iranian language group constitutes the easternmost extant branch of the Indo-European family of languages. It consists of three language groups: the Indo-Aryan, Iranian (Irano-Aryan) and Nuristani.

  • Infinite impulse response (IIR) is a property of signal processing systems. Systems with this property are known as IIR systems or, when dealing with filter systems, as IIR filters. IIR systems have an impulse response function that is non-zero over an infinite length of time.











digital iir filter design - Introduction to




Introduction to Digital Signal Processing and Filter Design


Introduction to Digital Signal Processing and Filter Design



A practical and accessible guide to understanding digital signal processing

Introduction to Digital Signal Processing and Filter Design was developed and fine-tuned from the author's twenty-five years of experience teaching classes in digital signal processing. Following a step-by-step approach, students and professionals quickly master the fundamental concepts and applications of discrete-time signals and systems as well as the synthesis of these systems to meet specifications in the time and frequency domains. Striking the right balance between mathematical derivations and theory, the book features:
* Discrete-time signals and systems
* Linear difference equations
* Solutions by recursive algorithms
* Convolution
* Time and frequency domain analysis
* Discrete Fourier series
* Design of FIR and IIR filters
* Practical methods for hardware implementation

A unique feature of this book is a complete chapter on the use of a MATLAB(r) tool, known as the FDA (Filter Design and Analysis) tool, to investigate the effect of finite word length and different formats of quantization, different realization structures, and different methods for filter design. This chapter contains material of practical importance that is not found in many books used in academic courses. It introduces students in digital signal processing to what they need to know to design digital systems using DSP chips currently available from industry.

With its unique, classroom-tested approach, Introduction to Digital Signal Processing and Filter Design is the ideal text for students in electrical and electronic engineering, computer science, and applied mathematics, and an accessible introduction or refresher for engineers and scientists in the field.

An Instructor's Manual presenting detailed solutions to all the problems in the book is available online from the Wiley editorial department.

An Instructor Support FTP site is also available.










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digital Incense




digital Incense





Digital Incense - smoke art or " art based on luck"

Incense Sticks - No processing except cropping.

Setup:
Nikon D300 full manual ( Auto focus on 1st shot to get the correct distance to the smoke)
1 SB-600 wireless triggered from in-body commander.
More data in the exif.











Digital Globe




Digital Globe





Digital world on a blue background. 3d model... now with binary









digital iir filter design







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24
2011
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HIGH PASS FILTER APPLICATIONS. FILTER APPLICATIONS


High pass filter applications. Rotary filter press.



High Pass Filter Applications





high pass filter applications






    applications
  • (application) the act of bringing something to bear; using it for a particular purpose; "he advocated the application of statistics to the problem"; "a novel application of electronics to medical diagnosis"

  • A formal request to an authority for something

  • (application) a program that gives a computer instructions that provide the user with tools to accomplish a task; "he has tried several different word processing applications"

  • The action or process of making such a request

  • The action of putting something into operation

  • (application) a verbal or written request for assistance or employment or admission to a school; "December 31 is the deadline for applications"





    pass filter
  • A band-pass filter is a device that passes frequencies within a certain range and rejects (attenuates) frequencies outside that range. An example of an analogue electronic band-pass filter is an RLC circuit (a resistor–inductor–capacitor circuit).





    high
  • A high-frequency sound or musical note

  • at a great altitude; "he climbed high on the ladder"

  • A notably happy or successful moment

  • a lofty level or position or degree; "summer temperatures reached an all-time high"

  • A high point, level, or figure

  • greater than normal in degree or intensity or amount; "a high temperature"; "a high price"; "the high point of his career"; "high risks"; "has high hopes"; "the river is high"; "he has a high opinion of himself"











Kodak Infared HIE




Kodak Infared HIE





Black-and-white infrared negative films are sensitive to wavelengths in the 700 to 900 nm near infrared spectrum, and most also have a sensitivity to blue light wavelengths. The notable halation effect or glow often seen in the highlights of infrared photographs is an artifact of Kodak High Speed Infrared (HIE) black-and-white negative film and not an artifact of infrared light. The glow or blooming is caused by the absence of an anti-halation layer on the back side of Kodak HIE film, this results in a scattering or blooming around the highlights that would usually be absorbed by the anti-halation layer in conventional films.
Frank Lloyd Wright's Rudin House: panchromatic film on the left, infrared on the right

The majority of black-and-white infrared art, landscape, and wedding photography is done using orange (15 or 21), red (23, 25, or 29) or visually opaque (72) filters over the lens to block the blue visible light from the exposure. The intent of filters in black-and-white infrared photography is to block blue wavelengths and allow infrared to pass through. Without filters, infrared negative films look much like conventional negative films because the blue sensitivity lowers the contrast and effectively counteracts the infrared look of the film. Some photographers use orange or red filters to allow slight amounts of blue wavelengths to reach the film, and thus lower the contrast. Very dark-red (29) filters block out almost all blue, and visually opaque (70, 89b, 87c, 72) filters block out all blue and also visible-red wavelengths, resulting in a more pure-infrared photo that usually looks more contrasty.

Certain infrared-sensitive films like Kodak HIE must only be loaded and unloaded in total darkness. Infrared black-and-white films require special development times but development is usually achieved with standard black-and-white film developers and chemicals (like D-76). Kodak HIE film has a polyester film base that is very stable but extremely easy to scratch, therefore special care must be used in the handling of Kodak HIE throughout the development and printing/scanning process to avoid damage to the film.

As of November 2, 2007, "KODAK is preannouncing the discontinuance" of HIE Infrared 35 mm film stating the reasons that, "Demand for these products has been declining significantly in recent years, and it is no longer practical to continue to manufacture given the low volume, the age of the product formulations and the complexity of the processes involved."[6] At the time of this notice, HIE Infrared 135-36 was available at a street price of around $12.00 a roll at US mail order outlets.

Arguably the greatest obstacle to infrared film photography has been the increasing difficulty of obtaining infrared-sensitive film. However, despite the discontinuance of HIE, other newer infrared sensitive emulsions from EFKE, ROLLEI, and ILFORD are still available, but these formulations have differing sensitivity and specifications from the venerable KODAK HIE that has been around for at least two decades. Some of these infrared films are available in 120 and larger formats as well as 35 mm, which adds flexibility to their application. With the discontinuance of Kodak HIE, Efke's IR820 film has become the only IR film on the market with good sensitivity beyond 750 nm, the Rollei film does extend beyond 750 nm but IR sensitivity falls off very rapidly.











20110708 Great Cluster in Hercules (M13)




20110708 Great Cluster in Hercules (M13)





I don't do a lot of Clusters, because they are so difficult to process. The high dynamic range and small color saturation variations have alluded me to date. This is only a very short experiment (15min of LRGB data).

The test which I referred to: I wrote a Filter wheel / Camera interface which I can pass parameters to upon start, and it operates the exposures and filter wheel so it can work unattended. It's the first part of a program I'm writing to be an All-in-1 acquisition software. So far so good - the data pulled from the camera was solid, the filter wheel operated flawlessly, and the metadata was recorded in the FITS files as intended. Next step is to incorporate this scripting into a windows application with GUI and combine it with real-time image monitoring/comparison with zoom/pan functionality.









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24
2011
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