Signals and systems by js katre pdf

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Digital Signal Processing by J.S. Katre (Tech Max)

This document was uploaded by user and they confirmed that they have the permission to share it. If you are author or own the copyright of this book, please report to us by using this DMCA report form. Report DMCA. Home current Explore. Katre tech Max -wikiforu. Words: 7, Pages: Digital signal processing is used in a wide variety of applications. It is hard to get exact. Let us first look at the dictionary meanings of these words : Digital: Operating by the use of discrete signals to represent data in the form of numbers.

This leads -to a simple definition of DSP. Definition of DSP: DSP is defined as changing or analysing information which is measured as discrete sequences of numbers. System is nothing but physical device that performs an operation on a signal. Input Output Processing Fig. S-1 : Signal processing As shown in Fig. S-I, when we apply an input signal to the system, the system will process the signal and we get the expected response.

This phenomenon is called as signal processing. Input signal : It is the signal generated from some transducer or from some cOIm? It may be. Generally input signal is analog in nature. It ;is. Anti-aliasing filter : Anti aliasing filter is basically a low pass filter. It is used for the following purposes. Ca It removes the high frequency noise contain in input signal.

That means it is used to band limit the signal. Sample and hold circuit : As the name indicates; this block takes the samples of input signal. It keeps the voltage level of input signal relatively constant which is the requirement of ADC. Some times amplifiers are used to bring voltage level of ADC. This is required because digital signal processor accepts the signal which is digital in nature. Digital signal processor : It processes input signal digitally. In a simple languages processing of input 'signal making modifying the signal as per requirement.

Digital to analog converter CAC : The output of digital signal processor is digital in nature. But the required final output is analog in nature. So to convert digital signal into analog signal DAC is used. Reconstruction filter : Output signal of DAC is analog, that means it is a continuous signal.. But it may contain high frequency components. Such high frequency components are unwanted. To remove these components; reconstruction filter is used.

Moreover, digital systems can be ported to different hardware. IDSP-4 ' 2. Repeatability : Digital systems can be easily duplicated. Simplicity : It is easy to built any digital system as compared to an analog one. Accuracy : To design analog system; analog components like ,resistors, capacitors and inductors are used. The tolerance of these components reduce accuracy of analog 'system: 'Ybile in case of DSP ; much better accuracy is obtained.

Remote processing : Analog signals are difficult to store because of problems like noise and distortion. While digital signal can be easily stored on storage media like magnetic tapes, disks etc. Thus compared to analog signals; digital signals can be easily transposed. So remote processing of digital signal can be done easily. Implementation of algorithms: The mathematical processing algorithms can be easily implemented in case of digital signal processing.

But such algorithms are difficult to implement in case of analog signals. Easy up gradations : Because of the use of software; digital signal processing systems can be easily upgraded compared to analog system. Compatibility : In case of digital systems; generally all, applications needs standard hardware. Thus operation of dsp system is mainly dependent on software. Hence universal compatibility is possible compared to analog systems.

Cheaper: In many applications; the digital systems are comparatively cheaper than analog systems. Even though there are certain disadvantages as follows : 1. System complexity : The digital signal processing system, makes use of converters. Similarly in many applications; the time required for this conversion is more. But always there is a practical limitation in the speed 'of processors and ADC. Power consumption : A typical digital signal processing chip contains more than 4 lill transistors.

Thus power dissipation is more in dsp systems compared to analog systems. Comparison' between Digital and Anal99 Signal Processing TableS-1 shows comparison between digital and analog signal processing. Therefore we must know its exact meaning. Basically it is a physical quantity. It varies with some dependent or independent variables. Every signal is having its own characteristic. The processing of signal mainly depends on the characteristics of that particular signal.

So classification of signal is necessary. Broadly the signals are classified as follows:. Continuous valued and discrete valued signals Periodic and non-periodic signals Even and odd signals Energy and power signals Deterministic and random signals Multichannel and multidimensional signals. This signal- is having some value at every instant ijf time. Exan1ples : Sinewave, cosinewave, triangular wave etc. Similarly certain electrical signals derived m proportion with physical.

Some of the continuous signals are as shown in Fig. Digital Signal Processing By J. Digital Signal Processing By S. Parhi September 2,

Digital signal processing by j.s. katre (tech max)

This document was uploaded by user and they confirmed that they have the permission to share it. If you are author or own the copyright of this book, please report to us by using this DMCA report form. Report DMCA. Home current Explore. Katre tech Max -wikiforu. Words: 7, Pages: Digital signal processing is used in a wide variety of applications.

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Digital Signal Processing by J.S. Katre (Tech Max)

We are currently not accepting payments for printed books. Please call to place your order. Pune University books: Mumbai University books: Gujarat University books: Author Name : J. Description Additional information This book is an exclusive material for Engineering Degree Subject.

The reason is the electronic devices divert your attention and also cause strains while reading eBooks. This book is to provide the reader with a precise, practical and up-to-date exposition of signals and systems. EasyEngineering team try to Helping the students and others who cannot afford buying books is our aim. For any quarries, Disclaimer are requested to kindly contact us , We assured you we will do our best.

The reason is the electronic devices divert your attention and also cause strains while reading eBooks. This book is to provide the reader with a precise, practical and up-to-date exposition of signals and systems. EasyEngineering team try to Helping the students and others who cannot afford buying books is our aim. For any quarries, Disclaimer are requested to kindly contact us , We assured you we will do our best. Thank you.

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Signals and Systems - TechMax Publications by J. S. Katre

The reason is the electronic devices divert your attention and also cause strains while reading eBooks. This book is to provide the reader with a precise, practical and up-to-date exposition of signals and systems. EasyEngineering team try to Helping the students and others who cannot afford buying books is our aim. For any quarries, Disclaimer are requested to kindly contact us , We assured you we will do our best.

Что же я делаю. - подумал Бринкерхофф. Мидж подошла к принтеру и, забрав распечатку очередности задач, попыталась просмотреть ее в темноте. - Ничего не вижу, - пожаловалась.  - Включи свет. - Прочитаешь за дверью. А теперь выходи.


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