Analog communication j s katre free book pdf

Digital signal processor: It processes input signal digitally. This is required because digital signal processor accepts the signal which is digital in nature. Some times amplifiers are used to bring voltage level of ADC.Īnalog to digital converter (ADC): As.the name indicates this block is used to convert analog signal into digital form. It keeps the voltage level of input signal relatively constant which is the requirement of ADC. Sample and hold circuit: As the name indicates this block takes the samples of input signal. Generally input signal is analog in nature.Īnti-aliasing filter: Anti aliasing filter is basically a low pass filter.Ĭa) It removes the high frequency noise contain in input signal.Īs the name indicates it avoids aliasing effect. It may be.biomedical signal like ECG or EEG. Input signal: It is the signal generated from some transducer or from some cOImunication system. S-2 Reconstruction filter Output IDSP-3.: The different blocks of this system are as follows: 1. S-2 shows that the basic elements of digital signal processing system Analog input Anti Aliasing x(t) filter Digital signal processor Sample and hold circuit Fig. This phenomenon is called as signal processing.īasic Elements of DSP and its Requirements: Fig. S-I, when we apply an input signal to the system, the system will process the signal and we get the expected response. System is nothing but physical device that performs an operation on a signal.

System: System is associated with signals. This leads -to a simple definition of DSP.ĭefinition of DSP: DSP is defined as changing or analysing information which is measured as discrete sequences of numbers. Processing: To perform operations on data according to programmed instructions. Signal: A variable parameter by which information is conveyed through an electroic circuit.

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Analog communication j s katre free book pdf