Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Write short note on Quantization.
Quantization: This is the first step in PCM. The whole amplitude range of the modulating signal is divided in a number of standard levels termed as quantization levels at equal intervals as demonstrated in figure. These levels are, after that transmitted, in binary code. Therefore, the actual number of these standard levels is a power of two as 4, 8,16,32,64,128 and so on. For the sake of simplicity, figure demonstrates only eight levels, however practical systems use 128 levels or even higher. A new signal is generated through producing, for every sample, a voltage level equivalent to the mid-point level of the standard level wherein the sample falls. Therefore if a range of 0-4 V were divided in four 1V standard levels and the signal was sampled while this was 2.8V, the quantizer will output a voltage of 2.5 V, and hold which level till the next sampling time 2.5 V corresponds to the midpoint of the third standard level. The result in a stepped wave forms that follow, the contour of the modulating signal. This discritisation of the modulating signal is termed as Quantization. Given figure demonstrates the modulating signal m(t) and quantized signal (mq(t)) when eight standard levels are utilized. The quantized wave forms are an approximation to the original signal. The difference in between the two wave forms amounts to noise added to the signal through the quantization process. Therefore the error introduced is termed as quantizaton error.
FIG - Modulating Signal and Quantized Signal
Convert ASCII code to its BCD equivalent. This can be achieved by simply replacing bits in upper four bits of byte by four zeros. For illustration the ASCII '1' is 32h = 0010B. By
WhT is pollymara
8085 the interrupts are classified as Software and Hardware interrupts.
What are the advantages of electronic payment system? Advantages of the electronic payment system are illustrated below: This gives good security schemes. Four important sec
A macro definition consists of ? Ans. A macro Definition have: A macro prototype statement, one or various model statements and also Macro pre-processor statements
explain michesons inferometer
What is XMS Memory system is divided into 3 main parts. TPA (transient program area), system area and XMS (extended memory system). Type of microprocessor in your computer sign
Name the platforms by which visual basic applications are available? Ans) Most of the visual basic applications are available on 32 bit Intel platforms. These applications also
Multiple Instruction and Multiple Data stream (MIMD): In this categorization, numerous processing elements and multiple control units are ordered as in MISD. However the differ
Q. High Level Language Program Characteristics? So it is clear that new architectures must support high-level language programming. A high-level language system can be implemen
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd