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
Q Why we use addressing schemes? An operation code of an instruction tells the operation to be performed. This operation is executed on some data stored in memory or register.
Reply and discuss the role of the SAS 70 report in reviewing internal controls. Provide publicly available examples of SAS 70 reports and explain. Problem Discuss the
Q. What is High level formatting? In any disk system the space at some time in use would become discarded and therefore will be free for other application. Operating system ass
(a) Explain, using suitable examples, the functions of each of the sub system mentioned in the context of a large chain of supermarkets (i) Database Management Subsystem (ii)
Extend task 1 so that it now supports a memory buffer of limited size. Provide the same functionality as task 1 except now make the server work with a limited buffer size. Like
The various memory allocation functions are described below: (i) malloc( ) : It is a memory allocation function that assigns requested size of bytes and returns a pointer to t
A combinational circuit has 3 inputs A, B, C and output F. F is true for following input combinations A is False, B is True A is False, C is True A, B, C are
What is USB USB (UNIVERSAL SERIAL BUS) is intended to connect peripheral devices like mouse, keyboards, modems and sound cards to microprocessor through a serial data path and
Q. Explain about Dual In line Memory Modules? A DIMM is capable of delivering 64 data bits right away. Usual DIMM capacities are 64MB and up. Every DIMM has 84 gold patted conn
Advanced aspects of assembly language programming in this section. A number of these aspects give assembly an edge over high level language programming as far as efficiency is conc
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: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd