Explain in detail companding, Computer Engineering

Assignment Help:

Explain in detail companding.

Companding: It is the process of compressing and expanding. This includes compressing the signal at the transmitter and expanding this at the receiver. The modulating signal to be transmitted is passed by an amplifier that has correctly adjusted non linear transfer characteristic, favoring minute amplitude signals. Such are the artificially large while they are quantized and therefore the effect of quantizing noise upon them is decreased. The correct amplifier relations are restored at the receiver by expander. This is desirable to agree to several standards for companding as order to realize hardware efficiencies and to permit sending and receiving with a variety of users. The most general application of companding is in voice transmission. Japan and North America have adopted a standard compression curve termed as µ law companding. The law µ companding formula is specified by

Vout = ( Vmax X In (1+ µ Vin / Vmax) / In (1+ µ ) Where

Vmax = Maximum uncompressed modulating input amplitude.

Vin = Amplitude of the input signal at particular immediate at time

µ = Parameter used to describe the amount of compression

Vout = Compressed output voltage.

1421_Companding Curves for PCM.png

FIG - Companding Curves for PCM


Related Discussions:- Explain in detail companding

Define bootstrap loader, Define bootstrap loader? The ROM portion of ma...

Define bootstrap loader? The ROM portion of main memory is required for storing an initial program known as bootstrap loader. It is a program whose function is to start the com

Network message transfer, Consider a network message transfer among a sourc...

Consider a network message transfer among a source S and a destination D by 3 routers R1, R2 and R3 as given below:-               S -------- R1 --------- R2 --------- R3 ---

Characteristics of magnetic disk, Q. Characteristics of Magnetic disk? ...

Q. Characteristics of Magnetic disk? Tracks and Sectors: Disk is divided in concentric rings known as tracks. Thus a track is one complete rotation of disk underneath read/wr

Explain about cseg segment, CSEG SEGMENT  ASSUME CS:CSEG, DS:CSEG, SS:CS...

CSEG SEGMENT  ASSUME CS:CSEG, DS:CSEG, SS:CSEG  ORG 100h START:MOV AX, CSEG; Initialise data segment  MOV DS, AX; register using AX  MOV AL, NUM1; Take the first num

Illustrate the list of key differences to word processors, Illustrate the l...

Illustrate the list of key differences to word processors The following is a list of key differences to word processors: -  Most word processors force users to work on a doc

What do you understand by work flow automation, What do you understand by w...

What do you understand by work flow automation? Work Flow Automation: Organizations often standardize processes over the organization and encourage users to adopt them. Ev

Subprogram, create a stored procedure to debit a bank account user must ent...

create a stored procedure to debit a bank account user must enter account no. and amount to debited from account .the minimum balance in account should be 500. if the debited amoun

Representation in prolog - logic programs, Representation in Prolog - Logic...

Representation in Prolog - Logic Programs: If we justimpose some additional constraints on first-order logic, so than we get to a representation language knowing as logic prog

What is fork swap, What is Fork swap? "Fork ()" is a system call to mak...

What is Fork swap? "Fork ()" is a system call to make a child process. When the parent process calls "fork()" system call, the child process is formed and if there is short of

Determine condition how the output changed of JK flipflop, The output of a ...

The output of a JK flipflop with asynchronous preset and clear inputs is '1'. The output can be changed to '0' with which conditions ? Ans. Through applying J = 1, K = 1 and u

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd