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

How many two-input AND and OR gates are required to realize , How many two-...

How many two-input AND and OR gates are required to realize Y=CD+EF+G ? Ans. Y=CD+EF+G No. of two i/p AND gates=2 No. of two i/p OR gates = 2 One OR gate to OR CD and EF

Explain briefly the function of layers, Explain briefly the function of dif...

Explain briefly the function of different layers which are covered under end to end layer connectivity. Different layer are as follows: 1. Transport Layer:  This is res

What is a piconet in a bluetooth context, Problem: (a) IEEE802.11 supp...

Problem: (a) IEEE802.11 supports two types of network architecture, describe these architectures with the support of diagrams detailing the network components. (b) The MAC

Binary tree can be converted in to its mirror image, A binary tree can be c...

A binary tree can be converted in to its mirror image By traversing it in Preorder

Explain simple network management protocol, Explain SNMP (simple network ma...

Explain SNMP (simple network management protocol). Once SNMP is used the management station sends a request to an agent asking this for commanding or information this to update

Explain about the acoustic tablet, Explain about the Acoustic tablet Ac...

Explain about the Acoustic tablet Acoustic (or sonic) tablet use sound waves to detect a stylus position. Either strip microphones or point microphones can be used to detect th

What is meant by branch instruction, What is meant by branch instruction? ...

What is meant by branch instruction? A branch instruction is an instruction which changes the contents of the PC with the branch target address. This address is usually get by

Can the size of an array be declared at runtime, Can the size of an array b...

Can the size of an array be declared at runtime?              No, the size of an array can't be declared at run time, we always require to mention the dimensions of an array at

How to define a filename in dos, Q. How to define a Filename in DOS? Ea...

Q. How to define a Filename in DOS? Each file is given a name so that it can be referred to later. This name is termed as Filename. The filename in DOS can be up to eight alpha

Explain application and system software, Fundamentals of IT 1. Explain ...

Fundamentals of IT 1. Explain the Impact of Information Technology on governments and educational organizations. 2. Explain application and system software. 3. Briefly ex

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