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

# real life business subsystem, Is production, marketing, personal, materia...

Is production, marketing, personal, material, finance are the real life business subsystems? if yes, then how?

Illustrate working of pocket and pc-card modems, Q. Illustrate working of P...

Q. Illustrate working of Pocket and PC-Card Modems? Pocket Modems: Small external Modems used with notebook PCs.  PC-Card Modems:  PC and Modems are read with PCMCIA slots w

What is the kernel, What is the kernel?          A more common definiti...

What is the kernel?          A more common definition is that the OS is the one program running at all times on the computer ,usually  known as the kernel, with all else being

Effect of tree supply on death rate, The effect of tree supply on death ra...

The effect of tree supply on death rate depends upon a ratio comparing the number of trees that are actually available per person per year to the desired number of trees per pers

What is critical section problem, What is critical section problem?  Co...

What is critical section problem?  Consider a system having of 'n' processes. Each process has segment of code known as a critical section, in which the process may be changing

Advantages & disadvantages of public-key cryptography, Advantages & Disadva...

Advantages & Disadvantages Enhanced security and convenience: private keys never require be transmitting or revealing to anyone.  They can givce a method for digital signatu

Webforms application and to an mvc application, What is the difference amon...

What is the difference among adding routes, to a webforms application and to an mvc application? Ans) To add routes to a webforms application, we use MapPageRoute() process of

How to changing the directory in dos, Q. How to Changing the Directory in D...

Q. How to Changing the Directory in DOS? You can change the directory. After changing the directory, the new directory becomes the default directory. For example, you change th

Speed up factor, Remember, the value of α is between 0 and 1. Now, let us p...

Remember, the value of α is between 0 and 1. Now, let us put some values of α and compute the speed up factor for increasing values of number of processors.  We get that the S(N) k

Advntages of parallel processing oversequential computation, Advntages of p...

Advntages of parallel processing oversequential computation Parallel computing has the following benefits over sequential computing: i)    Accumulate time ii)   Solves b

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