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!
Q. What do you mean by Companding?
Companding is the process of compressing and expanding. It comprises compressing the signal at the transmitter and expanding it at the receiver. The modulating signal to be transmitted is passed through an amplifier that has correctly adjusted non linear transfer characteristic, favouring small amplitude signals. These are artificially large when they are quantized and so the effect of quantizing noise upon them is reduced. Correct amplifier relations are restored at the receiver by expander. It's desirable to agree to some standard for companding in order to realize hardware efficiencies and to permit receiving and sending by a variety of users. The most common application of companding is in voice transmission. Japan and North America have adopted a standard compression curve called µ law companding. Law µ companding formula is given 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 instant at time
µ = Parameter used to define the amount of compression
Vout= Compressed output voltage.
Pins and Signals As discussed earlier that 8085 microprocessor chip has 40 pins shown various pins and signals of 8085 microprocessor. All these signals can be c
Capacitors : These are electrical condensers having a system of electrical conductors and insulators. The simplest form consists of two parallel metal plates separated by a layer
The corners of wedge-shaped block are A(0,0,2), B(0,0,3), C(0,2,3), D(0,2,2), E(-1,2,2) and F(-1,2,3) and the reflection plane goes the Y-axis at 450 between (-X) & (Z) axis. Calcu
Distinguish between ferromagnetic and paramagnetic materials, mentioning at least one example of each. Ferromagnetic Materials: These are materials wherein magnetic dipoles i
Q. What do you mean by Quartz crystals? Synthetic quartz is composed of Silicon and Oxygen (Silicon Dioxide) and is cultured in autoclaves under high pressure and temperature.
Change the brightness of the most beneficial illuminated LED to represent voltages among the ranges so that if the value is half way among the range then the LED should be 50% brig
What is the size of ports in 8255? Port-A : 8-bits Port-CU : 4-bits Port-B : 8-bits Port-CL : 4-bits
Q. Explain, with the aid of diagrams, the following in relation to the construction of power transformers. Include the advantages and disadvantages in your description. a) Core
a) What is meant by frequency response and how would you check the performance of your amplifier? b) Calculate the Voltage Gain of your amplifier at a range of frequencies suffic
Illustrate in detail digital encoders. Illustrate the following with their application: Photo-conductive cell Photo-voltaic cell
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