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.
Q. (a) Let a unit impulse of voltage v(t) = δ(t) be applied to a series combination of R = 20 and L = 10 mH. Determine the current i(t)in the series circuit. (b) Repeat (a) for
design using softwares (LEdit7, LTspice) the project has many aspects and I would like you to check them on the website with my personal password. in the project specifications (d
Q. Draw a neat circuit of Colpitt's oscillator using an n-p-n transistor. Give its equivalent circuit obtain expressions for (i) frequency of oscillation and(ii) minimum gain for s
Configured dual processor architecture In centralized SPC, dual processor architecture can be configured to operate in following one of three modes: 1. Standby mode: In
Managing Change: 1 The prominent actors included in the change procedure in an organisation are Change Makers, Change Agents, Change Leaders and they play a strategic role in
Potentiometric type DVM: A potentiometric type of DVM, employs voltage comparison technique. In this DVM the unknown Voltage is compared with a reference voltage value is fixed by
Q. In a CD amplifier,given Rs =4k?, µ=50 and rd= 35k μ. Find the voltage gain Av. The voltage gain, A v = Vo / V i = µR s / (µ+1) R s + rd = 50*4* (103 )/ (50+1)*4*103
Q. The inductance per unit length in H/m for parallel-plate infinitely long conductors in air is given by L = µ 0 d/w = 4π×10 -7 d/w, where d and w are inmeters. Compute L (per un
Q. Design a water supply scheme for a station, adopting the following data - a) Source of water - River flow at a distance of 1 km. b) Requirement of water - 1 lack gallons p
Control Strategies Equation shows that output voltage V0 can be controlled through α and this duty cycle α can be varied by various strategies which are as follows.
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