User Account

All Pages

Write code to calculate and plot the fourier transform

Assignment Help Mechanical Engineering
Reference no: EM13857188

Question 1

The audio files dial0.wav, dial1.wav, ..., dial9.wav contain telephone dial (signalling) tones for the numbers 0 through 9. Use the code provided in wavproc.m to read the .wav files. Play through the PC speakers using MATLAB's sound function.

Part (a)

Write code to calculate and plot (on screen) the Fourier Transform magnitude for each of the ten individual digits. Each number is signalled using two simultaneous tones (see the web page cited above for further information). Note that the sample rate is 8kHz. Make sure your frequency axis is correctly scaled. In your report, include:

1. Your source code listing.

2. Two representative time-domain waveforms.

3. Two representative frequency-domain waveforms.

Part (b)

Show your measured frequency components, explain how you derived them from the FFT, and compare them to what is expected from the standard DTMF frequency pair allocation.

Attachment:- Downloads.rar

Reference no: EM13857188

Questions Cloud

Utilizing the articles from apa (2003) : Utilizing the articles from APA (2003) and Krishnamurthy et. Al. (2004), discuss at least three important areas of competency for the clinician involved in assessments; a minimum of one of these three should address a multicultural competency.
What similarities exist in the symptoms of these disorders : Explain the difference between bipolar affective disorder, postpartum depression, cyclothymic disorder, dysthymia and seasonal affective disorder.what similarities exist in the symptoms of these disorders?
Write paper on the given article about economic reforms : Write three pages paper on the given article about Economic Reforms in international business and liberaziton trade system ( IMF,WTO, Globarization and ....) .
Reaction to intel announcement : Discuss whether the analysts following Intel appear to have been influenced by any psychological phenomena, both generally and in their reaction to Intel's announcement in September 2000.
Write code to calculate and plot the fourier transform : Write code to calculate and plot (on screen) the Fourier Transform magnitude for each of the ten individual digits. Each number is signalled using two simultaneous tones. Note that the sample rate is 8kHz. Make sure your frequency axis is correctl..
Product and quotient rules differentiate : The product and quotient rules Differentiate
Find the given function : Suppose f(Π/3) = 4 f'(Π/3) = -2, g(s) sinx and h(x) = (cosx/f(x)). - Find g'((Π/3)
Techniques of epideictic speech : Two techniques of epideictic speech are:  Repetition and complexity. Motivation and inspiration. Identification and magnification. Prop utilization and gesturing
Calculate the total tax payable : Calculate the total tax payable/receivable by the investor.

Reviews

Write a Review

Mechanical Engineering Questions & Answers

  What of diameter of steel rod is required to support tension

What of diameter of steel rod is required to support a tension load of 44.5kn?assume that the allowable stress for the steel is F=165n/mm.

  A 4 kw motor is driving an oil pump with an efficiency of

a 4 kw motor is driving an oil pump with an efficiency of 95 down a 10 mm diameter pipe. if the velocities of the fluid

  Find the pressure variation in the directions tangent and

a fluid speficic weight 60 lbft3 flows upward at an inclination of 30 degrees above the horizontal. if the flow is at

  Temperature deratings in addition to the options you

you are looking for a power unit to run an irrigation pump in your operation. the pump requires 92 horsepower to turn

  What would happen if the air filter was partially choked

What would happen if the air filter was partially choked. If the piston rings were leaking state what you would expect the results of a, b, c, and d above would be.

  Acompressed spring above the piston exerts a force of 60 n

a gas is contained in a vertical frictionless piston cylinder device. the piston has a mass of 4 kg and crosssectional

  If the oxygen undergoes adiabatic expansion through the

oxygen at 710 kpa and 365 celcius enters a staedy flow nozzle with a low velocity and leaves at 90 kpa. if the oxygen

  Determine the stress in the wires

a 1.5 ton crate is hoisted by three steel wires. each wire is 1/4 in. in diameter and each carries one-third of the load. determine the stress in the wires.

  A spherical balloon contains 2 kg of water at 230 degrees c

a spherical balloon contains 2 kg of water at 230 degrees c 400 kpa the specific volume is 0.5951 m3kg. the balloon

  Determine specific enthalpy and velocity at exit of valve

Steam flows at steady state through a well-insulated pressure-reducing valve. At the inlet, the pressure is 4 MPa, the temperature is 320°C, and the velocity is 60 m/s. The pressure of the steam at the exit is 700 kPa.

  Determine the tension in the cables de and bc

Determine the tension in the cables DE and BC and the components of reaction of the smooth collar at A. The sign weighs 75 lb.

  Size of the tank and the final pressure in the tank

An insulated rigid tank is divided into two equal parts initially by a partition. Initially, one part contains 5 kg of air at 800 kPa and 75° C and the other part is evacuated. The partition is now removed and the air expands into the entire tank. De..

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!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

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