Login

Contact Us
Homework
Homework Questions? Ask a Tutor for Answers ASAP
Not a Homework Question?
How JustAnswer Works:
Ask an Expert
Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
Get a Professional Answer
Via email, text message, or notification as you wait on our site.
Ask follow up questions if you need to.
100% Satisfaction Guarantee
Rate the answer you receive.
Ask akch2002 Your Own Question
akch2002
,
Engineer
Category:
Homework
Satisfied Customers:
3094
Experience:
Home work expert
46493125
Type Your Homework Question Here...
akch2002 is online now
2. In a certain concert hall, echoes of the original signal
Resolved Question:
2. In a certain concert hall, echoes of the original signal x(n) are generated due to the reflections at the walls and ceiling. The audio signal experienced by the listener y(n) is a combination of x(n) and its echoes. Let y(n) = x(n) + α x(nk) where k is the amount of delay in samples and α is its relative strength.
Let x(n) = cos (0.2πn) + 0.5 cos (0.6πn), α = 0.1, k = 50. Generate 200 samples of y(n)
and plot them. Also obtain the system function.
Submitted:
4 years ago.
Category:
Homework
Share this conversation
Expert:
akch2002
replied 4 years ago.
Can you explain what is nn in x(n) = cos (0.2πn) + 0.5 cos (0.6πn)? Is it n^2?
I will use Excel to generate 200 samples of y from y1 to y200.
Ask Your Own Homework Question
Customer:
replied 4 years ago.
not nn,it is pi n
Expert:
akch2002
replied 4 years ago.
x(n) = cos (0.2pi*n) + 0.5 cos (0.6pi*n)
Hence, y(n) = cos (0.2pi*n) + 0.5 cos (0.6pi*n)+0.1x(n50)
n ≥ 50
Is it correct?
If, yes; kindly indicate dead line for replying this question.
Ask Your Own Homework Question
Customer:
replied 4 years ago.
n greaer than or equal to 50 not given.rest is correct
This is a digital signal processing question.Iwant it fast within 2 hours
Expert:
akch2002
replied 4 years ago.
Do we have to calculate y(1), y(2),.........y(200)?
If, yes; we will have y(1) = cos (0.2pi*1) + 0.5 cos (0.6pi*1)+0.1x(49)
and x(49) = cos (0.2pi*49) + 0.5 cos (0.6pi*49).
Putting this, we can find out y1 and other values y(2),y(3),y4,......y(200). Is this what you want?
I can reply in 2 hours after you clarify my doubt.
Ask Your Own Homework Question
Expert:
akch2002
replied 4 years ago.
Are you there?
Ask Your Own Homework Question
Expert:
akch2002
replied 4 years ago.
Here is answer.
excel file
Ask Your Own Homework Question
Customer:
replied 4 years ago.
should be done in matlab
Expert:
akch2002
replied 4 years ago.
I don't have access to MATLAB but I will try any.
Ask Your Own Homework Question
Expert:
akch2002
replied 4 years ago.
MATLAB code and plot is given below.
n = 0:1:50;
y = cos(0.2*pi*n)+0.5*cos(0.6*pi*n) +0.1*cos(0.2*pi*(n50)) +0.05*cos(0.6*pi*(n50));
plot(n,y)
Ask Your Own Homework Question
Customer:
replied 4 years ago.
answer is ok
what is its system function?
Expert:
akch2002
replied 4 years ago.
THIS ANSWER IS LOCKED!
You need to spend $3 to view this post.
Add Funds
to your account and buy credits.
akch2002, Engineer
Category:
Homework
Satisfied Customers:
3094
Experience:
Home work expert
akch2002 and 4 other Homework Specialists are ready to help you
Ask your own question now
Share this conversation
JustAnswer in the News:
Askadoc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses workfromhome jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
What Customers are Saying:
Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.
Mary C.
Freshfield, Liverpool, UK
<
Previous

Next
>
Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.
Mary C.
Freshfield, Liverpool, UK
This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!
Alex
Los Angeles, CA
Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.
GP
Hesperia, CA
I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.
Justin
Kernersville, NC
Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.
Esther
Woodstock, NY
Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.
Robin
Elkton, Maryland
He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.
Diane
Dallas, TX
Meet The Experts:
LogicPro
Engineer
Satisfied Customers:
4925
Expert in Java C++ C C# VB Javascript Design SQL HTML
<
Last

Next
>
http://ww2.justanswer.com/uploads/ComputersGuru/20100213_051118_Photo41.JPG
LogicPro's Avatar
LogicPro
Engineer
Satisfied Customers:
4925
Expert in Java C++ C C# VB Javascript Design SQL HTML
http://ww2.justanswer.com/uploads/BU/BusinessTutor/201222_115741_Kouki2.64x64.jpg
Manal Elkhoshkhany's Avatar
Manal Elkhoshkhany
Tutor
Satisfied Customers:
4538
More than 5000 online tutoring sessions.
http://ww2.justanswer.com/uploads/LI/lindaus/2012610_04811_IMG20120609164157.64x64.jpg
Linda_us's Avatar
Linda_us
Finance, Accounts & Homework Tutor
Satisfied Customers:
3138
Post Graduate Diploma in Management (MBA)
http://ww2.justanswer.com/uploads/chooser77/20090818_162025_Chris.jpg
Chris M.'s Avatar
Chris M.
M.S.W. Social Work
Satisfied Customers:
2602
Master's Degree, strong math and writing skills, experience in oneonone tutoring (college English)
http://ww2.justanswer.com/uploads/JawaadAhmed/2009627_12137_SIs_SHadi.jpg
F. Naz's Avatar
F. Naz
Chartered Accountant
Satisfied Customers:
2126
Experience with chartered accountancy
http://ww2.justanswer.com/uploads/JK/jkcpa/2011116_182614_jkcpa.64x64.jpg
Bizhelp's Avatar
Bizhelp
CPA
Satisfied Customers:
1887
Bachelors Degree and CPA with Accounting work experience
http://ww2.justanswer.com/uploads/avremote/photoa.jpg
Seanna's Avatar
Seanna
Tutor
Satisfied Customers:
1781
3,000+ satisfied customers, all topics, A+ work
Related Homework Questions
Question
Date Submitted
Dealine is today, 10pm CST
6/26/2016
6/27/2016
LogicPro
A $40,000, 15 percent, 180day note, dated July 8 is
6/26/2016
6/26/2016
F. Naz
Cumulative Exam Part 1 of 7  Know Law 40 multiple am
6/25/2016
6/27/2016
Chris M.
University of Phoenix Material Linux® Script Worksheet To:
6/24/2016
6/26/2016
Russell H.
The United States Drug Enforcement Agency suspected that
6/23/2016
6/27/2016
Donna Kakonge
I need help with Penn exam 061579 financial accounting the
6/22/2016
6/23/2016
Manal Elkhoshkhany
I have 10 questions on Economics
6/21/2016
6/21/2016
GLENN
I am having issues doing the right... I am having issues
6/21/2016
6/21/2016
Russell H.
Is there anyone who can help me with questions 13 of this
6/21/2016
6/25/2016
Raj
I need your help on this final assignment that you have been
6/19/2016
6/20/2016
LogicPro
X
Ask a Tutor
Get a Professional Answer. 100% Satisfaction Guaranteed.
79 Tutors are Online Now
Type Your Homework Question Here...
characters left: