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Passband Modulation


Active since 2012

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help me fix the code in which data extracted from a sound file are manipulated
a sound file with content consisting of 65120 rows of item as following shows <<http://i.imgur.com/FOt7n.png>> file source...

12 years ago | 1 answer | 0

1

answer

Question


how to multiply each row in a column by different numbers
say, a file consists of a single column with 10000 rows load file.txt a = file; k=1:10000; ...

12 years ago | 1 answer | 0

1

answer

Question


how to extract data from a sound file and do calculations with the data?
I have a sound file named “message.txt” containing the waveform of a voice message embedded in a sinusoid with frequency of 220 ...

12 years ago | 1 answer | 0

1

answer

Question


how to do tedious mathematical calculation with matlab
it is really tedious, probably impossible, to do the following equation using a calculator. Please note that cosine and sine fu...

12 years ago | 1 answer | 0

1

answer

Question


simple multiplication / summation using matlab
i want to do some complicate calculations by matlab of following <<http://s15.postimage.org/9llhk1xyh/Capture.png>> n=0...

12 years ago | 1 answer | 0

1

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Question


Revised: find the frequency corresponding to max. magnitude in spectrum (FFT)
the spectrum of a message is shown as follows <<http://s10.postimage.org/3q43852fr/Capture.png>> where magnitude plot of t...

12 years ago | 2 answers | 0

2

answers

Question


how to use FFT in matlab using imported data in time domain excel file
i have some polymers characterized by transmission terahertz time domain spectroscopy (THz-TDS).

12 years ago | 3 answers | 0

3

answers

Question


find the dominant frequency with the use of the command max
I have a file named “message.txt” containing the waveform of a voice message embedded in a sinusoid with frequency of 220 Hz, a...

12 years ago | 1 answer | 0

1

answer

Question


using convolution with matlab
x[n]=n^3-n^2, 0<n<3 h[n]=1/n, -2<n<-1 y[n] is the convolution of x[n] and h[n] how can i compute y[n] ?

12 years ago | 2 answers | 0

2

answers

Question


what is the purpose of the command line “y=y(1:64)”
Generate x[n]=2cos(0.2*pie*n), with a length of N=64 , that is,0<n<63 , using “x=2*cos(0.2*pi*n)” with “n=[0:63]”. Use the foll...

12 years ago | 2 answers | 0

2

answers

Question


create a piece of music using matlab??
given a note file named “toneA.m" ------ note A----- clear all Fs=8000; Ts=1/Fs; t=[0:Ts:1]; F_A=440; %Frequency ...

12 years ago | 7 answers | 0

7

answers

Question


find the mean, energy and power of cosine function
i am just a matlab beginner. x[n]=2cos(0.2*pi*n) with a length of N =100 , that is, ,0<N<99 plotted clear all n=[0:99]...

12 years ago | 1 answer | 0

1

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Question


processing phases/degrees confined within +-180degrees
a set data (1001 items of freuqency v 1001 items of degree) are output from Agilent PNA Network Analyzer. <<http://s14.posti...

12 years ago | 0 answers | 0

0

answers

Question


matlab beginner: use FFT in matlab and get phase plot
Sorry for asking this question again, but i have to (so urgent) i have some polymers characterized by transmission terahertz ...

12 years ago | 2 answers | 1

2

answers

Question


use FFT in matlab and get phase plot
i have some polymers characterized by transmission terahertz time domain spectroscopy (THz-TDS). ive now the time domain data...

12 years ago | 1 answer | 0

1

answer