Answered
Wavelet translation and dilation
The translation parameter ranges over the length of the input signal. However, this means that you have to think about edge effe...

14 years ago | 1

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Answered
Scaling the colormap
You can use caxis() to provide a range of values -- min,max You can also define your own colormap as a matrix map = and the...

14 years ago | 0

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Wavelet bandwith, centre frequency
Hi Chris, here is a quick example of the first option above: x = zeros(1000,1); x(500) = 1; cfs = cwt(x,1:2:64,'sym8'...

14 years ago | 0

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Wavelet bandwith, centre frequency
Hi Chris, there are a couple things you can do: 1.) If you want to see the support of wavelets at different scales, you can i...

14 years ago | 0

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Answered
Matlab course
<http://www.mathworks.com/#hp_training>

14 years ago | 0

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Filtering contaminants out of a sound clip
Sounds like you need a highpass filter. # Look at the frequency content of your signal using spectrum.periodogram # Decide o...

14 years ago | 0

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How to change M*1*N matrix to M*N matrix
Hi, use squeeze() X = randn(10,1,10); Y = squeeze(X);

14 years ago | 1

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find values
X = randi([-5 110],10,10); X(X<0 | X>30) = NaN;

14 years ago | 0

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Answered
Sampling Data (Urgent help needed)
You can also change the increment between the values in your x vector so that you do have 0.22. x = 0:.01:1-0.01; U = exp(-...

14 years ago | 0

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peak value at the centre of F(0,0) in magnitude plot of fourier transform
You wrote freqz() above. freqz2() is for a filter. For example: h = 0.01*ones(10,10); sum(h(:)) H = freqz2(h,10,10...

14 years ago | 0

Answered
peak value at the centre of F(0,0) in magnitude plot of fourier transform
At any rate, I think only when you shift the 2-D Fourier transform does it end up in the middle. Note that: rng default; ...

14 years ago | 0

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error in program
Something is wrong with your x vector from [x,fs]=wavread(PathOrig); Please show us what is returned if you enter ...

14 years ago | 0

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garchfit significance
You can evaluate that statistic on the t(N-p) pdf where N is the length of the time series and p is the number of parameters you...

14 years ago | 0

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Filter Question - FIR and IRR
You have to use a supported specificaton string. If you want to limit the order to a fixed value, then you have to realize, you ...

14 years ago | 0

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Answered
Filter Question - FIR and IRR
Hi Alex, if you read the documentation, order specification is possible in both fdesign.bandpass and fdesign.lowpass. Please loo...

14 years ago | 0

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k means clustering: Classifying subsequent to a particular cluster - can it be done?
k-means is an unsupervised learning algorithm that is sensitive to the number of clusters you choose AND to the initial start ce...

14 years ago | 0

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GARCH significance, what is the precise number?
Sorry, I may have misinterpreted your original question. If you are talking about the output of garchfit: Parameter Va...

14 years ago | 0

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GARCH significance, what is the precise number?
Hi, You have to evaluate the t-statistic on the appropriate t-distribution. The t-distribution is characterized by one parameter...

14 years ago | 0

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Answered
Filter Question - FIR and IRR
You did not tell us your sampling frequency. I'm assuming that your sampling frequency is not 140 kHz in this instance because y...

14 years ago | 0

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setting graph defaults
Search for "Setting Default Property Values" in the MATLAB User's Guide. You can set default figure properties with set(0,...) ...

14 years ago | 1

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QPSK modulator
Do you have the Communication System Toolbox? You can use the System objects, comm.QPSKModulator, and comm.QPSKDemodulator. You ...

14 years ago | 0

Answered
Can i make Title and x and y label Bold
plot(randn(100,1)); title('Test','fontweight','bold','fontsize',16); xlabel('Time','fontweight','bold','fontsize',16);

14 years ago | 11

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Answered
Split Axes for cyclic process plotting
Hi, you can always label your axis as you wish: x = [4 3 2 1 0 -1 -2 -3 -2 -1 0 1 2 3 4]; plot(randn(30,1)); set(gc...

14 years ago | 0

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DTMF- is my signal processing method possible?
Hi, There is an entire DTMF demo in the Signal Processing Toolbox. <http://www.mathworks.com/products/signal/demos.html?file=...

14 years ago | 1

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Answered
delay signal by 'n' samples
Why? Seems to me that the way Walter gave you works. original_signal = randn(10,1); n = 5; delayed_signal = [ze...

14 years ago | 0

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Filter Question - FIR and IRR
fdesign.bandpass() works with normalized frequencies unless you input the sampling frequency as a scalar trailing all other spec...

14 years ago | 0

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Filter Question - FIR and IRR
Hi, if you specify your filter design in Hz, then the sampling frequency has to be a trailing scalar. In the following: d =...

14 years ago | 0

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filtfilt does not work on single precision data in ver R2010b
Hi, in the overview for the Signal Processing Toolbox, it states: "Supported Data Types The Signal Processing Toolbox soft...

14 years ago | 0

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Answered
png to eps conversion
Make the plot that you want in MATLAB and save the plot as an .eps file print -depsc figure.eps or the appropirate -deps...

14 years ago | 0

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Answered
How to see the freq response of a transfer function
Also, you see that your plotting frequency response has zero as 0-1j and 0+1j. That means there are zeros on the unit circle at ...

14 years ago | 0