instruction stringlengths 31 27k |
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I have an image :
img = imread('pic.jpg');
Now, How can I get spectrum of that image?
|
Its true that HTC one M8 uses dual camera to achieve the 3D Dimension plus effect, but can anybody tell what is it called, if its a series of image manipulation?
Demonstrated here,
Video
|
I was watching this video where the presenter remarks:
For a discrete signal, time shift corresponds to phase change in a discrete signal but not vice versa.
I was trying to figure out how this could be proved. For example, if our discrete signal is
$f[n] = A \cos(\Omega_o n + n_o)$ where $ n,n_o \in Z$
If the sign... |
In a book [1], gives an equation (equation 5.31 in the book) for estimating frequency offset in OFDM systems proposed by Classen. the procedure is:
first, two OFDM symbols, $y_l [n]$ and $y_{l+D} [n]$ , are saved in a memory after synchronization. then, the signals are transformed into ${Y_l [k]}_{k=0}^{N-1}$ and ${Y... |
I have images like below:
I want to find some measures describing black spots dispersion and diversity.
First measures I use are mass center off all black spots, mean area of spot, stdev of area need more ideas.
I want measures to describe irregularity, differences etc.
|
Why is FFT a good method for detection of bearing faults? Why can't we do the analysis in time-domain?
|
I am new to the topic of system identification and looking for a large Autoregressive (AR) model. Can anybody point out a large stable AR model which has more than 2 coefficients AND there should be a large number of zero coefficients?
This link presents an example of how to have nonzero coefficients in lag 1,4 for or... |
There are many algorithms that can calculate FFT. Even with Cooley–Tukey FFT algorithm, different radix can be used and the algorithms can divided into decimation in time and decimation in frequency. Any comment on how to choose these algorithms in practice?
|
For a given time series which is n timestamps in length, we can take Discrete Wavelet Transform (using 'Haar' wavelets), then we get (for an example, in Python) -
>>> import pywt
>>> ts = [2, 56, 3, 22, 3, 4, 56, 7, 8, 9, 44, 23, 1, 4, 6, 2]
>>> (ca, cd) = pywt.dwt(ts,'haar')
>>> ca
array([ 41.01219331, 17.67766953, ... |
I want to implement the equalizer in matlab. I am just learning this. I want a good kick start code that can help me to learn it further. I searched a lot on Google but do not find a good reference code to start. I have a received signal in matlab that is modulated with QAM-16 modulation and passed through AWGN Noise. ... |
I have rich experience signal-processing, but haven't touched image processing since my happy university days... so:
Working on a side project, I need to enhance ridges (continuous lines) in a 2D grey-scale image. Using Matlab, I'm at a point where Canny edge detection does a great job, but since many lines are thick, ... |
Hi I need to simulate a simple multipath channel in matlab through which I can send my OFDM transmission signal, I want to test my OFDM receiver design.
So far I have:
%% Passing through Channel
nIFFT = 4096;
% Create channel
channel = randn(1,nIFFT) + sqrt(-1)*randn(1,nIFFT);
% cext_data is the signal to be transmit... |
I try to resolve false edge problem in image segmentation. Let see its defination in Figure. The false edge problem often occurs in inhomogeneity image, especially for medical image. I am finding the method or feature to resolve it and achieve real edge. I try to apply some existing method example: localizing active co... |
I have a dataset that contains multiple channels recorded over time (think EEG or EMG), and I'm working on a computational model for this data. When I have a working version of the model, I'd like to compare the model's predictions to some held-out test recordings. I thought it would be nice use some sort of signal-to-... |
I'm trying to compute the impulse response for the following system:
$$
y(n) = \frac{1}{2} \left( x(n) + x(n-1) \right) + \frac{1}{2} y(n-1)
$$
and am told to assume that $y(-1)=0$.
My solution: Letting $x(n) = \delta(n)$, we have
$$
h(n) = \frac{1}{2}\left(\delta(n) + \delta(n-1)\right) + \frac{1}{2}h(n-1).
$$
Pluggin... |
I am looking at data like this:
Source data: http://pastebin.com/raw.php?i=L6cd8d5K
The data is quasi-periodic, there is a distinct cycle but it is not an exact repeat, and the period changes considerably. I would like to find accurate peak positions, and period durations, for each cycle. Ideally the peak positions ... |
Hi I am trying to get the image size of the uploaded image in MATLAB. So far I have got :
read=imread(image.png)
ymax=size(read) (1);
xmax=size(read) (2);
However this gives me an error. The image size is 300px by 256px, and I want my ymax and xmax to automatically get the pixel values. How do I do this?
|
I'm reading a material where it says that a filter mask or kernel can be separable if the matrix of the filter mask has a rank 1. The two slides which describes this are as below:
Reading these slides it seems to me that it's trying to mean that the averaging filter can be separable, while Laplacian of Gaussian(LoG) i... |
For fun, I computed the FFT of a pure sine wave. I chose chose the sample length to be an even multiple of the signal period, so that I don't see windowing-effects. Here is the Matlab code that I used:
% Signal properties
f_signal = 1000;
% Sampling properties
f_sample = 4000;
T_total = 100;
% Calculate signal vector... |
Morse code dots and dashes are often displayed as a sound, or light that is on for a short or long period of time.
What if the only way to communicate was by knocking.... (or similar encoding) that can only encode using extended (or short) durations of silence.
Is it acceptable to use morse code in this way (where shor... |
I have one problem that need you help. I am try to find the relationship between active contour and thickness information. For defination of thickness we can find at thickness measuring and active contour at chan-vese model. Could you sugess me method or idea to find the thickness of active contour (is called phi) as s... |
I mean some kind of system may dislike some special frequencies and there may be absorption lines.
Can somebody give some example?
You can lots of emission lines below. But is it possible the PSD is just a continuum with several absorption lines?
|
I am trying to match images from a large dataset which exactly match the given input image.(images with deformations/transformations are treated as different)
I have tried euclidean distance but it isn't very scalable. I have also tried matching gradient magnitude and orientation pixel by pixel, but again it seems to w... |
I'm trying to work my way through a paper I found online, titled "Three Models of Wind-Gust Disturbances for the Analysis of Antenna Pointing Accuracy" by W. Gawronski, 2002.
http://ipnpr.jpl.nasa.gov/progress_report/42-149/149A.pdf
In the Appendix of the paper, Section I, the author outlines an approach to generate a... |
HI I have these specification for an OFDM program I was wondering, what is the bandwidth and the sampling frequency? I'm not a student of Digital signal processing, hence I am so confused.
ymax=100;
nIFFT = 2048;
nCyclic = nIFFT/4;
pilot_distance = 16;
pilot_amplitude = 2;
offset = nIFFT*3;
% total number of complex sa... |
I am experimenting with image down-sampling and would like to calculate a numerical magnitude for alias-induced moiré patterns. Is it possible to do this by analyzing the frequency-domain (FFT) of the input image and knowing the relative sampling rate?
Assume that I have already applied any pre-sample filtering prior ... |
I wrote matlab code for face detection.In my code it is detecting face for first 100 frames and it crop faces from each frame and saves it in database folder.Problems iam facing
1.Detecting face frame by frame is very slow.Is there any idea to run faster since i have to work on 4000 frames.
2.In my database folder it h... |
I have been working frequency offset estimation in OFDM. The objective was to compare different frequency offset estimation techniques. By using MATLAB, I have simulated three different estimation techniques, namely:
By using Pilot tones
Using phase difference between two repetitive symbols (proposed by Moose)
and by... |
Looking for a solution to the following problem:
A signal $x(t)$ is band limited to $B$ Hz, and sampled above the
Nyquist rate, with corresponding $f_s = 1/T$. If the sampled signal is
given by
$$ y(n) = x(nT), $$
describe how to compute the phase-shifted sampled signal
$$ z(n) = x(nT + T/2), $$
from the samples $... |
I want to make the same thing programmatically like Color balance in Photoshop , like in below image
if we have same bar positions in Photoshop then how we can make them in OpenCV , because the problem which I am not understanding is that we have the image with RGB format yes we can convert in other color format but h... |
I study image processing and I am new to it. so my question is for example what is the impulse response for:
$$ y(m,n) = 3\times x(m,n)+9 $$
$$ y(m,n) = m^2n^2 \times x(m,n) $$
where the $y(m,n)$ is output and $x(m,n)$ is input.
thanks.
|
In steepest descent
methods of minimizing a function $f(x), x \in \mathbb{R}^d$,
it's common to approximate the gradient by finite differences:
$\qquad\qquad \nabla f(x) \approx gradest( x; h ) \equiv
{ {f( x + h I ) \ - \ f(x)} \over h } $
then minimize along those directions:
$\qquad\qquad x_{k+1} \ \text{from min}... |
I'm looking for an introductory book to time-frequency analysis. The book should be practical in nature and not mathematics heavy. Suggestions?
|
I want to design FIR low-pass filter with the following specifications:
Cut-off frequency: 200 Hz
Order: 20
Sampling frequency: 1000 Hz
what should be the stepwise method to do so
|
I'm preparing a digital signal/image processing introductory course and, besides the theory and practices I want the students to read and discuss a couple of research papers during the last one or two classes. It doesn't matter if the papers are new I just want to expose the students some first hand research material i... |
From this previous post, the real and imaginary parts of the Fourier transform of a zero mean Gaussian are uncorrelated (and i.i.d. Gaussians)
This some how seems counter-intuitive. It seems if the real part has a large intensity, then the imaginary part should be small. I read through the proof linked from the previou... |
I am trying to isolate (or segment to be precise) the vein pattern from Infra red image of a finger (using MATLAB) like shown below:
So my output will be a binary image like (not the exact dimension of image shown):
I tried histogram equalization to make the veins more visible, but it was not that successful. Any hel... |
I am having great time while reading "The Scientist and Engineer's Guide to Digital Signal Processing" book.
In "Chapter-14 Introduction to Filters" author indicates we can create high pass filter from low pass filters by multiplying low pass filter's frequency kernel with a sinusodial which has 0.5 frequency. Link to... |
I'm looking for a suitable measure in order to quantify the asymmetry of a signal. I've read this: Detect signals degree of imbalance and this: How to measure the agreement between to curves? but I can't see how they apply to my case.
So this is the part of the signal that I am interested in:
The red line shows the ori... |
I have a hard problem that need your help. I have a binary image that maintains some unwanted region (small white dot) and hole regions (in figure 1).My idea is that the first I will remove unwanted region by calculating area these region and then filter with small area value.At the second step, I fill in hole region t... |
I have an formula for this "Maximum Quantization Error" but i dont know what it is based in. Its just thrown in my study material without further explanation.
It is defined as:
$$Q = \dfrac {\Delta x}{2^{N+1}}$$
where $N$ is the number of bits used for quantization in a analog to digital conversion, and $\Delta x$ is, ... |
Consider a signal that can be expressed as a linear combinations of exponentials:
$x(n) = \sum_{k=1}^K c_k z_k^n$
I would like to estimate the poles $z_k$ and I was told that I could estimate them by calculating the SVD of the Hankel matrix of the observations $\mathbf{H}$:
$\mathbf{H} = \left(\begin{array}{cccc}x(1) &... |
I have written this function in matlab
function [A] = intmat(a,b,N)
M = length(a);
A = zeros(M,N);
for m = 1 : M
for n = 1 : N
my_func = @(t) (t^(N-n));
A(m,n) = quad(my_func,a(m),b(m));
end
end
end
Now when i use this function for a = [1 2 3 4 5] and b = [1 2 3 4 5] and N = 5
i.e is run the stat... |
Suppose we have a complex signal $\cos(2\theta) + j\sin(2\theta) = e^{j2\theta}$. Is there any way to find half-angle $\cos(\theta) + j\sin(\theta) = e^{j\theta}$ complex signal without going into polar form and preferably with no divisions? Iterative algorithms are fine.
|
This is a continuation of the discussion here. I would comment there, but I don't have 50 rep so I'm asking a new question.
Here's how I understand the DCT step in the MFCC calculation process: The rationale behind it is to separate the correlation in the log-spectral magnitudes (from the filterbank) due to the overlap... |
I need to do a perspective transformation on an image section from newspaper, here the girl's image. The section's coordinates are given as rough estimates. I need to find the boundary of the section and do a perspective transformation. I had been referring the following link.
http://opencv-code.com/tutorials/automati... |
Reconstructing a speech signal from a collection of MFCC vectors seems to work pretty well, but I've heard that one advantage of MFCCs is speaker-independence i.e. they are more-or-less the same across different speakers for a given phoneme. How then can a speech signal, with all its speaker-dependent idiosyncrasies (a... |
Say $\alpha$ is a complex random variable, then which one of the following expressions is correct?
$\mathbb{E}[\alpha^2]$ or
$\mathbb{E}[\alpha \alpha^*]$?
|
I've read that upsampling performed in digital music playback can color the sound, produce artifacts, etc. For example, an audio file ripped from a CD might be 44.1Khz/16-bit, and then upconverted to 48Khz/16-bit and played via an optical digital audio output. Audiophiles say this is bad because the signal needs to b... |
On Wikipedia I found the Hann-Poisson window, and the article claims the spectrum is smooth, but it isn't theoretically smooth, as it turns out. In practice you achieve partial smoothness by jacking up its $\alpha$ parameter.
Can I find what I'm looking for in a function with finite support? Is it mathematically possib... |
I have an imaging problem. I essentially have a metallic plate with a number of holes through it. I am looking at the number of holes with a thermal camera. While looking at the plate I have two phases of this analysis, 1.a source of hot fluid is flowing through the holes and behind the plate 2.a source of cold flui... |
I want to develop a procedure to remove some inpainted text from images, i.e. I have to estimate the inpainted pixels. I will do that with first an imputation step and then applying SVD (and perhaps later further improvements).
The imputations step just have to give an initial guess of the inpainted pixels. I thought o... |
I'm trying to use a cardinal sine as a lowpass filter for a cosine signal with a fundamental of 1k.
In frequency domain, what really happens is that I'm multiplying two impulses (centered at -1k and 1k) with a rectangular pulse of width equals 2 (convolution is multiplication in frecuency domain). The result would be ... |
I want to transmit data like radio stations do.
Like radio stations broadcast music and etc. using frequency, so I am also curious to know about it that actually how it works.
I also want to make such a device that will broadcast my data or voice in my apartment and if anybody will on that frequency they should hear my... |
If I have an image that is severely corrupted by Poisson noise, and I want to fit a function to the image, is it "better" to attempt to denoise the signal first before fitting, or should I move straight to the fitting stage?
In the example below, a 2D Gaussian function has been corrupted by Poisson noise. Should I fit ... |
I am currently working on a application which requires an inverse Fourier transform (IFFT) and am using a function library provided by Texas Instruments, in the datasheet they give an example on how to use one of their IFFT functions (shown below).
My question is: whilst I understand the need to perform bit reversal ei... |
I am new to signal processing and am currently doing research into the subject. I am learning about Orthogonal Frequency Division Multiplexing and have a question. Most definitions of OFDM mention its modulation scheme can be adapted to suit channel conditions, an example being changing to a more robust scheme if heavy... |
When considering the uncertainty of a signal which is determined by multiple inputs propagation of uncertainty states that for measurement $$ y = f(x), x=\{x_1, x_2,..., x_N\} $$ uncertainty in $y$ is $$u_y=\sum_i \frac{\partial f}{\partial x_i} u_{x_i} $$ My question is how do we get to this rule. I know that it can b... |
I am working on some waveform generation software and I am trying to figure out what the best type of filter would be to use a an Anti Aliasing filter for my algorithm.
I am generating my waves in a "Raw" mathematical way, meaning that i am creating a ramp for a saw wave and my square wave consists of pure 1's and 0's.... |
I am very new to DSP, so excuse my ignorance.
Using Audacity, I generated a sine wave of:
frequency 440Hz
amplitude: 0.8
duration: 1 minute
Now when i plot the spectrum for this sine wave, I get an image like this:
This is really surprising for me.
I was expecting a single surge at 440 Hz for the pure tone. But ... |
A very naive question... A signal with bandwidth of 20 MHz is modulated using a carrier of 1 GHz. What will be the sampling frequency?
I was asked this question during an interview. I answered 2 GHz but the interviewer said it will be 40 MHz. Can anyone explain it?
Thanks.
|
During the multi-camera tracking, there is a situation where one person moves from one camera's coverage area to another. In that case that person has to be re-identified(as the one from previous camera's previous view) in order to keep tracking the particular object. What is the easiest way to do this? Color matching?... |
I wish to low pass filter an image with a Gaussian kernel. However, I also wish to select a filter that has the property of producing images that have have no greater than N cycles/pixel. Let's say I wish N to be close to, or exactly .025.
By what method is $\sigma$ selected in order to obtain such an image?
|
I am a student of computer science (not the university but technical school).
I am interested in the world of DSP, and I saw that it is closely connected with mathematics. I noticed for example that a lot is based upon the Fourier I'm slowly trying to learn.
I also want to buy the book "Understanding Digital Signal Pr... |
I have multiples records of a motor sound, I would like to synchronize them first and then calculate their spectrogram. My question is how can I use the autocorrelation or the crosscorrelation to synchronize them? I want to make sure that the only difference I see in the spectrogram is related to the frequency, not t... |
How do you derive the theoretical symbol error rate as a function of $E_\mathrm{b}/N_0$ for 4QAM? I know that the result should be $Q\left(\sqrt{2E_\mathrm{b}/N_0}\right)$ but I am ĺooking for the derivation. Also, what are the symbol error rates vs $E_\mathrm{b}/N_0$ for 16QAM and 32QAM?
|
What options exist for discrete audio compression that is good quality, moderate compression (e.g. 3+:1), and low complexity (e.g. hundreds of processing cycles to encode each sample without the use of floating point), especially ones that are not patent-encumbered? The specific application is ambient sound - vocal and... |
I am developing an image processing algorithm / plugin for Fiji (ImageJ) that processes scanned microscope slide images (20x magnification) and extracts features from the slides.
The slides contain histological tumor sections that are stained immunohistochemically with an antibody that identifies nuclei positive with t... |
write an m-file that will take the"cameraman" and produce a image quality or difference matrix for spectral selection method.The image properties are a sfollowings:
For spectral selection:
image1:DC coefficiant only
Image 2:first A/2 coefficiant including DC,where is the number of coefficiants prior to the EOB symbol.
... |
Iam having 1 min video.I need to cut the video into 5 segments depending on changing background.Please suggest me good algorithm which can be easily implemented in matlab.Please provide me helpful links.
|
Inspired by the talk "You and Your Research" by Richard Hamming, I started wondering what are the important research topics on signal processing nowadays. Certainly an extensive list of topics would not be easy to find. I do not know the trending topics, for example, on Circuits and Systems, but I could imagine it for ... |
Is baseline wander in ecg is low frequecny noise in ecg and power line interference is high frequency noise in ecg? Is both the artifacts present in EMG signal?
|
I have a functioning DTMF program. It takes a larger signal and breaks it up into many small components, then analyzes each segment with an FFT to determine if the magnitude of the response for a particular "bin", corresponding to a specific frequency, is present, thereby indicating that the number which is respresente... |
I am new to signal processing, so sorry if the question is superbanal. I have been spending more days than I would admit on this and can't find the error.
I have two triangle waves that are emitted from loudspeakers and M sensor in a linear uniform array. I need to estimate the delays of the single wave in the single s... |
I'm currently collating images to try and develop a HAAR classifier using the OpenCV traincascade functionality. The objects I want to detect are small and numerous (bees), and I'm curious as to whether it would be better to train the image with lots of small cutouts of the bees as positive images, or to use bigger pos... |
I was looking at the filters, and the ones for 1st derivatives, gradient http://en.wikipedia.org/wiki/Savitzky%E2%80%93Golay_filter#Tables_of_selected_convolution_coefficients
by testing the 9-points one:
D=[-4;-3;-2;-1;0;1;2;3;4]/60;
y=sin((0:0.2:6)');
yd = conv(D,y);
plot([repmat(0,128,1) y yd(5:end-4)])
we see tha... |
I am trying to apply phase lock loop to calculate phase shift due to doppler effect and finally calculate the doppler frequency($\Delta f$). I am assuming that the received wave is of the form,
$r(t) =\cos(2\pi f0 + \phi) $
.The receiver in my setup is at rest and the source is moving at velocity of about 1m/s. But I a... |
I'm currently working on implementing an efficient method to segment an organ on 3D CT images.
I used an algorithm (SLIC) to generate superpixels on each slice of my CT 3D matrix. The process is similar to the k-means algorithm although we do not need to visit the entire image for each pixel.
Then I build a graph base... |
I'm trying to fuse different images of the same scene which each image have a different focus. I've been told that first I have to perform an image registration to the images.
Right now, the result from the registration has errors, which can be seen by "aura" around the objects in the images and shrinking the image edg... |
Can someone explain me how are the different frequency bands useful for detecting bearing faults using resonance demodulation?
|
I would like to create a Band Limited Table Lookup Oscillator that functions much like the sin() function in C++ works where i would inout a phase value and receive a sample value. for example Sample s = saw(x); or Sample s = square(x);.
To fill the table I would first generate an oversampled table by a factor of "X" ... |
i have a legacy processed audio wav file. Another UN-processed copy of the source is processed by my algorithm. From both processsing blocks i get processed wav files as output. Now i want to do null tests, because i read (will soon quote the reference) null tests are suitable for objective loudness comparision. So mer... |
Suppose that we have the following model
$y(t) = A_1\sin(\omega_1 t+\phi_1) + A_2\sin(\omega_2 t+\phi_2) + ... + A_p\sin(\omega_p t+\phi_p) + z(t)$
My question is not related to how to determine the number of components, but I am interested in the maximum. For example, let us assume that we have sampled this model and ... |
We have measured the human blood pressure with the sphygmomanometer connected to relative senzor of the pressure and osciloscope. We measured the offset of the sensor as $U_{OFF}=1.01\ V$ and the sensitivity $k=0.02425\ \frac{V}{mmHg}$.
By measuring the pressure on the human's arm, we got this image:
How to find syst... |
I have a doubt regarding multi track/multi layer recording of audio signals. in recording studio each instrument or chorus,playback will use a independent layer/track..so after recording a all tracks ..how do they mix all of those into a single track ..any mixing scheme?..or it is the simple time division multiplexing?... |
In ofdm systems after applying IDFT we take the last N/x samples and place them before these N samples. This is called cyclic prefix(CP).So why to use a cyclic prefix?
Why is the CP known to combat the inter symbol interference.Why can't we use some junk data or zeros over there? Can't this junk data combat the ISI ?.... |
Just wondering what the opening operator is in image processing? What does it do? Just deletes bits of the image that you don't want?
|
How do I calculate the maximum number of harmonics a complex wave can have based on the sample rate?
Say I Have a 20hz fundamental and a sampling rate of 44100 hz. My instinct is to take 44100/2 = 22050(nyquist) and the take the fundamental and multiply by 2 while the frequency is less than nyquist and the count how ma... |
I had an exam one of these days and one of the questions was:
"Knowing that an auto-correlation estimator of a sinal x[n] could be defined by:
$$
R_{xx}[k] = \sum_{n=-\infty}^{+\infty}h[n].x[n+k] , k=0,1,...,n-1
$$
and that the non-periodic convolution:
$$
y[n]=x[n]*h[n] = \sum_{k=-\infty}^{+\infty}h[k].x[n-k]
$$
show ... |
I'm using Filter Banks (Narrow Band Pass) created using the functions in Matlab. However, I wanted to know if there are fundamental limitations like that of FFT which also affect the Filter Banks. Is there any co-relation between the two?
Basically, I don't know if they share the same problem of time and frequency bei... |
Actually I am using DSP kit TMS320C6711 through which I want to remove 50Hz component out of the signal. I am unable to interface Code Composer studio (v2) with matlab. Therefore, I have designed FIR notch filter using Code composer Studio in which coefficients are taken from fdatool of matlab. Kaiser window has been u... |
I am trying to calculate the mfcc of an audio sample of 5sec duration. How can I frame this audio sample. Is there any criterion for selecting the frame size and number of frames? What all change will be there if the audio file is 30sec long?
|
I have created a fairly simple TDOA system that uses ultrasonic signals emitted from two speakers to geolocate (relative to the speakers) mobile phones. The two signals are separated by frequency.
The system has the following constraints:
The signals must be inaudible. To that end we stick to frequencies above 17 kH... |
I am looking for a great introduction to FFTs for my job. I studied math, but never heard of FFT until I got this job. There is not a lot of documentation at my place of work and the articles I have found online have been somewhat confusing, even the wikipedia entry.
So I am looking for a recomendation for a higher lev... |
Is there any difference in energy content of baseband and bandpass signals? When we see their representation in frequency domain, it looks like a bandpass signal has double the energy content compared to basband. But my friend says there's no difference. Someone please clarify.
|
I am trying to work out this problem:
Assume that we are transmitting data from a dictionary of 15 symbols. Let the
probability of sending one symbol be the same as that of sending any other
symbol. Calculate how often we need to fetch a symbol to transmit information at
a rate of 5 bits/s.
How can this be found?
|
How exactly is beat division applied to a signal?
Does the rhythm need to be detected or can just the onset be manipulated?
For rhythm detection is it better to look for patterns in the frequency domain or time domain for accuracy?
|
Assuming that a computer is interfaced with a device that has 210 characters and
that each character is transmitted using binary words what is the minimum
number of bits needed to represent each character? To find the minimum is there any specific formula ?
|
I am reading "Small Unmanned Aircraft: Theory and Practice" (page 7). We have the following Transfer Function (TF):
$\phi(s)=\frac{a_{\phi 2}}{s(s+a_{\phi 1})}(\delta_a(s)+\frac{1}{a_{\phi 2}}d_{\phi 2}) $
where $\delta_a$ is the output signal to the actuator and $d_{\phi 2}(s)$ is an unwanted disturbance.
Initially,... |
What's the best way to incorporate polynomials or sinusoidal equations into a linear model to predict a future amplitude in this sort of data? You can see that if those polynomials continued to go on, they wouldnt be anywhere close to fitting the final location. Im trying to use the greeen shaded area to predict the no... |
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