Hottest Questions Today

0

votes

1

answer

20

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image resolution in smartphones and laptop

image-processing

modified 6 hours ago Fat32 20.1k

0

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0

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16

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Relationship between wavelet shape and filter points

asked 9 hours ago M. Farooq 210

3

votes

1

answer

70

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LTI, causal, discrete time system output

discrete-signals convolution linear-systems

modified 9 hours ago Fat32 20.1k

14

votes

7

answers

2k

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Fourier transform is an isomorphism…but we don’t get when each frequency appears?

fourier-transform

modified yesterday hotpaw2 29.4k

0

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1

answer

25

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Auto-correlation of C/A code with 30dB noise

noise autocorrelation

modified 13 hours ago Dan Boschen 12.2k

0

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2

answers

27

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noise cross-correlation

modified 13 hours ago Dan Boschen 12.2k

4

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1

answer

80

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Intuition behind image derivative using Fourier Transform for edges detection

image-processing fourier-transform edge-detection derivative

modified yesterday Dan Boschen 12.2k

0

votes

0

answers

29

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FFT of white noise yieds double white noise

fft downsampling overlap-add

asked yesterday SpaceMonkey 1

2

votes

3

answers

31

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image compression versus image denoising

image-processing denoising compression

modified 15 hours ago Laurent Duval 19.9k

0

votes

1

answer

19

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Wavelets: Reconstruction Filters for 2 Level Decomposition

filters wavelet filter-bank

answered 19 hours ago Dr. Lutz Lehmann 902

0

votes

1

answer

22

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SNR estimation prior to demodulation?

discrete-signals digital-communications noise snr

modified yesterday Dan Boschen 12.2k

6

votes

7

answers

2k

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Why is there no FPU on (most) DSP chips?

fixed-point floating-point

modified 2 days ago supercat 101

3

votes

3

answers

229

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Finding the time domain equation corresponding to a given DFT

dft self-study

modified yesterday Cedron Dawg 4,285

2

votes

2

answers

32

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What is the right way to downsample using Fourier method?

fourier-transform nyquist downsampling aliasing decimation

modified yesterday hotpaw2 29.4k

0

votes

3

answers

53

views

Is there any algorithm to decompose a wave into a set of given frequencies?

signal-analysis

answered yesterday Cedron Dawg 4,285

2

votes

3

answers

236

views

Would capturing an image at 640x480 then resizing it to 1280x720 improve the ability to detect/resolve objects in the image?

image-processing

answered yesterday ShoutOutAndCalculate 113

0

votes

1

answer

36

views

Scientific names to piano key numbers

conversion

modified yesterday Cedron Dawg 4,285

0

votes

1

answer

16

views

Adding Poisson noise to a time series signal

noise snr measurement

modified 11 hours ago pproctor 13

0

votes

0

answers

18

views

how do I generate Huffman code using Matlab

matlab

asked yesterday oddytony 1

0

votes

1

answer

43

views

When is a discrete time transfer function unrealizable?

filters discrete-signals continuous-signals transfer-function causality

modified 2 days ago TimWescott 758

3

votes

3

answers

63

views

Frequency warping when integrators are replaced with backward-euler and forward-euler integration

control discretization

modified 2 days ago Dan Boschen 12.2k

2

votes

1

answer

28

views

How many bps would be required to reproduce the words in speech recognizably?

digital-communications speech

modified 2 days ago Stanley Pawlukiewicz 8,058

2

votes

1

answer

90

views

Do you really have to always satisfy Nyquist with all signals if your purpose is to reconstruct a signal?

frequency-spectrum nyquist

modified Dec 12 at 18:40 Peter K.♦ 17.8k

0

votes

2

answers

31

views

Phase of the chirp signal

linear-chirp

answered Dec 13 at 3:53 Dan Boschen 12.2k

2

votes

2

answers

14

views

Is it possible to calculate/estimate the storage space a certain duration of .mp4 video files will take up?

video-processing video-compression

answered 2 days ago Fat32 20.1k

0

votes

1

answer

47

views

How to determine sampling frequency for an x(t) signal avoiding aliasing?

signal-analysis fourier-transform sampling nyquist

modified 2 days ago Dan Boschen 12.2k

2

votes

2

answers

38

views

Image resizing and interpolation

image-processing matlab

modified 2 days ago Fat32 20.1k

-1

votes

0

answers

15

views

How to count objects moving on a conveyor?

image-processing computer-vision video-processing c# visual-tracking

modified 2 days ago Roshan 1

0

votes

1

answer

18

views

Autocorrelation Computation with MATLAB

matlab discrete-signals signal-analysis autocorrelation cross-correlation

modified yesterday Dan Boschen 12.2k

2

votes

1

answer

35

views

DPSK vs PSK Error Probability

demodulation bpsk

modified Dec 13 at 2:09 Dilip Sarwate 14.9k

-1

votes

0

answers

12

views

Which one is a better method for contour detection? image processing or deep learning?

image-processing python deep-learning

modified 2 days ago beyblade41 9

2

votes

1

answer

30

views

SDR spectrum anomalies

power-spectral-density sdr radio

modified 2 days ago hotpaw2 29.4k

7

votes

2

answers

106

views

Do $|s(t)|$ and $|S(f)|$ uniquely determine $s(t)$?

fourier-transform convolution

modified Dec 12 at 7:41 Matt L. 56.7k

0

votes

0

answers

13

views

Help understand the results of hough transform

edge-detection hough-transform

asked 2 days ago E_K 101

0

votes

0

answers

15

views

$\frac\pi4$-DQPSK receiver query

digital-communications digital

modified 2 days ago Marcus Müller 14k

3

votes

0

answers

28

views

Block CMA algorithm

discrete-signals digital-communications equalization

asked Dec 12 at 22:33 FourierFlux 317

0

votes

1

answer

28

views

Wireless communications outage

digital-communications information-theory

modified Dec 12 at 15:01 Engineer 707

0

votes

0

answers

12

views

Smooth Cross-Fading

algorithms smoothing fading-channel

asked 2 days ago ChaoticPolynomial 1

2

votes

2

answers

47

views

Pulse Doppler Radar: time delay in down conversion

discrete-signals continuous-signals signal-detection radar

answered Dec 11 at 23:50 Envidia 385

0

votes

1

answer

24

views

ROC of Z Transform of $x(n) = 2(3)^nu(-n)$

z-transform

answered Dec 12 at 16:02 Engineer 707

0

votes

0

answers

20

views

why if I want to create a rayleigh fading channel with $E[|H_{i,j}|^2]$,I should multiply $\sqrt{\frac{1}{N_R \times N_T}}$?

digital-communications fading-channel

modified 2 days ago care we 1

0

votes

0

answers

14

views

Harmonic spectrum using MATLAB and calculate THD [closed]

matlab fft thd

modified 2 days ago Yacine Bouali 1

1

vote

1

answer

99

views

is y[n] = x[n] + n time invariant?

filters linear-systems

answered Dec 10 at 20:04 Fat32 20.1k

0

votes

1

answer

19

views

Example of Entropy and Channel Capacity Computation

digital-communications random-process information-theory capacity

answered Dec 12 at 9:31 Matt L. 56.7k

2

votes

1

answer

22

views

Fourier antitransform using scaling property?

fourier-transform

answered Dec 12 at 6:15 Matt L. 56.7k

2

votes

2

answers

26

views

Invertibility of Time-Dependent Fourier Transform

fourier-transform stft dtft

answered Dec 12 at 1:34 TimWescott 758

5

votes

0

answers

17

views

Minimum statistics noise estimate - how to calculate the underestimation factor?

signal-analysis fourier-transform noise noise-cancellation

modified Dec 12 at 9:05 Danijel 413

2

votes

1

answer

95

views

DSSS spread method

spread-spectrum

modified Dec 12 at 4:57 Community♦ 1

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