Hottest Questions This Month

3

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4

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1k

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What does the term “railed” mean in signal processing?

signal-analysis

answered Jun 4 at 4:00 stevegt 121

2

votes

2

answers

712

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Career in signal processing

modified Jun 19 at 14:02 Peter Mortensen 147

4

votes

4

answers

558

views

Is the first derivative operation on a signal a causal system?

linear-systems causality

answered May 31 at 15:24 Laurent Duval 17.3k

3

votes

3

answers

294

views

Does it make sense to use a wavelet that is equal to a sine of one period?

fft wavelet stft time-frequency

answered Jun 10 at 23:02 hotpaw2 26.3k

1

vote

3

answers

162

views

integration property of fourier series

transform fourier-series integration

modified Jun 17 at 11:40 Matt L. 52.2k

0

votes

3

answers

90

views

Given a filter (coefficients) how can I make it minimum phase?

filters filter-design

modified Jun 19 at 16:22 Matt L. 52.2k

1

vote

1

answer

129

views

Cross Correlation, how can any signals except the trivial cases be uncorrelated?

power-spectral-density correlation

modified May 30 at 15:25 Dilip Sarwate 13.8k

1

vote

1

answer

88

views

Why resampling change this FFT output?

fft python

modified May 28 at 22:08 Scoodood C 28

3

votes

2

answers

82

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Getting the bitstream of an unknown RF signal

modulation demodulation channelcoding sdr

answered Jun 5 at 15:27 rjan87 121

1

vote

3

answers

67

views

Why is the high-pass filter result in a discrete wavelet transform (DWT) downsampled?

wavelet nyquist dwt

answered Jun 20 at 19:26 David 2,090

2

votes

1

answer

132

views

Comparing arithmetic complexity of FFT radix-2 and convolution

discrete-signals dft convolution

modified Jun 9 at 20:12 Fat32 16.1k

1

vote

2

answers

45

views

Can a 1-dimensional signal be in a domain other than the time or frequency domain?

signal-analysis frequency-domain time-domain

modified Jun 12 at 23:05 Laurent Duval 17.3k

2

votes

2

answers

97

views

Why is the Fourier (or cosine) transform decorrelating?

dft autocorrelation dct

answered Jun 11 at 12:54 Stanley Pawlukiewicz 6,940

2

votes

2

answers

56

views

Phase response of $H(f)=e^{-j2{\pi}ft_0}$

fourier-transform phase frequency-response magnitude

answered Jun 12 at 12:43 Matt L. 52.2k

0

votes

1

answer

52

views

Does $y[n] = x[n] \star (u[n]-u[n-2])$ have memory or is it memoryless?

discrete-signals system-identification

modified Jun 18 at 19:21 robert bristow-johnson 11.7k

1

vote

4

answers

64

views

Apply Principal Component Analysis for RGB Images

image-processing machine-learning pca

modified Jun 8 at 14:57 Royi 7,598

2

votes

1

answer

45

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Missing delay in heavyside step function

discrete-signals z-transform transfer-function impulse-response

answered Jun 6 at 15:52 Dilip Sarwate 13.8k

2

votes

1

answer

91

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Principal Component Analysis definition

transform pca

modified Jun 15 at 14:14 serafeim 126

2

votes

2

answers

54

views

In the Sampling Theorem, why are the image frequencies at n*fc not a problem?

filters sampling nyquist

modified May 29 at 4:47 Curt J. Sampson 121

1

vote

1

answer

41

views

Can CV or DS be seriously considered DSP roles? [closed]

computer-vision digital-filters machine-learning

modified Jun 2 at 20:10 Stanley Pawlukiewicz 6,940

0

votes

2

answers

41

views

Why not use a complex number in the exponent in the z-transform?

z-transform laplace-transform polar

modified Jun 17 at 8:22 Hilmar 10.9k

2

votes

1

answer

52

views

What is the proper way to filter out unwanted noise from accelerometers?

fft filter-design ifft window

modified May 27 at 18:14 Peter K.♦ 17.3k

0

votes

1

answer

61

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Communication between two USRP : mismatched spectra between transmission and reception

gnuradio

modified May 30 at 9:54 Dylan 15

0

votes

1

answer

61

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Pre-calculation of Geortzel coefficient

frequency-spectrum

modified Jun 6 at 15:04 Noone 3

0

votes

1

answer

43

views

Signals Cross Correlation from Their Power Spectral Densities?

power-spectral-density cross-correlation correlation

modified Jun 3 at 11:16 StephenJ 43

1

vote

1

answer

55

views

Bandwidth of a finite impulse response filter

convolution bandpass bandwidth

answered Jun 3 at 16:22 Marcus Müller 12.7k

1

vote

1

answer

52

views

Method for determining probe angle by analyzing skewed sine wave

fft dtft

modified Jun 16 at 10:02 Olli Niemitalo 9,131

0

votes

3

answers

51

views

fft and inverse fft error size and applying impulse response matlab

matlab fft ifft

answered Jun 17 at 21:53 Laurent Duval 17.3k

0

votes

1

answer

51

views

What is the minimum sampling rate for QPSK or what is the bandwidth of QPSK signal?

digital-communications demodulation qpsk

answered Jun 20 at 6:40 robert bristow-johnson 11.7k

0

votes

2

answers

39

views

Image Brightness on 2D Fourier Transformation

image-processing fourier-transform

modified 1 hour ago Royi 7,598

0

votes

4

answers

39

views

Alternatives to Spectrogram [on hold]

audio python spectrogram audio-processing

modified Jun 19 at 16:18 Laurent Duval 17.3k

2

votes

1

answer

50

views

What are the cosine functions in JPEG's DCTII table?

dct image-compression jpeg cosine

modified Jun 6 at 20:24 Laurent Duval 17.3k

2

votes

2

answers

64

views

DFT: a function of $n$?

discrete-signals sampling fourier

modified Jun 1 at 9:46 Marcus Müller 12.7k

1

vote

1

answer

64

views

Finding where signal is showing some (unknown) periodicity

signal-analysis spectrogram

modified Jun 4 at 20:11 robert bristow-johnson 11.7k

0

votes

1

answer

82

views

Amplitude demodulation of sinusidal signal in matlab

image-processing matlab discrete-signals lowpass-filter demodulation

modified Jun 17 at 13:47 DaDSPGuy 132

0

votes

1

answer

81

views

Analyze and reproduce sonic screwdriver sound

signal-synthesis

modified Jun 20 at 12:23 BADWOLF 8

0

votes

2

answers

62

views

Convolution property

discrete-signals signal-analysis convolution array-signal-processing

modified Jun 6 at 14:14 Laurent Duval 17.3k

1

vote

1

answer

37

views

fftshift in MATLAB with even number of data points in double sided spectrum

discrete-signals fourier-transform frequency-spectrum fourier-series

answered Jun 4 at 2:03 robert bristow-johnson 11.7k

1

vote

1

answer

61

views

Power Spectrum Estimation of three sinusoids in white noise

power-spectral-density random-process spectrum-estimation

modified Jun 1 at 22:48 Fat32 16.1k

-1

votes

1

answer

28

views

spectrum for a baseband communication signal

digital-communications

answered Jun 4 at 14:31 MBaz 9,180

-1

votes

2

answers

57

views

Why is the fft magnitude spectra of sine not symmetric?

fft digital symmetry

modified Jun 21 at 3:54 hops 1,054

1

vote

1

answer

43

views

Does there exist a simple regression method to fit a single sinusoid period to a data set?

estimation parameter-estimation

answered Jun 8 at 8:51 Sebastian Reichelt 374

0

votes

1

answer

42

views

SNR contains $\log N$ term where $N$ stands for number of samples

signal-analysis signal-power signal-energy independence

modified Jun 18 at 20:48 Laurent Duval 17.3k

1

vote

1

answer

52

views

FIR filter not eliminating out of band noise?

filters fir highpass-filter

modified May 27 at 2:30 Fat32 16.1k

0

votes

1

answer

51

views

Real signal from I,Q, sample rate and center frequency

discrete-signals sampling radar

modified Jun 19 at 11:03 Lars Ericson 103

0

votes

1

answer

39

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Baseband representation of a LFM chirp signal

radar baseband

modified Jun 13 at 5:40 robert bristow-johnson 11.7k

1

vote

1

answer

50

views

Discrete Kalman filter for a continuous system

discrete-signals continuous-signals kalman-filters

modified yesterday Fat32 16.1k

1

vote

2

answers

38

views

Definition of difference between compression and filtering

image-processing filters computer-vision image-compression

modified Jun 18 at 10:17 Florian 443

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