Signal Processing Stack Exchange

3

votes

1

answer

95

views

Example of non-equivalence of the two PSD definitions

modified 3 hours ago Dilip Sarwate 13.1k

0

votes

1

answer

61

views

Linear Combination of Two Signals

discrete-signals

modified 4 hours ago Community♦ 1

0

votes

0

answers

8

views

Method(s) to extract text from different sections of a invoice

image-processing image-segmentation text-recognition

asked 4 hours ago Harry Yang 1

1

vote

2

answers

44

views

How to find a variance of sample sequence

signal-analysis autocorrelation random-process stationary

modified 5 hours ago ViniLL 6

0

votes

1

answer

41

views

Determining parameters of S-function

image-processing

modified 6 hours ago Community♦ 1

0

votes

0

answers

19

views

OFDM modulator: Transmission time calculation

fft homework ofdm

modified 8 hours ago Marcus Müller 12k

0

votes

0

answers

9

views

How to detect the spreading code in MATLAB

matlab

asked 11 hours ago Gze 17

1

vote

1

answer

142

views

What is an “innovation filter”?

filters power-spectral-density fir stochastic

modified 19 hours ago Matt L. 50.6k

0

votes

0

answers

29

views

When we compute doppler FFT, how can we find values corresponding to negative frequency?

fft doppler

asked 20 hours ago Sinecosine 1

1

vote

1

answer

33

views

What does the phase discriminator portion of the Costas Receiver do mathematically?

modulation demodulation

modified yesterday Eric Carlsen 321

29

votes

5

answers

2k

views

Detecting Trail in Forest Images

image-processing computer-vision

modified yesterday Glorfindel 209

2

votes

3

answers

552

views

Convolution that results in an all-zero sequence

convolution

modified yesterday Dilip Sarwate 13.1k

0

votes

0

answers

36

views

Time-frequency and time-amplitude audio analysis - Python

python algorithms time-frequency time-domain

modified yesterday Hassan Pezeshk 1

0

votes

0

answers

12

views

problem in selecting correct algorithm for project (RCNN)

image-processing python deep-learning

asked yesterday maimoona 1

0

votes

2

answers

57

views

About using Walsh matrix as spreading sequence

digital-communications autocorrelation spread-spectrum

modified yesterday BlackMath 359

-1

votes

0

answers

10

views

HMM Model HTK TOOL KIT [on hold]

speech-processing speech-recognition speech hmm

modified 2 days ago jojek♦ 8,629

0

votes

0

answers

40

views

How should I modify my filter coefficients for the filter to be unaltered, when I change my sample rate

filters filter-design fir resampling multirate

asked 2 days ago Aditya TB 10

0

votes

1

answer

40

views

Calculating filter coefficients of a Moving average with error correction

filters fir moving-average adc

modified 2 days ago sundar 93

0

votes

0

answers

25

views

QPSK demodulation problem due to apparent transmitter clock frequency drift

qpsk synchronization

asked 2 days ago Dino 1

0

votes

0

answers

27

views

Separating Ultrasonic signal from echo at the receiver

signal-analysis audio frequency-spectrum

asked 2 days ago charlizard 1

0

votes

0

answers

16

views

How to implement hermitian symmetry before ifft in matlab?

digital-communications kalman-filters ofdm ifft dsp-core

asked 2 days ago abdullah alzubydea 1

1

vote

2

answers

51

views

Spatial Audio (Ambisonic) and calculating sound source position

audio

modified 2 days ago okarpov 106

0

votes

2

answers

44

views

Why Coherence is not a valid metric when performing impact excitation?

signal-analysis fourier-transform coherence

answered 2 days ago Konstantin Beliaev 1

0

votes

1

answer

48

views

Spectrum Inversion Problem

frequency-spectrum spectrum-estimation

modified 2 days ago Suresh 140

0

votes

2

answers

70

views

why is my FFT magnitude of real time recording so volatile?

fft signal-analysis frequency-spectrum

modified Feb 14 at 22:01 Community♦ 1

1

vote

0

answers

30

views

Moving average and linearization of two piecewise linear systems

filters linear-systems moving-average adc

asked Feb 14 at 20:22 sundar 93

0

votes

1

answer

1k

views

Generate the Matrix Form of 2D Convolution Kernel

image-processing convolution

modified Feb 14 at 20:01 Community♦ 1

1

vote

0

answers

23

views

Recovering signal statistics from non-uniform sampled signal

estimation nonuniform

asked Feb 14 at 18:58 hhquark 6

0

votes

3

answers

34

views

split radix ifft/fft algorithm

ifft

answered Feb 14 at 18:51 a1s2d3f4 101

-1

votes

0

answers

21

views

Physical meaning of cross spectral matrix in a microphone array

power-spectral-density cross-correlation beamforming

modified Feb 14 at 17:10 Stanley Pawlukiewicz 6,256

0

votes

0

answers

31

views

How do I play and record audio at the same time?

matlab audio impulse-response

asked Feb 14 at 16:27 Mistergrave 1

1

vote

4

answers

100

views

Detecting moved and dirty areas between two snapshots/images

image-processing motion-detection

answered Feb 14 at 16:08 EngrStudent 103

0

votes

1

answer

22

views

GCC-PHAT (Generalized cross correlation) always peak at delay=0 on real audio signal

fft discrete-signals convolution cross-correlation delay

answered Feb 14 at 15:53 Stanley Pawlukiewicz 6,256

0

votes

0

answers

8

views

Trellis-converging offset and the min-sum algorithm

forward-error-correction viterbi-algorithm

asked Feb 14 at 15:09 Josu Etxezarreta Martinez 183

0

votes

0

answers

12

views

Calculating the Mean Square Error (MSE) in Wavelet Denoising

image-processing wavelet denoising

asked Feb 14 at 11:37 Chris S. 1

0

votes

1

answer

14

views

Confusion regarding lacunarity of koch curves with same fractal dimension but different orders

image-processing self-study

modified Feb 14 at 11:29 jojek♦ 8,629

1

vote

0

answers

13

views

Interpolating inertial sensors data to correct for packet loss

signal-analysis interpolation sensor

asked Feb 14 at 11:16 Clare 6

0

votes

1

answer

31

views

Error reading a .PCM file

matlab audio pcm

modified Feb 14 at 10:17 Community♦ 1

0

votes

1

answer

22

views

How do I find the frequency of a particular bin in a cosine transform, and two other questions

frequency filtering dct cosine

modified Feb 14 at 9:28 Laurent Duval 16.5k

1

vote

1

answer

26

views

Checking Parseval's Theorm for Gaussian signal by using Scipy

fft scipy parseval

modified Feb 14 at 6:23 SleuthEye 1,651

2

votes

0

answers

20

views

What is a correct way to find or “guess” a kernel which transforms an image into another image using Fourier Transformations?

fourier-transform

modified Feb 13 at 21:58 huseyin tugrul buyukisik 111

0

votes

0

answers

22

views

Is there a way to find a picture inside another picture, using only 2D Fourier Transforms of both images?

image-processing fourier-transform

asked Feb 13 at 16:49 huseyin tugrul buyukisik 111

0

votes

0

answers

12

views

Problem with Spectral Correlation Function for cyclical signal analisis

discrete-signals signal-analysis bpsk

asked Feb 13 at 16:18 DaDSPGuy 1

0

votes

0

answers

62

views

Recover Audio from Spectrogram Image

image spectrogram reconstruction neural-network audio-processing

modified Feb 13 at 16:17 Krish 1

0

votes

0

answers

31

views

Some difficult-to-approximate signals to test an signal extracting algorithm

denoising approximation

modified Feb 13 at 15:24 Ramiro Scorolli 118

1

vote

1

answer

28

views

Best way to resample an OFDM signal without interpolating + filtering?

fft ifft resampling sdr usrp

modified Feb 13 at 15:01 Community♦ 1

0

votes

1

answer

30

views

Computing the gains of a piecewise affine system

non-linear

answered Feb 13 at 12:07 Rodrigo de Azevedo 617

0

votes

2

answers

19

views

Camera Calibration - why do you have to move the calibration board?

image-processing camera camera-calibration camera-pose

answered Feb 13 at 11:13 Jakob 31

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