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1

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153

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What is a Kravchuk transform and how is it related to Fourier transforms?

transform

modified 14 hours ago Laurent Duval 17.7k

0

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1

answer

29

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modified 10 hours ago MBaz 9,275

0

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2

answers

41

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complex

modified 15 hours ago Cedron Dawg 3,765

0

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2

answers

26

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noise bandpass

answered 4 hours ago Dilip Sarwate 14.2k

0

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0

answers

24

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random-process covariance proof stationary

modified 15 hours ago Marcus Müller 12.8k

0

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1

answer

45

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fft dft

modified 13 hours ago Dale S 21

0

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1

answer

20

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How to sketch this multirate system spectrum?

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modified 15 hours ago karagedon 1

0

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1

answer

11

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image-processing computer-vision image opencv classification

answered 21 hours ago Marcus Müller 12.8k

0

votes

2

answers

34

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Relation between $X(f)$ and $S_x(f)$

fourier-transform power-spectral-density autocorrelation

modified yesterday Dilip Sarwate 14.2k

0

votes

1

answer

20

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Graph Fourier transform: the adjoint notation for the eigenbasis matrix

signal-analysis fourier-transform linear-algebra

answered yesterday Cedron Dawg 3,765

0

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1

answer

24

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High resolution spectrograms

matlab audio python spectrogram

modified yesterday hotpaw2 26.4k

0

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0

answers

17

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Wignerville of market data

time-frequency time-series

modified yesterday Ivan 101

0

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1

answer

47

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Practical question about DFT in Matlab

dft correlation matched-filter

modified yesterday Machupicchu 46

0

votes

0

answers

26

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How to use a size N complex DFT to compute a size N/2 real DCT? [on hold]

dft dct

asked yesterday Machupicchu 46

0

votes

2

answers

31

views

Advantages of an orthogonal filterbank

audio filter-bank

modified yesterday Laurent Duval 17.7k

1

vote

1

answer

21

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Method to rescale signals to mean length

discrete-signals interpolation resampling

answered yesterday Laurent Duval 17.7k

0

votes

3

answers

45

views

What's the difference between calculating the FFT of a constant sound for 5 seconds versus every 1 second and taking the average?

fft

answered yesterday Dan Boschen 10.5k

0

votes

1

answer

45

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Side Lobes in the Magnitude Response of a Low Pass FIR Filter

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modified yesterday BlueSweater 1

0

votes

2

answers

57

views

Using Linear Algebra for DSP

linear-algebra

modified 2 days ago Stanley Pawlukiewicz 7,053

0

votes

0

answers

25

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How to remove sum and difference terms while computing frequency from fft?

fft discrete-signals frequency-spectrum digital-communications

modified yesterday Stanley Pawlukiewicz 7,053

2

votes

6

answers

577

views

Clarification on defining FFT bin sizes

fft dft

answered 2 days ago QuantumPenguin 137

0

votes

0

answers

12

views

SNR computation in frequency domain with scipy.fftpack.fft

fft frequency-spectrum python snr time-series

asked yesterday GWSurfer 1

0

votes

1

answer

32

views

Loudness detection for natural conversation

audio

modified yesterday MHuibers 3

0

votes

0

answers

21

views

l1 regularized optimization problem

optimization

asked yesterday strahd 10

0

votes

2

answers

31

views

Implementation QPSK modulation code in MATLAB

matlab modulation qpsk bpsk

modified 2 days ago Florian 767

0

votes

0

answers

35

views

How can I normalize data taken from apple watch acelerometer?

normalization

modified 2 days ago M. Farooq 150

1

vote

2

answers

84

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DCT vs DFT why do we need/want phase?

dft phase dct

answered Jul 18 at 1:04 mfcc64 26

0

votes

0

answers

27

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Cascading filters at different sampling rates

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modified 2 days ago Verbal Kint 101

1

vote

2

answers

73

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Understanding the phase in DFT

fft phase

modified Jul 17 at 20:31 Cedron Dawg 3,765

0

votes

1

answer

44

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Which Machine or deep learning algorithm is appropriate of this issue?

machine-learning deep-learning

modified 2 days ago Peter K.♦ 17.4k

0

votes

0

answers

16

views

Why does FISTA algorithm not work for signed signals?

compressive-sensing convex-optimization

asked 2 days ago Mr Vinagi 1

1

vote

1

answer

20

views

Definition of MIMO (Multi-input Multi-output ),does this output mean antenna or transmitter?

digital-communications

modified 2 days ago XM551 126

0

votes

0

answers

21

views

Find LF component of AM signal

signal-analysis continuous-signals

asked 2 days ago Marius Gulbrandsen 1

0

votes

1

answer

16

views

How to decode a Barker code

digital-communications

answered 2 days ago Ahmad Bazzi 506

1

vote

2

answers

64

views

Does convolution violate duality of a Fourier Transform

fourier-transform

modified Jul 17 at 13:55 Fat32 16.8k

0

votes

1

answer

43

views

On generalizing Gabor-Heisenberg uncertainty in a noisy environment

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modified Jul 17 at 17:31 Cedron Dawg 3,765

0

votes

1

answer

31

views

FFT and Power Spectrum Normalization

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modified Jul 17 at 20:02 Cedron Dawg 3,765

1

vote

2

answers

78

views

+50

Number of microphone limitation for Spherical Harmonics based DOA estimation

audio-processing array-signal-processing

modified 2 days ago Olli Niemitalo 9,020

0

votes

2

answers

31

views

(FFT) Is it good practice to ignore each bin's phase when characterizing a signal

fft

modified Jul 17 at 12:40 Stanley Pawlukiewicz 7,053

0

votes

1

answer

27

views

Beamforming but only for total power?

signal-analysis beamforming

modified Jul 17 at 18:02 havakok 204

0

votes

1

answer

44

views

Convolution Theorem: Hamming Window on a Time Series and Fourier Domain

filters fourier-transform convolution

modified Jul 17 at 4:54 M. Farooq 150

0

votes

1

answer

71

views

How to group similar patterns together that are shifted along the x axis?

fft fourier-transform cross-correlation time-series hmm

modified 2 days ago Deepak-George Thomas 10

0

votes

1

answer

40

views

Why does the flat part of the BER curve appear after the Viterbi decoder (MatLab)?

matlab forward-error-correction viterbi-algorithm

answered Jul 17 at 7:36 Marcus Müller 12.8k

0

votes

1

answer

20

views

Power and Energy of an Audio file

fft frequency

answered Jul 17 at 9:44 Max 586

1

vote

1

answer

41

views

What is the effect on Hilbert transform of signal after multiplication by sinusoid?

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modified Jul 17 at 9:02 Matt L. 52.4k

0

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1

answer

27

views

What does imaginary Component of a bin's phase in the Fourier Transform mean?

fft

modified Jul 16 at 22:21 hotpaw2 26.4k

0

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0

answers

22

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Generating virtual signals based on real ones

signal-analysis sampling numerical-algorithms

asked Jul 17 at 10:00 Leo 1

1

vote

0

answers

18

views

Size filtering on binary images

image-processing opencv image-segmentation

modified Jul 17 at 15:18 Yves Daoust 878

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