User Gilles

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votes

2

answers

1k

views

Why real part of FFT converts image into rotation + original?

Dec 17 '16 at 20:41 ThP 1,411

17

votes

1

answer

22k

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What is the phase and magnitude response of white noise?

fft noise python

Jun 18 '19 at 1:31 Peter K.♦ 19.1k

17

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6

answers

4k

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Filter design by distributing poles and zeros on parametric curves

filter-design butterworth

May 19 '17 at 13:27 Olli Niemitalo 11.8k

17

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2

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10k

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Is a Kalman filter suitable to filter projected points positions, given Euler angles of the capturing device?

filters kalman-filters state-space

Feb 4 '15 at 17:45 Community♦ 1

16

votes

5

answers

2k

views

What factors should I consider when choosing an IIR filter realization?

filters infinite-impulse-response

May 20 '15 at 19:42 Kyle 1

16

votes

2

answers

29k

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How do I manually plot the frequency response of a bandpass Butterworth filter in MATLAB without freqz function?

matlab filters filter-design bandpass

Oct 15 '18 at 15:19 jojek♦ 9,886

16

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1

answer

4k

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Find similar Music using FFT Spectrums

audio fft music

Feb 12 '12 at 15:21 jonsca 1,834

16

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1

answer

4k

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Why Wavelet developed when we already had Short-time Fourier transform

wavelet

Mar 3 '13 at 20:19 user2718 2,156

15

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2

answers

7k

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What distance metric can I use for comparing images?

image-processing distance-metrics

22h ago Arritmic 241

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3

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How to decide what platform is best to implement real-time audio processing on?

arm dsp-core hardware

Sep 7 '11 at 14:32 Aurelio 181

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3

answers

11k

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Reading the Wavelet transform plot

wavelet

Jul 25 '15 at 20:30 Community♦ 1

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3

answers

15k

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How to demodulate an AFSK signal in software

dft demodulation fsk

Aug 26 '12 at 6:56 Brent Fisher 46

14

votes

5

answers

14k

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Time delay estimation of oscilloscope signals using cross correlation

matlab cross-correlation

Feb 4 '16 at 15:47 AshG 1

14

votes

1

answer

2k

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Why is $y(n) = x(n) + x(n-1)$ a low pass filter?

filters lowpass-filter

Dec 22 '11 at 16:11 Lorem Ipsum 5,444

14

votes

2

answers

1k

views

What bandpass filter design will yield the shortest impulse response?

filters audio infinite-impulse-response impulse-response bandpass

Apr 28 '14 at 14:24 endolith 13.9k

14

votes

7

answers

13k

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Why Does the DFT Assume the Transformed Signal Is Periodic?

discrete-signals signal-analysis fourier-transform dft

Feb 7 '20 at 6:58 Royi 17.5k

14

votes

2

answers

462

views

Detecting meandering rivers in images

image-processing computer-vision

Jun 1 '12 at 11:49 A_A 9,499

14

votes

3

answers

642

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How to efficiently calculate only the low coefficients of a zero-padded FFT

fft dft

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4

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5k

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ICA - Statistical Independence & Eigenvalues of Covariance Matrix

matlab ica statistics independence

May 10 '13 at 17:10 rwolst 321

13

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4

answers

4k

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Recommendation for book - Writing DSP code in C

fft filters autocorrelation c reference-request

Dec 1 '18 at 21:04 Chika Worka - PHD student 9

13

votes

1

answer

1k

views

What are the various definitions for $\rm SNR$, and their associated methods for measuring it?

noise bpsk snr

Aug 19 '16 at 8:08 Community♦ 1

12

votes

1

answer

890

views

Which transform most closely mimics the human auditory system?

fourier-transform frequency-spectrum wavelet music psychoacoustics

Mar 30 '17 at 18:14 Community♦ 1

12

votes

1

answer

1k

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How does ICA handle inevitable delays in signals?

ica

Jan 10 '12 at 15:23 Community♦ 1

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3

answers

2k

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Is it numerically more stable to implement filtering as multiplication or convolution?

filters

Nov 7 '11 at 13:13 Hilmar 8,982

12

votes

2

answers

3k

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What statistic is used to determine presence of a signal in noise?

fft signal-detection

May 31 '16 at 12:00 Gilles 3,042

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votes

2

answers

3k

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methods of computing fixed point atan2 on FPGA

algorithms

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12

votes

3

answers

18k

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What is the bandwidth of a (real) sinusoidal tone, and pulse?

frequency-spectrum frequency bandwidth

May 18 '16 at 15:04 Gilles 3,042

12

votes

2

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1k

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Parametrically degrade the speech to remove emotional content

matlab audio noise

Jan 26 '12 at 16:24 Community♦ 1

12

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4

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3k

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Are complex exponentials the only eigenfunctions of LTI systems?

linear-systems theory eigendecomposition

Apr 6 '18 at 1:41 Community♦ 1

11

votes

2

answers

3k

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How to deal with low fundamental when using AMDF for pitch extraction?

audio pitch fundamental-frequency

Jan 6 at 5:33 robert bristow-johnson 14.8k

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Why real part of FFT converts image into rotation + original?

What is the phase and magnitude response of white noise?

Filter design by distributing poles and zeros on parametric curves

Is a Kalman filter suitable to filter projected points positions, given Euler angles of the capturing device?

What factors should I consider when choosing an IIR filter realization?

How do I manually plot the frequency response of a bandpass Butterworth filter in MATLAB without freqz function?

Find similar Music using FFT Spectrums

Why Wavelet developed when we already had Short-time Fourier transform

What distance metric can I use for comparing images?

How to decide what platform is best to implement real-time audio processing on?

Reading the Wavelet transform plot

How to demodulate an AFSK signal in software

Time delay estimation of oscilloscope signals using cross correlation

Why is $y(n) = x(n) + x(n-1)$ a low pass filter?

What bandpass filter design will yield the shortest impulse response?

Why Does the DFT Assume the Transformed Signal Is Periodic?

Detecting meandering rivers in images

How to efficiently calculate only the low coefficients of a zero-padded FFT

ICA - Statistical Independence & Eigenvalues of Covariance Matrix

Recommendation for book - Writing DSP code in C

What are the various definitions for $\rm SNR$, and their associated methods for measuring it?

Which transform most closely mimics the human auditory system?

How does ICA handle inevitable delays in signals?

Is it numerically more stable to implement filtering as multiplication or convolution?

What statistic is used to determine presence of a signal in noise?

methods of computing fixed point atan2 on FPGA

What is the bandwidth of a (real) sinusoidal tone, and pulse?

Parametrically degrade the speech to remove emotional content

Are complex exponentials the only eigenfunctions of LTI systems?

How to deal with low fundamental when using AMDF for pitch extraction?