Hottest Questions This Month

6

votes

3

answers

892

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Delay a signal in time vs in frequency

modified Feb 17 at 5:23 harman 1

7

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3

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655

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Is there an adjective describing a filter with kernel that has zero mean?

filters bandpass highpass-filter terminology kernel

answered Feb 22 at 13:05 leftaroundabout 1,012

4

votes

3

answers

912

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Is this system causal or not?

z-transform transfer-function homework poles-zeros causality

modified Feb 10 at 19:13 Fat32 24.4k

5

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6

answers

276

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Why does a longer observation time improve DFT resolution, but repeating a signal does not?

fft signal-analysis fourier-transform dft

modified 2 hours ago Fat32 24.4k

4

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3

answers

462

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How can convolution be a linear and invariant operation?

convolution linear-systems

answered Feb 2 at 19:43 Laurent Duval 25.6k

9

votes

2

answers

497

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Fourier series of cycloid

fourier fourier-series periodic integration

modified Feb 4 at 21:42 Matt L. 71.6k

2

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3

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172

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Linkwitz-Riley Crossover Sum as Allpass Filter

filters audio filter-design continuous-signals allpass

modified Feb 25 at 7:22 Matt L. 71.6k

1

vote

2

answers

127

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From IQ signal to FM modulated carrier, how its done?

gmsk

modified Feb 27 at 18:04 Dan Boschen 23.2k

5

votes

2

answers

103

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What is the advantage of Wiener filter for noise reduction of a 1D signal?

noise denoising noise-cancellation wiener-filter

modified Feb 12 at 10:20 Fat32 24.4k

4

votes

2

answers

143

views

Does MATLAB code retain its accuracy when is executed in dsp kit?

matlab kit

modified Feb 17 at 15:57 George Theodosiou 519

0

votes

2

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84

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CORDIC, What is it?

digital-communications phase pll

modified 8 hours ago Ali23 43

2

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3

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118

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Beat envelope detection

python envelope

answered Feb 25 at 15:12 bjornhartmann 21

2

votes

1

answer

144

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Block diagram of M-PSK modulation and demodulation

lowpass-filter modulation demodulation qpsk bpsk

answered Feb 12 at 8:42 Marcus Müller 21k

0

votes

2

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136

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Most efficient way to find single dominant frequency (without amplitude) in analog signal

fft frequency demodulation pll

modified Feb 11 at 13:36 Marcus Müller 21k

1

vote

2

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204

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Difficulty with a Fourier Transform

discrete-signals fourier-transform continuous-signals fourier transform

modified Feb 9 at 21:06 Gilles 3,042

5

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2

answers

34

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ADC sampling rate and signal bandwidth for FHSS

filters discrete-signals sampling analog-to-digital

answered 2 days ago Marcus Müller 21k

1

vote

2

answers

109

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Simulating a raised cosine filter

matlab filters digital-communications c reference-implementation

modified yesterday Gilles 3,042

4

votes

1

answer

60

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Transfer function with blackbox modelling is too slow compared to real expectation

matlab transfer-function step-response

answered Feb 27 at 16:33 Matt L. 71.6k

1

vote

2

answers

95

views

How to find the output mean and autocorrelation of a non-linear system

autocorrelation gaussian non-linear stochastic stationary

answered Feb 10 at 3:27 Dilip Sarwate 16.8k

1

vote

4

answers

69

views

What is the correct gain of an RRC Filter?

fft fourier-transform frequency-response impulse-response digital-filters

modified Feb 22 at 16:05 TimWescott 3,778

3

votes

2

answers

77

views

DTFT of sine wave using freqz

matlab dtft cosine

modified Feb 19 at 4:55 Dan Boschen 23.2k

1

vote

1

answer

71

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Phase rotation without Fourier Transform

fourier-transform phase

modified Feb 18 at 12:39 a concerned citizen 995

4

votes

2

answers

53

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Spectral analysis with high selectivity but low number of points

fft signal-analysis

answered Feb 22 at 12:56 Hilmar 19.3k

3

votes

1

answer

107

views

Time recovery algorithm and a symbol with samples

digital-communications symbol-timing

modified Feb 25 at 6:58 Ali23 43

4

votes

1

answer

49

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Why Does the Median Filter Minimize the Absolute Value Error $L_1$ Cost Function?

image-processing filters optimization math

modified Feb 19 at 6:52 Royi 17.5k

2

votes

1

answer

61

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How to handle a logarithmic term in Kalman filter?

discrete-signals estimation kalman-filters derivative

modified Feb 23 at 21:50 Ben 2,627

0

votes

2

answers

77

views

Does sum of random variables follows gaussian distribution although each have different mean and variances?

noise gaussian probability

modified 2 days ago Marcus Müller 21k

3

votes

2

answers

76

views

Is it possible to remove the non-random noise in the signal by averaging?

signal-analysis noise denoising noise-cancellation averaging

modified Feb 14 at 8:28 AJ3 31

1

vote

1

answer

46

views

Why Does ASK Modulation Create Fourier Sidebands?

digital-communications frequency-spectrum modulation fourier-series amplitude-modulation

modified Feb 28 at 2:19 Dan Boschen 23.2k

-1

votes

2

answers

125

views

Minimum sampling frequency, quantization, and bitrate calculation

sampling homework bandwidth

answered Feb 19 at 16:28 erenovic 1

3

votes

1

answer

58

views

UPDATE : How to continue Computing the Convolution

convolution continuous-signals

modified yesterday Joumana L. Kincaid 35

5

votes

1

answer

45

views

how to find frequency response of microphone

discrete-signals frequency modulation transfer-function frequency-response

modified Feb 19 at 13:13 ali 51

3

votes

2

answers

69

views

Symbol time offset simulation

digital-communications synchronization software-defined-radio symbol-timing

modified Feb 12 at 20:58 Gilles 3,042

2

votes

1

answer

88

views

Bandwidth of PSK modulated signal

digital-communications modulation filtering bandwidth

modified Feb 9 at 12:01 Gilles 3,042

3

votes

2

answers

66

views

How to decompose a signal into exponentally decaying sinusoids?

fft decomposition

modified Feb 27 at 18:09 Dan Boschen 23.2k

1

vote

2

answers

79

views

Restore real signal from its complex representation if sampled under Nyquist frequency

nyquist baseband

modified Feb 20 at 17:03 Andrew123 121

5

votes

1

answer

47

views

Expected value of a quantized noisy signal

signal-detection filtering quantization

modified Feb 19 at 12:40 Hilmar 19.3k

1

vote

2

answers

46

views

Calculate amplitude in dB and dBA from audio signal

fft audio embedded-systems

modified Feb 9 at 0:37 monkey 113

1

vote

3

answers

95

views

Polyphase filter bank channelizer FFT or IFFT

fft ifft filter-bank polyphase

modified Feb 13 at 11:26 Fat32 24.4k

1

vote

2

answers

73

views

How do you reduce $H\left(e^{j\frac{\pi}{2}}\right)$ further according to a textbook solution

discrete-signals fourier-transform z-transform proof

modified Feb 4 at 15:13 Gilles 3,042

1

vote

1

answer

43

views

Take FFT of audio represented in PDM

fft audio digital-filters

answered Feb 23 at 21:27 Tom Verbeure 389

2

votes

1

answer

69

views

What is the relationship between group delay and propagation delay for a filter?

filter-design phase infinite-impulse-response delay group-delay

modified Feb 20 at 16:52 Matt L. 71.6k

0

votes

2

answers

53

views

What kind of effect is this and what is it caused by?

noise

answered Feb 3 at 11:22 Hilmar 19.3k

0

votes

3

answers

51

views

how to compute the signal passing from the low pass filter?

discrete-signals fourier-transform

answered Feb 24 at 7:49 DSP Rookie 2,318

0

votes

1

answer

49

views

Product of $L^2$-norms

filters norm

modified Feb 11 at 16:22 Peter K.♦ 19.1k

0

votes

1

answer

49

views

Zeros in FIR Filter

finite-impulse-response poles-zeros

answered Feb 25 at 2:54 ZR Han 418

1

vote

1

answer

103

views

All-pass phase compensation only in a specific frequency range

phase equalization allpass

modified Feb 17 at 8:32 skateskate 13

0

votes

1

answer

78

views

Sub-Band Extraction Techniques for Complex (I/Q) Signal

signal-analysis digital-communications signal-detection digital-filters spectrum-estimation

answered Feb 18 at 11:12 Marcus Müller 21k

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