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Unknown reason why the frequency spectrum of a “knocking force” (impulse) gets some spike

fft frequency-spectrum

asked 5 mins ago ComradeH 51

6

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2

answers

499

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Efficient calculation of correlation function every $N^{\rm th}$ point

fft autocorrelation cross-correlation ifft

modified 11 mins ago Community♦ 1

1

vote

1

answer

11

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Scipy butter filter - remove DC offset w/ high sample rate

filters python digital-filters scipy numpy

modified 19 mins ago Ben 2,412

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1

answer

25

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DSP signal filtering and number formats

filtering audio-processing fixed-point

answered 21 mins ago Hilmar 18k

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1

answer

43

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How to correctly use sinc interpolation in Matlab?

discrete-signals interpolation sinc upsampling

modified 33 mins ago Engineer 2,121

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2

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What mathematical function could be used to simulate this sound effect?

untagged

35 mins ago david david 1

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2

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141

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Problems computing the DFT of finite length sequence

fft discrete-signals dft fourier-series math

modified 37 mins ago lennon310 3,410

13

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1

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14k

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Comparison between Fourier transform, short-time Fourier transform and wavelets

fourier-transform wavelet short-time-ft

modified 46 mins ago Gilles 2,862

1

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1

answer

55

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Super Resolution in Frequency Domain Using Compressed Sensing

discrete-signals optimization compressive-sensing linear-algebra sparsity

modified 57 mins ago Royi 16.2k

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1

answer

14

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FFT calculation of an N-tap FIR filter

filters fft finite-impulse-response

answered 1 hour ago Marcus Müller 19.9k

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1

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50

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Processing Wifi Packets

gnuradio sdr

modified 3 hours ago Community♦ 1

0

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1

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39

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Generating a time domain signal using the fundamental frequencies

fft frequency ifft c++ time-domain

modified 7 hours ago Community♦ 1

3

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1

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37

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How to calculate critical damping of a system with two springs and a damper (or two springs and two dampers)?

laplace-transform oscillator damping

modified 8 hours ago V.V.T 832

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Questionable Eb/N0 results for different modulations - measurements for 8-PSK do not match the theory

modulation snr bandwidth qpsk bpsk

asked 8 hours ago JimPanse 19

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