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TheGrapeBeyond
  • Member for 12 years, 1 month
  • Last seen more than 5 years ago
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36 votes
5 answers
39k views

What is the true meaning of a minimum phase system?

21 votes
3 answers
1k views

How were windows originally conceived?

18 votes
3 answers
19k views

When to use the DTFT vs the DFT (and their inverses) in analysis?

14 votes
2 answers
19k views

How to make frequency axis for even and odd FFT length?

12 votes
1 answer
17k views

What exactly is a complex envelope?

9 votes
1 answer
243 views

Remove artifact from space probe image

8 votes
1 answer
2k views

Example of Fourier Transform not existing for real-life signals?

7 votes
2 answers
6k views

Upsample data using FFTs. How is this exactly done?

5 votes
4 answers
2k views

Is $O (N \log N)$ FFT speed the fastest we can ever attain?

4 votes
1 answer
2k views

What is the physics behind the width of a main lobe?

4 votes
1 answer
180 views

Malaysia Flight 370 Image Processing

3 votes
2 answers
17k views

Convolution in the frequency domain

3 votes
1 answer
251 views

Where does homomorphic filtering stand in regards to DSP applications?

3 votes
1 answer
141 views

Correction of a signal through a transmitter

3 votes
2 answers
233 views

Frequency response of system with feedback and feedforward co-efficients?

2 votes
2 answers
1k views

Need help understanding convolution indexing

2 votes
1 answer
98 views

Choosing inverse Z-transform equation, given that $|a|<1$

2 votes
1 answer
77 views

Is it possible to open up this particular convolution equation?

2 votes
1 answer
584 views

Why does circular symmetry of complex envelopes mean that $\mathbb{E} \Big[\mathbf{x}[i] \mathbf{x}^T[i] \Big] = \mathbf{0}$?

1 vote
1 answer
94 views

Is any time-domain vector stored on a digital machine always intrinsically causal? [closed]

1 vote
1 answer
2k views

Time shifts and change in phase

1 vote
3 answers
712 views

Does convolution done via the FFT _undo_ computational gains when signal has zeros every other sample?

1 vote
0 answers
204 views

Upsampling very large data sets efficiently

1 vote
1 answer
105 views

What does it mean for audio to be 'sped up'? How can I undo it?

1 vote
5 answers
1k views

To what extent can we see signals that fall between frequency bins?

0 votes
1 answer
371 views

Is there a closed form expression for main-lobe width increase given a window?

0 votes
1 answer
475 views

Downsampling a PSD that was generated by zero-padding - worth it?

0 votes
1 answer
331 views

What information is lost, if any, in normalizing Seismic/Earthquake time-frames in an STFT to equal variance?