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Phonon's user avatar
Phonon's user avatar
Phonon
  • Member for 12 years, 10 months
  • Last seen more than 1 year ago
31 votes
Accepted

Why are Gaussian filters used as low pass filters in image processing?

28 votes
Accepted

Simplest way of detecting where audio envelopes start and stop

20 votes
Accepted

Difference between SNR and PSNR

18 votes

What factors should I consider in choosing an edge detection algorithm?

17 votes
Accepted

What methods can be used to identify and remove echo from an audio system?

17 votes
Accepted

Filtering 50Hz using a notch filter in MATLAB

16 votes

What are the audio equivalents of images like "Lena", "Mandrill", and "Cameraman"?

15 votes
Accepted

Is wavelet analysis useful for 1D signals?

15 votes
Accepted

Prerequisites for audio signal processing

13 votes

How to Average Complex Responses (and Justification)?

12 votes
Accepted

importance of using histogram equalization

12 votes
Accepted

How should I pre-process a real valued signal in order to use Kay's estimator?

12 votes
Accepted

Problem with the definition of Linearity

11 votes

What is IQ Data?

11 votes

Envelope of time domain signal // Hilbert transform

10 votes

Fast / Efficient Way to Decompose a Separable integer 2D Filter Coefficients without the SVD

10 votes

Why are magnitudes normalised during synthesis (IDFT), not analysis (DFT)?

9 votes

How do you measure "detail" of a signal?

8 votes

Is there an algorithm for finding a frequency without DFT or FFT?

7 votes

Different state-space representations for Auto-Regression and Kalman filter

7 votes
Accepted

Causal systems - Paradox? Confusion of definition?

6 votes
Accepted

Why are there beats in spectrogram / Windowed Fourier Transform of sines?

6 votes
Accepted

Number of Daubechies coefficients

6 votes

How to Extrapolate a 1D Signal?

6 votes
Accepted

How to find the convolution kernel in frequency domain?

6 votes

Is there a way to obtain the impulse response of a discrete system by just knowing it's response to the discrete unit step function?

6 votes
Accepted

Removing baseline drift from ECG signal

5 votes

Why does this manual bilinear transformation yield different results from Matlab's?

5 votes
Accepted

What transformations have been applied to this image to yield four derivatives?

5 votes
Accepted

Maximum frequency of any mobile phone speaker