Starhowl's user avatar
Starhowl's user avatar
Starhowl's user avatar
Starhowl
  • Member for 6 years, 7 months
  • Last seen more than a month ago
7 votes
2 answers
1k views

Why is aliasing inherently non-linear?

4 votes
2 answers
92 views

Factor $|a|^{-1/2}$ in definition of mother wavelets

2 votes
2 answers
156 views

Sub-band partitioning of filter-banks

2 votes
1 answer
329 views

Infinite extent of spectrum, but also in time in Oppenheim's Discrete Time Signal Processing?

2 votes
1 answer
52 views

Sub-band factor 0.5 in uniform filterbank

1 vote
1 answer
642 views

Why is the lowpass-filter coming right after the local oscillator when mixing an RF?

1 vote
4 answers
3k views

When doing a Hilbert-transformation, why not simply multiplying by an exponential?

1 vote
2 answers
2k views

The inverse of an orthogonal matrix is its transpose

0 votes
1 answer
349 views

QAM-spectrum with uneven real & non-odd imaginary part

0 votes
4 answers
186 views

What happens, when an unlimited bandpass-signal gets mixed?

0 votes
3 answers
1k views

Application of the time-shifting property in case of Fourier-Transform of cosine

0 votes
1 answer
307 views

Frequency-ratio at baseband IQ-mixing

0 votes
1 answer
430 views

Conjugate symmetry of real-coefficient filters in Oppenheime's Discrete Time Signal Processing

0 votes
1 answer
419 views

"Noise Spectral Density" a.k.a "Power Spectral Density" in datasheets

0 votes
3 answers
87 views

Definition of causality of a system in Discrete Time Signal Processing [Alan V. Oppenheim]

-1 votes
2 answers
456 views

Adding a constant to a bandpass-signal in transmission

-2 votes
1 answer
89 views

Where in "Discrete Time Signal Processing" (Oppenheim et al.) can I find the scale-change theorem? [closed]