Questions tagged [analog]
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100 questions
1 vote
1 answer
142 views
Ringing relation to phase response
I’ve been reading lately about analog filters, and in “Electronic Filter Design Handbook”, Williams & Taylor state that the fact that the Bessel filter exhibits no overshoot in its step response, ...
- 413
1 vote
1 answer
197 views
What is the best way to emulate a tube EQ in DSP?
What is the best way to do it? Quite a noob question but could you design a linear filter then add a mask with the non-linearities of the tube (harmonic distortion, saturation, noise)? I'm sure there ...
- 153
0 votes
1 answer
585 views
How to measure process gain of DSSS
I have a replicated a Direct sequence spread spectrum link (schematics taken from ARRL SS handbook) and would like to measure performance characteristics such as process gain. I have 2 questions. I ...
2 votes
2 answers
618 views
What is the meaning of the filter coefficients in case of an analog filter?
I'm trying to improve my poor understanding of analogue filters. Similarly to this question, I've always wondered why libraries like scipy offer an option to design an analogue filter, and when I ...
- 689
4 votes
3 answers
761 views
Emulating an analog Oscillator in DSP
I'm quite new to digital signal processing and currently learning the ropes. I'm fascinated by the concept of emulating analog circuits with DSP and I'm eager to understand how one might emulate an ...
- 153
4 votes
1 answer
647 views
Scipy filter analog vs. digital
It would be greatly appreciated if the usage of the python package scipy's filter (e.g. butter) analog=True argument could be explained. I don't understand what is meant by this (any signal being ...
- 245
0 votes
0 answers
43 views
Phase Unwrapping [duplicate]
I'm also quite new to world of radar signal processing. I don't understand why we have to make phase unwrapping process. Could you light in me about it? It would be nice conversation speak about it. I ...
- 1
2 votes
2 answers
269 views
Relation between Causality and the Phase response of an Amplifier
I am trying to model the response of an amplifier. As per the main answer on this question, if one wishes to do so, they have to look at the Fourier decomposition of the input signal $x(t), \, \tilde{...
- 131
5 votes
2 answers
421 views
Amplifier Placement in a Wireless Receiver
In the context of wireless receiver system design, what is the optimum choice of amplifier placement? Should the received signal be amplified first then filtered or should it be the other way round? ...
- 520
2 votes
2 answers
403 views
How basses are reconstructed on small speakers
Not sure I'm in the right StackExchange group for this question, but it seems linked enough. Let me know if it's not the case. I heard about an acoustic and/or signal processing technique that allows ...
- 123
1 vote
1 answer
337 views
DSP alternatives
A standard IoT device might include a sensor, analog to digital convertor, and processing unit. All of those components could be integrated into one system on a chip. What are the alternatives to ...
- 1,241
0 votes
1 answer
356 views
calculate the normalized angular frequencies
I have two discrete time signals $x_1[n] = 2\sin\left(\frac{2\pi 3.5n}{64}\right)$ and $x_2[n] = \cos\left(\frac{9n}{64}\right)$ I have to calculate the normalized angular frequencies. What I have ...
- 33
0 votes
2 answers
92 views
What's the purpose of dividing the light and combining back in TV Cameras?
This is usually a two-part, trichroic prism that divides the light into separate red, green, and blue beams, each of which is detected by a separate CCD or CMOS image sensor. A circuit (3) ...
0 votes
1 answer
134 views
Time delay of LPF to exponential decay amplitude input
How can one calculate the time delay a Low Pass analog filter adds from steady state when the amplitude of the input signal decays exponentially?
21 votes
3 answers
5k views
What sampling frequency should I use if Nyquist is not available?
I have the following homework question that confuses me: We have an audio emitter that can emit two signals: It either emits a sine wave at 23 kHz or it emits a sine wave at 25 kHz. The receiver has ...
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