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1
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3answers
73 views

Two signals with the same frequency in the same area can interfere?

If one signal is transmitting form transmitter $TX_1$ with some frequency $X$ and some other transmitter $TX_2$ is sending some other signal with same frequency $X$ will there be any clash or ...
4
votes
1answer
43 views

Understanding “voltage” and “power” in SNR of a sampled signal

I'm facing a gap in my understanding of when a signal is a "voltage" signal and when it is a "power" signal that I've always managed to avoid resolving until now... First what I think I understand, ...
0
votes
1answer
32 views

How do I normalize accelerometer signals values to an relative scale?

Different smartphone devices have accelerometers manufactured by different manufacturers. Say I want to categorize vibrations recieved from various devices into one of the following scales : ...
1
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0answers
51 views

Dealing with quantization level limiting dsp

There is a analog signal in the form as below: $$ f(t)=A \sin(\omega(t) t+\phi)+B \sin(\omega(t-t_1) t+\phi_1) $$ Where $$B<<A$$ We are going to calculate $\phi, \phi_1, t_1 $,using dsp. But ...
0
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0answers
27 views

Building a distributed low-pass filter with cutoff frequency of $1$hz but the highest frequency of $10^{6}$hz

How does one build a distributed low-pass filter with cutoff frequency of $1$hz and highest frequency of $10^{6}$hz (or arbitrarily high)? In case of lumped circuits, this is easy to do, but in case ...
0
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0answers
27 views

distributed low-pass filter frequency range

Suppose that signal's frequency ranges from 0 to some very high frequencies. One builds a low-pass filter which needs to be based on distributed element analysis because lumped-element analysis is ...
0
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0answers
48 views

Creating a jittered clock (in Simulink)

I would like to simulate clock jitter in Simulink. My clock is time varying. I generate the clock with |cos(2*pifrft + g(t))| where g is a function varying with t. I want to give the jitter in terms ...
0
votes
0answers
31 views

How to calculate the frequency of the analog information signal? [FM] [duplicate]

How to calculate the frequency of the information signal from the follow spectrum diagram (it contains only one frequency)? Information signal is also called as original signal but i'm not sure.
0
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2answers
73 views

Confused about anti-aliasing in analog filters

I'm a newbeginner when it comes to signal processing. I'm reading up about anti-aliasing, Nyquist and band-pass filters. There's something I don't get: Anti-aliasing in analog filters. Lemme try to ...
0
votes
1answer
145 views

Analog signal can be discrete time?

I am new to this site and field too.I always thought analog is continouos and digital signal is discete. I read this today and got confused about analog signal Analog can be >continuous time(CT)or ...
0
votes
2answers
549 views

Essential Bandwidth of rect(t/T)

Here is a question I have been trying to solve: Estimate the "essential bandwidth" of a rectangular pulse $$ g(t) = \operatorname{rect}\left(\frac{t}{T}\right), $$ with $T>0$, where this ...
0
votes
1answer
57 views

how to detect signal noise

I have data from a power transformer that has a frequency of 60 hz. Sometimes there are faults in the system and causes a large spike in the reading of the transformer. What I want to do is run the ...
1
vote
1answer
157 views

How increasing the Signal to Quantization noise increases the resolution of ADC

Inside ADC we have a quantizer, when the sampled signal is passed through it, the signal values get discretized. The number of discrete levels in which the signal is discretized is called the ...
2
votes
0answers
76 views

Designing a practical integrator

One way to describe a practical integrator ("leaky integrator") is $$ H(s) = \frac{g R}{1 + sRC} $$ I am trying to understand how to choose the values $g$, $R$ and $C$ because in practice, I will ...
2
votes
1answer
299 views

Analog Hilbert transformer

I know the FIR approach, I have seen IIR, to, but I'd like to know if it's possible to implement a Hilbert transformer in analog domain, i.e. with integrators instead of delays. Is it possible? If ...
0
votes
1answer
39 views

Lpcm encoded data kept on an analog source

Let us say i have some digital data placed in a wav file by lpcm method. At a sampling rate of 44.1khz i can place 5.5kb of data per second of audio by choosing two amplitudes (quantas) for each ...
-2
votes
1answer
69 views

Before the birth of computers how people calculated the bandwidths?

In these days we can able to easily calculate the bandwidths with the help of technology, but in olden days where people used the analog phones, how did they calculated the bandwidths?
0
votes
1answer
118 views

Analog vs. digital communications in PCM and noise [closed]

How do you determine if you are using analog or digital communications? For example when dealing with PCM and noise how can one notice any difference in the signals when using the two types of ...
1
vote
2answers
215 views

Approximate the magnitude response of an analog filter with a digital filter, starting from its gain expression

I have an analog filter with its frequency response curve in dB described by the following expression: $$ N_{dB}=20log_{10}\omega t_1 \sqrt{\frac{1+(\omega t_2)^2}{1+(\omega t_1)^2}} $$ This ...
2
votes
1answer
85 views

Digital Vs. Analog Phase measurement [closed]

I'm working on a Ultrasonic Transducers resonance tracking system. Where phase shift between Voltage and Current is the feedback signal for my system when phase difference is Zero that means system is ...
1
vote
8answers
2k views

Nyquist Frequency Phase Shift

The above figure shows in dashed lines sinusoidal signals of the same frequency at three different phase shifts. The signals are then sampled such that the sinusoidal frequency is exactly a half of ...
0
votes
2answers
338 views

Confusion with ADC conversion in MCP3424

I am learning about ADC MCP3422 Chip, because I want to use ADC Pi chip with my Raspberry Pi which is using MCP3424 ADCs, but I am having trouble understanding how the ADC calculation is done in the ...
3
votes
3answers
134 views

Low analog lowpass + ADC vs High analog lowpass + ADC + low digital lowpass

I'm doing EEG data collection and my amp forces use of an analog lowpass filter before the ADC. I'm fairly sure that I won't be interested in phenomena associated with frequencies of 30Hz or higher, ...
0
votes
1answer
285 views

Why Successive Approximation, Analog to Digital converter is most commonly used? [closed]

There are various types of ADC in used, like, ramp-compare ADC Wilkinson ADC pipeline ADC Flash ADCs Sub-Ranging ADCs Folding ADCs Pipelined ADCs Successive Approximation (Algorithmic) ADCs ...
0
votes
1answer
224 views

Simple analog anti aliasing filter good enough if signal frequency is far from sampling frequency ? What about equivalent time sampling?

I have one and only one frequency signal, a sine signal at f = 10 kHz that is sampled at Fs = 320 kHz. I have read about applying a simple analog anti aliasing (AAA) filter then oversample, do some ...
5
votes
6answers
6k views

Why do we use window in time domain rather than do FFT modify the spectrum and than inverse FFT

I thought that DSP would be done by using FFT of portions of a signal, modify the samples that result from FFT (since they represent the spectrum of our signal + noise) and remove any unwanted signals ...
4
votes
1answer
55 views

Is gamma correction applied in my setup

I am working on a scientific application where I would like to evaluate luminance in an image, however I am unsure if what I receive from my setup is luminance (Y) or luma (Y'). I use a camera with a ...
3
votes
1answer
247 views

Are there characteristics of photographic film that would make it an analog medium?

There was an article a few years ago entitled "Analog is Not the Opposite of Digital". Film is not analog, period. I used to shoot film on a Canon AE-1 from the ’70s. Now I have a digital SLR from ...
2
votes
3answers
5k views

If Digital Signal has frequency components then why we don't use it

As we know there are two kinds of signals: analog signals and digital signals. And there are two common techniques for multiplexing the signals: Time Division Multiplexing (TDM) and Frequency ...
12
votes
1answer
673 views

How to deal with a negative pole (unstable) in the pre-filter of a control system?

So while answering how to design a PI controller for a first order time delayed system (Question Here ) Here is the closed loop equation to a control system: $$ G_C(s) = ...
10
votes
2answers
579 views

Understanding a Bainter Circuit (chebychev filter)

As part of a class in Signal Processing, I am building a 3rd order Chebychev band reject filter. We implement this by using three cascading Bainter circuits. Although not part of the class, I have a ...