# Questions tagged [signal-processing]

the analysis, interpretation and manipulation of signals

39 questions
Filter by
Sorted by
Tagged with
31k views

### How to make a peak detector circuit

I wasn't able to find a good guide on this and I only recently discover electronics for myself so have a little knowledge. I was able to find something like what I need Article How does the circuit ...
1k views

### dimensional analysis of the Shannon-Hartley theorem

In the infamous Shannon-Hartley theorem the bandwidth of the channel is measured in Hz (Hertz) but the channel capacity is measured in bps (bits per second). So, either I'm missing something obvious ...
635 views

### Solving Difference Equation Using Z-Transform

I was trying to solve a problem given in my textbook. I have attached the solution given in the book. I thought some modifications where needed to it and tried to solve in a different way. I ended ...
3k views

### How to turn a pulsed signal into a continuous one?

I have a pulse signal at 1 hz which goes high +5V and low 0V. How do i turn it into a continuous one? +5V. i have searched in different places and what i found says that there are different methods ...
7k views

### Is analog signal arithmetic faster than digital one?

Would it be theoretically possible to speed up modern processors if one would use analog signal arithmetic (at the cost of accuracy and precision) instead of digital FPUs (CPU -> DAC -> analog FPU -> ...
5k views

280 views

### Can I differentiate between a UPS, Generator and Main sine wave using a micro-controller?

Are there any distinguishing features of a mains power supply that will allow me to tell the difference between mains power supplied by the utility company, a generator, or a UPS? How can I use a ...
225 views

This is follow-up question to this. For the inferences made below(may be wrong), let $$h[n]=impulse\hspace{1.5mm} response\hspace{1.5mm} of\hspace{1.5mm} the\hspace{1.5mm} LTI\hspace{1.5mm} system$$ ...
462 views

### Problem with biased circuit for oxygen sensor (SGX EC410)

I have designed a circuit for an SGX EC410 oxygen sensor by using these application note -PAGE 4, FIGURE 4 - (http://www.sgxsensortech.com/content/uploads/2014/08/A1A-EC_SENSORS_AN2-Design-of-...
110 views

### A very basic question about DAC conversion in a sound card

This is a conceptual question about how a sound card converts digital data to analog. To illustrate this let's say we have constructed a discrete data which represents a sinusoid with particular ...
4k views

### How does a preamplifier improve the Signal-to-Noise Ratio (SNR)?

I'm trying to understand how a preamplifier works. Is the noise not amplified the same amount as the signal? If so, how is that done in the preamplifier?
250 views

### What are the major components of a read-out circuit for a silicon photomultiplier array?

I would like to couple a 2x2 silicon photomultiplier array (where each of the silicon photomultipliers serves as a "pixel" analog output) with a plastic scintillator piece in order to measure the ...
481 views

### LF-RFID demodulation

I'm trying to read a LF (low frequency) RFID transponder, it works in the following manner: It uses load modulation, the receiver (the base station) generates the carrier and the transponder modulates ...
573 views

### New to microcontrollers…options for getting up and going cheaply

I've never designed a microcontroller circuit before, but have programmed them on dev boards. I've Googled around for a while, but haven't found a definitive answer. Maybe I'm missing something. I ...
1k views

### Detect string plucking in electric bass guitar? [closed]

Anyone knows any idea of how can I detect plucking in a string of a guitar with an arduino (possibly using the pickup signal)? Thanks in advance ! ;)
2k views

### How to get BPSK data from I/Q signal

I am using AD8347(0.8 GHz to 2.7 GHz Direct Conversion Quadrature Demodulator) to demodulate a BPSK modulated carrier wave. There is no intermediate frequency used. By feeding the signal into this ...
74 views

### When to process beam forming algorithms?

I am building a system that uses beam forming to locate noises at different spots. All of the spots will be in front of the microphones (180 degree range of spots). My first question is if the beam ...
636 views

### How to shift signal phase in matlab from this circuit?

The circuit shown is in matlab. Sinus signal is provided by vpin by connecting from PCI. The sinus signal is looks like on the scope. The problem is i want to shift signal phase, from the picture ...
814 views

### How to filter noise of different frequency based on motor power

I am taking torque readings from strain gauges on an actuator and trying to filter the signal to look usable. I have already put in place a median filter that reduces sporadic spikes. When I have the ...
140 views

### Questions on interfacing circuit for an NPN input

I have to use this sinewave outputting sensor with the NPN input of this converter. My previous question was related to the same issue but the question was about a totally different circuit design i.e....
125 views

### Is there a specific preferred order of operation of signals?

Basic Signal Operations Performed on Dependent Variables-- The periodicity of the signal is varied by modifying the horizontal axis values, while the amplitude or the strength remains constant. These ...
113 views

### Guitar to MIDI conversion

I am wanting to measure the pitch of a single guitar string and convert into MIDI within 10ms. FFT takes too much time, I was wondering what other options are worth looking at? The main issue is ...
101 views

### Glitchy pulses in a data acquisition system

A single-ended -10V to +10V 16-bit data acquisition system is composed of 16 single-ended channels where two of the channels are analog outputs and the rest are analog input channels. The transducers ...
332 views

### Difference between bit rate and baud rate? [duplicate]

Everyone seems to have different definitions everywhere I look. According to my lecturer: $R_{bit} = \frac{bits}{time}$ $R_{baud} = \frac{data}{time}$ According to manufacturers : \$R_{bit} = \...
1k views

### Amplifying an audio signal [closed]

Preface Essentially, I want to use the analog signal coming out of my smartphone when I play music to modulate LEDs and piezo electric elements. Initially, I thought that if the raw power output is ...