Digital Signal Processing: Anti Aliasing, Sampling & Quantization Explained

  • Thread starter Thread starter Erida
  • Start date Start date
AI Thread Summary
Digital signal processing involves three key steps to convert an analog waveform into a digital format: anti-aliasing filtering, sampling, and quantization. Anti-aliasing filtering removes unwanted frequencies from the signal to prevent distortion. Sampling captures the voltage levels of the waveform at specific intervals using an analog-to-digital converter. Quantization then translates these sampled voltage levels into a digital bit representation. For visual aids, users seek resources that provide graphs illustrating these processes.
Erida
Messages
3
Reaction score
0
Hi...
I have just started reading about digital signal processing and I am a bit confused. I was wondering if you guys could help me... with probably too easy stuff.
So... in order to convert an analogue electrical waveform into a digital wave, there are 3 steps: anti aliasing filtering, sampling and quantization...
What exactly happens to the waveform during each stage?
Do you know any sites where I can find any graphs that exemplify this process?


Thank you!

I'll be forever indebted!:)

Erida
 
Engineering news on Phys.org
Filter-remove frequencies you might not be interested in
Sample-input the voltage of the waveform to your circuit (A to D converter)
Quantization-Code the input voltage into a digital bit representation
 
Thanx a lot man!
 

Thread 'How might electronics be different if AC voltage was 72V at 45 Hz?'

Hey guys. I have a question related to electricity and alternating current. Say an alien fictional society developed electricity, and settled on a standard like 73V AC current at 46 Hz. How would appliances be designed, and what impact would the lower frequency and voltage have on transformers, wiring, TVs, computers, LEDs, motors, and heating, assuming the laws of physics and technology are the same as on Earth?
View full post »

Thread 'What happens if shielded cable has a short to the shield?'

While I was rolling out a shielded cable, a though came to my mind - what happens to the current flow in the cable if there came a short between the wire and the shield in both ends of the cable? For simplicity, lets assume a 1-wire copper wire wrapped in an aluminum shield. The wire and the shield has the same cross section area. There are insulating material between them, and in both ends there is a short between them. My first thought, the total resistance of the cable would be reduced...
View full post »

Thread 'Why does the amperage go real high if there is a low voltage short?'

I used to be an HVAC technician. One time I had a service call in which there was no power to the thermostat. The thermostat did not have power because the fuse in the air handler was blown. The fuse in the air handler was blown because there was a low voltage short. The rubber coating on one of the thermostat wires was chewed off by a rodent. The exposed metal in the thermostat wire was touching the metal cabinet of the air handler. This was a low voltage short. This low voltage...
View full post »

Similar threads

Digital Electronics: Image Frequencies & Nyquist/Shannon Theorems
Replies
7
Views
4K
Is my understanding of the Nyquist theorem correct?
Replies
4
Views
2K
Baseband Signal Processing and Digital to Analog Converters
Replies
2
Views
2K
Gibbs phenomenon caused by digital signal processing?
Replies
5
Views
3K
Nyquist sampling rate and signal anti-aliasing
Replies
8
Views
3K
Understanding Analog-to-Digital Conversion for Digital Computing and Processing
Replies
9
Views
3K
MATLAB Deconvolving two signals with different sampling rates
Replies
4
Views
2K
Modern Digital Audio: Understanding Dither and Oversampling in Hi-Res Age
Replies
17
Views
4K
Op-amp compensation of cascade fudges audio signal oddly
Replies
3
Views
2K
Understanding Signals and Systems: Sampling, DFT, and Aliasing Explained
Replies
14
Views
6K

Hot Threads

Recent Insights

Back
Top