Filtering a signal?

  • Thread starter trn09
  • Start date
  • #1
5
0
When a signal from an accelerometer is being filtered should a high or low pass filter be used? I am trying to isolate a particular instance in which we suddenly stopped but I am not sure wether a high or low pass would isolate this.
 

Answers and Replies

  • #2
118
1
You should know the frequency of the signal you are trying to isolate. . .
 
Last edited by a moderator:
  • #3
berkeman
Mentor
58,173
8,227
When a signal from an accelerometer is being filtered should a high or low pass filter be used? I am trying to isolate a particular instance in which we suddenly stopped but I am not sure wether a high or low pass would isolate this.
A constant acceleration would give you a DC signal, so a highpass would keep you from being able to sense that. The sudden stop will have high-frequency components, so a lowpass filter would not be appropriate.

As stated, you need to figure out what the frequency range of interest is, and what the frequency range of noise is, and make some tradeoffs.
 

Related Threads on Filtering a signal?

Replies
6
Views
3K
  • Last Post
Replies
7
Views
7K
  • Last Post
Replies
5
Views
3K
  • Last Post
Replies
3
Views
2K
  • Last Post
Replies
10
Views
13K
  • Last Post
Replies
1
Views
1K
  • Last Post
Replies
9
Views
840
Replies
1
Views
4K
Top