LowPassFW

  • 1
  • 2
  • Page 2 of 2
Avra
Schreiberling
Avatar
Gender:
Location: Belgrade, Serbia
Age: 53
Homepage: rs.linkedin.com/in…
Posts: 653
Registered: 07 / 2002
Subject:

Re: LowPassFW

 ·  Posted: 12.11.2013 - 01:04  ·  #9
@Merlin:
I will correct my self - if it can be done then I am not aware of such a transformation that does the job well without an array of previous data recordings.
Merlin
Administrator
Avatar
Gender:
Age: 24
Posts: 1409
Registered: 03 / 2005
Subject:

Re: LowPassFW

 ·  Posted: 13.11.2013 - 13:41  ·  #10
My suggester High Pass filter would be very simple to implement...

Code

function HighPassFW(var FiltData : TFiltData; NewVal : word; FilterFreq : TFilterFreq): word;
begin
  LowPassFW( FiltData, NewVal, FilterFreq );
  return( NewVal - FiltData.Value + $8FFF ); // to centre signal - maybe use of integer rather than word is better throughout. 
end;


Whether it works or not is another matter...

Still, it should remove DC bias or low frequency (stable) hum from a system
  • 1
  • 2
  • Page 2 of 2
Selected quotes for multi-quoting:   0

Registered users in this topic

Currently no registered users in this section

The statistic shows who was online during the last 5 minutes. Updated every 90 seconds.
MySQL Queries: 15 · Cache Hits: 14   46   60 · Page-Gen-Time: 0.024108s · Memory Usage: 2 MB · GZIP: on · Viewport: SMXL-HiDPI