[SI-LIST] Re: sin(x)/x interpolation
- From: <art_porter@xxxxxxxxxxx>
- To: <a.ingraham@xxxxxxxx>, <si-list@xxxxxxxxxxxxx>
- Date: Wed, 28 Jun 2006 08:48:18 -0600
An excellent discussion of this topic can be found in Digital Signal =
Processing by Alan V. Oppenheimer and Ronald W. Schafer, ISBN =
0-13-214635-5, pages 26-30.=20
Art Porter
Agilent Technologies
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] =
On Behalf Of Andrew Ingraham
Sent: Wednesday, June 28, 2006 7:59 AM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Re: sin(x)/x interpolation
sin(x)/x in the time domain is the rough approximation (or consequence) =
of a
brick-wall filter in the frequency domain ... flat response below some
frequency, negligible response above it.
On oscilloscopes when you are displaying a sweep rate that is fast =
relative
to the sample rate, sin(x)/x gives a 'smoother' picture than linear
interpolation between samples, which can be either a good thing, or
deceptive.
Andy
------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
or to administer your membership from a web page, go to:
//www.freelists.org/webpage/si-list
For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
List FAQ wiki page is located at:
http://si-list.org/wiki/wiki.pl?Si-List_FAQ
List technical documents are available at:
http://www.si-list.org
List archives are viewable at: =20
//www.freelists.org/archives/si-list
or at our remote archives:
http://groups.yahoo.com/group/si-list/messages
Old (prior to June 6, 2001) list archives are viewable at:
http://www.qsl.net/wb6tpu
=20
------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
or to administer your membership from a web page, go to:
//www.freelists.org/webpage/si-list
For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
List FAQ wiki page is located at:
http://si-list.org/wiki/wiki.pl?Si-List_FAQ
List technical documents are available at:
http://www.si-list.org
List archives are viewable at:
//www.freelists.org/archives/si-list
or at our remote archives:
http://groups.yahoo.com/group/si-list/messages
Old (prior to June 6, 2001) list archives are viewable at:
http://www.qsl.net/wb6tpu
Other related posts:
