MATLAB Central > MATLAB Newsreader > Correcting for the phase shift

Thread Subject: Correcting for the phase shift

Subject: Correcting for the phase shift

From: Cesare

Date: 7 Aug, 2009 09:13:02

Message: 1 of 1

Reply to this message

Add author to My Watch List

View original format

Flag as spam

Hello,
I've got the following problem and I was wondering whether anyone could suggest a solution. I need to analyze data which were recorded using an amplifier which would intorduce a phase shift at the very low frequencies due to the built-in high-pass filter. Unfortunately the phase information at these frequencies is very important for us. However, since the data were recorded some time ago, the amplifier is no longer available. The good news though is that the phase shift was measured: sinusoids of different frequency were injected as an input and the delay was measured. However, other infos are missing such as the length of the impulse response of the filter or the impulse response itself. I was wondering if anyone had any idea of how to effectively correcting for the phase shift relying only on this information and without distorting the data.
Many thanks in advance,
Cesare

Tags for this Thread

Everyone's Tags:

Add a New Tag:

Separated by commas
Ex.: root locus, bode

What are tags?

A tag is like a keyword or category label associated with each thread. Tags make it easier for you to find threads of interest.

Anyone can tag a thread. Tags are public and visible to everyone.

Tag Activity for This Thread
Tag	Applied By	Date/Time
dsp	Cesare	7 Aug, 2009 05:14:07
phase shift	Cesare	7 Aug, 2009 05:14:07
filtering	Cesare	7 Aug, 2009 05:14:07

Feed for this Thread

MATLAB Central Terms of Use

NOTICE: Any content you submit to MATLAB Central, including personal information, is not subject to the protections which may be afforded information collected under other sections of The MathWorks, Inc. Web site. You are entirely responsible for all content that you upload, post, e-mail, transmit or otherwise make available via MATLAB Central. The MathWorks does not control the content posted by visitors to MATLAB Central and, does not guarantee the accuracy, integrity, or quality of such content. Under no circumstances will The MathWorks be liable in any way for any content not authored by The MathWorks, or any loss or damage of any kind incurred as a result of the use of any content posted, e-mailed, transmitted or otherwise made available via MATLAB Central. Read the complete Terms prior to use.