Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.1 6/24/83; site drufl.UUCP
Path: utzoo!watmath!clyde!floyd!harpo!ihnp4!drutx!drufl!pmr
From: pmr@drufl.UUCP (Rastocny)
Newsgroups: net.audio
Subject: CD phase shift question
Message-ID: <920@drufl.UUCP>
Date: Tue, 10-Apr-84 19:13:41 EST
Article-I.D.: drufl.920
Posted: Tue Apr 10 19:13:41 1984
Date-Received: Wed, 11-Apr-84 07:31:26 EST
Organization: AT&T Information Systems, Denver
Lines: 11

In the April issue of "Audio" magazine, I read that 11th order filters
(the kind that some CD players use in their anti-aliasing filters) can
alter phase more than 360 degrees.  My question is:

IS THIS AN APRIL FOOLS PRANK OR DO SOME CD PLAYER'S ANTI-ALIASING
FILTERS ACTUALLY ALTER PHASE THIS MUCH?

		Yours for higher fidelity,
		Phil Rastocny
		AT&T-ISL
		..!drufl!pmr