X-GM-THRID: 1234888028149353688 X-Gmail-Labels: rsgb lf Delivered-To: daveyxm@gmail.com Received: by 10.35.22.5 with SMTP id z5cs354180pyi; Sat, 28 Apr 2007 14:32:19 -0700 (PDT) Received: by 10.66.216.20 with SMTP id o20mr4076632ugg.1177795939593; Sat, 28 Apr 2007 14:32:19 -0700 (PDT) Return-Path: Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mx.google.com with ESMTP id x26si7369719ugc.2007.04.28.14.32.17; Sat, 28 Apr 2007 14:32:19 -0700 (PDT) Received-SPF: neutral (google.com: 193.82.116.20 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1HhuUw-0005HM-FO for rs_out_1@blacksheep.org; Sat, 28 Apr 2007 22:30:30 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1HhuUv-0005HD-VW for rsgb_lf_group@blacksheep.org; Sat, 28 Apr 2007 22:30:29 +0100 Received: from mx.omskcity.com ([82.200.88.2]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1HhuUv-0008PJ-0q for rsgb_lf_group@blacksheep.org; Sat, 28 Apr 2007 22:30:29 +0100 Received: from noname.nodomain.nowhere (host193.ttk-90.sotline.ru [82.200.90.193]) by mx.omskcity.com (8.13.6/8.13.6) with ESMTP id l3SLUDQp076263 for ; Sun, 29 Apr 2007 04:30:14 +0700 (OMSST) (envelope-from fitec@omskcity.com) Received: from localhost (fitec@localhost) by noname.nodomain.nowhere (8.8.5/8.8.5) with SMTP id EAA00357 for ; Sun, 29 Apr 2007 04:08:57 GMT X-Authentication-Warning: noname.nodomain.nowhere: fitec owned process doing -bs Date: Sun, 29 Apr 2007 04:08:56 +0000 (GMT) From: "Alexander S. Yurkov" To: rsgb_lf_group@blacksheep.org In-Reply-To: Message-ID: MIME-Version: 1.0 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: RE: Filter expert needed - Mystery of the lost real zero. Content-Type: TEXT/PLAIN; charset=US-ASCII X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false Status: O X-Status: X-Keywords: X-UID: 2006 On Sun, 29 Apr 2007, Alexander S. Yurkov wrote: > I can not easy remember general (without narrow band approximation) form > of LPF to BPF transformation but shure it is posible and yelds > some asymmetry in BPF response. Though somone similar to \omega'=a*\omega + b/\omega with constant a and b. This is NONLINEAR transformation which yelds some distortion of response. 73 de RA9MB/Alex http://www.qsl.net/ra9mb