Delivered-To: daveyxm@virginmedia.com Received: by 10.50.237.98 with SMTP id vb2csp209057igc; Wed, 5 Mar 2014 04:21:40 -0800 (PST) X-Received: by 10.194.179.69 with SMTP id de5mr578608wjc.4.1394022100052; Wed, 05 Mar 2014 04:21:40 -0800 (PST) Return-Path: Received: from post.thorcom.com (post.thorcom.com. [195.171.43.25]) by mx.google.com with ESMTP id i7si2931835wjz.160.2014.03.05.04.21.38 for ; Wed, 05 Mar 2014 04:21:39 -0800 (PST) Received-SPF: neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) client-ip=195.171.43.25; Authentication-Results: mx.google.com; spf=neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) smtp.mail=owner-rsgb_lf_group@blacksheep.org Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1WLAJ5-0001nF-ET for rs_out_1@blacksheep.org; Wed, 05 Mar 2014 11:48:15 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1WLAJ5-0001n6-2E for rsgb_lf_group@blacksheep.org; Wed, 05 Mar 2014 11:48:15 +0000 Received: from parrot.netcom.co.uk ([217.72.171.49]) by relay1.thorcom.net with esmtp (Exim 4.82) (envelope-from ) id 1WLAJ2-0005UF-Mo for rsgb_lf_group@blacksheep.org; Wed, 05 Mar 2014 11:48:13 +0000 Received: from sb.abelian.org (i-194-106-52-83.freedom2surf.net [194.106.52.83]) by parrot.netcom.co.uk (Postfix) with ESMTP id CDD873273E1 for ; Wed, 5 Mar 2014 11:46:47 +0000 (GMT) Received: from [127.0.0.1] (localhost [127.0.0.1]) by sb.abelian.org (Postfix) with ESMTP id BA36928A016B for ; Wed, 5 Mar 2014 11:48:11 +0000 (UTC) Message-ID: <53170EFB.6030403@abelian.org> Date: Wed, 05 Mar 2014 11:48:11 +0000 From: Paul Nicholson User-Agent: Mozilla/5.0 (X11; Linux i686; rv:17.0) Gecko/20130106 Thunderbird/17.0.2 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: ,<53147DD2.8020201@iup.uni-heidelberg.de> <5314C73C.8040507@abelian.org> <531703B6.6050706@tele2.se> In-Reply-To: <531703B6.6050706@tele2.se> X-Spam-Score: 0.7 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Johan wrote: > by "rectangular", do you mean no windowing function at all; > just raw FFT? Yes I mean no window at all. When I tried some other windows the S/N went down a little. Some windows compared: [...] Content analysis details: (0.7 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [217.72.171.49 listed in list.dnswl.org] 0.7 SPF_NEUTRAL SPF: sender does not match SPF record (neutral) X-Scan-Signature: 4ead635eadbaebfaa92cfec77deb715d Subject: Re: LF: 29.499 QRSS 180 for remainer of night... Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.9 required=5.0 tests=FROM_ENDS_IN_NUMS 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 Johan wrote: > by "rectangular", do you mean no windowing function at all; > just raw FFT? Yes I mean no window at all. When I tried some other windows the S/N went down a little. Some windows compared: http://abelian.org/vlf/tmp/29499_140303_180_90_windows.png and I've ranked them in descending order of S/N. Some of the other windows would be best if you had a strong signal that was scalloping over onto a weaker signal. -- Paul Nicholson --