Return-Path: Received: (qmail 16733 invoked from network); 29 Nov 2001 18:19:22 -0000 Received: from unknown (HELO murphys-inbound.services.quay.plus.net) (212.159.14.225) by excalibur.plus.net with SMTP; 29 Nov 2001 18:19:22 -0000 X-Priority: 3 X-MSMail-Priority: Normal Received: (qmail 21745 invoked from network); 29 Nov 2001 18:19:11 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by murphys.services.quay.plus.net with SMTP; 29 Nov 2001 18:19:11 -0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from majordom by post.thorcom.com with local (Exim 3.33 #2) id 169VfW-0002q4-00 for rsgb_lf_group-outgoing@blacksheep.org; Thu, 29 Nov 2001 18:12:18 +0000 Received: from mailout06.sul.t-online.com ([194.25.134.19] helo=mailout06.sul.t-online.de) by post.thorcom.com with esmtp (Exim 3.33 #2) id 169VfV-0002pz-00 for rsgb_lf_group@blacksheep.org; Thu, 29 Nov 2001 18:12:18 +0000 Received: from fwd00.sul.t-online.de by mailout06.sul.t-online.de with smtp id 169Veo-0002Gd-08; Thu, 29 Nov 2001 19:11:34 +0100 Received: from 217.82.35.65 (0607144537-0001@[217.82.35.65]) by fwd00.sul.t-online.com with smtp id 169Vel-1Rgy3MC; Thu, 29 Nov 2001 19:11:31 +0100 MIME-Version: 1.0 Subject: LF: dsp-filter From: "bernd grupe" To: "lf-group" X-Mailer: T-Online eMail 4.009 Content-Type: Text/Plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit Date: 28 Nov 2001 18:37 GMT Message-ID: <169Vel-1Rgy3MC@fwd00.sul.t-online.com> X-Sender: 0607144537-0001@t-dialin.net Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: Hi all, someone was asking about dsp-filtering by soundcard and phone-output. There is an excellent freeware available: http://www.qsl.net/mmhamsoft/index.html (makoto mori, JE3HHT) for example: smallest filter is 64 Hz BW without any echoeffects -3dB/ -60dB = 1:5; midfreq. is adjustable from 100 to 3 kHz 73 Bernd, DF8ZR