Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dl02.r1000.mx.aol.com (Internet Inbound) with ESMTP id 9F35B38000094; Sat, 3 Dec 2011 07:22:20 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1RWoZy-00083t-GW for rs_out_1@blacksheep.org; Sat, 03 Dec 2011 12:20:30 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1RWoZx-00083k-7J for rsgb_lf_group@blacksheep.org; Sat, 03 Dec 2011 12:20:29 +0000 Received: from nm3.bt.bullet.mail.ird.yahoo.com ([212.82.108.234]) by relay1.thorcom.net with smtp (Exim 4.63) (envelope-from ) id 1RWoZw-0004VG-PV for rsgb_lf_group@blacksheep.org; Sat, 03 Dec 2011 12:20:29 +0000 Received: from [212.82.108.229] by nm3.bt.bullet.mail.ird.yahoo.com with NNFMP; 03 Dec 2011 12:20:23 -0000 Received: from [212.82.108.224] by tm2.bt.bullet.mail.ird.yahoo.com with NNFMP; 03 Dec 2011 12:20:23 -0000 Received: from [127.0.0.1] by omp1001.bt.mail.ird.yahoo.com with NNFMP; 03 Dec 2011 12:20:23 -0000 X-Yahoo-Newman-Id: 111047.80710.bm@omp1001.bt.mail.ird.yahoo.com Received: (qmail 10853 invoked from network); 3 Dec 2011 12:20:23 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=btopenworld.com; h=DKIM-Signature:X-Yahoo-Newman-Property:X-YMail-OSG:X-Yahoo-SMTP:Received:Message-ID:From:To:References:In-Reply-To:Subject:Date:MIME-Version:Content-Type:Content-Transfer-Encoding:X-Priority:X-MSMail-Priority:X-Mailer:X-MimeOLE; b=xsXfppBdV7VqibwjBTWqV7Xj+x2UeuubAiq2TW7irjJkFDAeYUB86WzzcEx+Aw6ml6wYbGRReSL17B5aqEmGowwrbftjY6reL9KVreWSKSAltW4qKZvVg9XJajBuTQXLr6VzfWhvPVLC6ub11QmVSRrEhCyWeDCIJJ5Dslk94CE= ; DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=btopenworld.com; s=s1024; t=1322914823; bh=6m+WdFkPEbvFa8yOpFrBaD32BZBglAmnex3ODBG9UXY=; h=X-Yahoo-Newman-Property:X-YMail-OSG:X-Yahoo-SMTP:Received:Message-ID:From:To:References:In-Reply-To:Subject:Date:MIME-Version:Content-Type:Content-Transfer-Encoding:X-Priority:X-MSMail-Priority:X-Mailer:X-MimeOLE; b=tWLwkgtgxGSPA3VweAQOWNTDp+9m2CVNhwS+WtdQ29nVNkr5E1B+DMQPsAxbRmXLjhqNSp9E7Se6bUHmhTB7NzjjkZY96BZ+8r5YtbBADrYSDxCzTmLhrB1UJl+JwS1gEjI1JbVQTUZB8rbSCuyLJy8qnKAtxwNIjxcJUL5oSU4= X-Yahoo-Newman-Property: ymail-3 X-YMail-OSG: vl7UxWIVM1kWd.PaxrVwPkVhW38M2uTvnOz7_DSy.gr9hN4 YIoMUWNiNwGuQeOyY.VwaCVc3FIF8pBLszcN7dpoFBbGnDIMVHrTXTpBSXxq PhNME6MtuYdp238kvpS_A7ssdOPOHAYPgw4JV9197X84xrLSzLn6D4s_rIqg pPutkc7Pt4uxcRvEHp9QU0nYRoL_mvG7fZfS0TJ4Pj5Oxnf.HCNN.zLZn7Jc nJHOxXxbmkn1CiZgthKNVQn8BCJcJV787d7qzzaJNF3Q8qLJTvw0KqgYq1fx 7mNqyRquRX8n.5Ct953h.PNllHkCuvqJYdCmanzBCnytKBySE4.Y.tKTrz4D iHiR_MoBDZwmxu6Amwn_GXV7rD6GBRqtNCHvHLFLxzkRMHMoYn4rcG1SLUet PhFyGR_yru1MeRvE5ww-- X-Yahoo-SMTP: Cxhli3eswBD1ozmtAojhjrja86kWx0Qm9tycD5QR1DKWrOLgjJcXkw-- Received: from JimPC (james.moritz@86.161.94.127 with login) by smtp818.mail.ird.yahoo.com with SMTP; 03 Dec 2011 12:20:22 +0000 GMT Message-ID: From: "James Moritz" To: References: In-Reply-To: Date: Sat, 3 Dec 2011 12:20:36 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Windows Mail 6.0.6002.18197 X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6002.18463 DomainKey-Status: good (testing) X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,UNPARSEABLE_RELAY=0.001 Subject: Re: LF: 16 bit vs 24 bit ADC? Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original 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=0.1 required=5.0 tests=MISSING_OUTLOOK_NAME 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 x-aol-global-disposition: G X-AOL-SCOLL-SCORE: 0:2:415482528:93952408 X-AOL-SCOLL-URL_COUNT: 0 X-AOL-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-d021.2 ; domain : btopenworld.com DKIM : pass x-aol-sid: 3039ac1d4ad04eda147c691f X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none Dear Andy, Bill, LF Group, ...>In fact, any sigma-delta converter is doing exactly this. And all codecs in soundcards are SD type. A sigma delta converter in its simplest form is a one bit D/A runing at a very fast sampling rate. ...> Reminds me of the old DOS era, pre- sound card "Hamcomm" data modes software with its interface, which applied the audio input to a simple zero-crossing comparator, the output of which toggled a handshake line on an RS232 port. In spite of the lack of bits, it managed to generate a reasonable spectrum display, etc. Cheers, Jim Moritz 73 de M0BMU