From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: =?iso-8859-1?Q?M=E5ns_Rullg=E5rd?= Newsgroups: gmane.comp.audio.sox.devel Subject: Re: 64bit audio read and write Date: Wed, 06 Jul 2016 12:41:16 +0100 Message-ID: References: <577C4A9A.2000105@flatmax.org> <20160706072934.GA24278@dcvr.yhbt.net> <577CD611.80007@flatmax.org> Reply-To: sox-devel@lists.sourceforge.net NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable X-Trace: ger.gmane.org 1467805295 8855 80.91.229.3 (6 Jul 2016 11:41:35 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 6 Jul 2016 11:41:35 +0000 (UTC) Cc: sox-devel@lists.sourceforge.net To: Matt Flax Original-X-From: sox-devel-bounces@lists.sourceforge.net Wed Jul 06 13:41:30 2016 Return-path: Envelope-to: gcasd-sox-devel@m.gmane.org X-ACL-Warn: In-Reply-To: <577CD611.80007@flatmax.org> (Matt Flax's message of "Wed, 6 Jul 2016 19:57:37 +1000") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.5 (gnu/linux) X-Spam-Score: -1.3 (-) X-Spam-Report: Spam Filtering performed by mx.sourceforge.net. See http://spamassassin.org/tag/ for more details. -1.3 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain X-Headers-End: 1bKlCk-0000KG-VX X-BeenThere: sox-devel@lists.sourceforge.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: sox-devel-bounces@lists.sourceforge.net Xref: news.gmane.org gmane.comp.audio.sox.devel:492 Archived-At: Received: from lists.sourceforge.net ([216.34.181.88]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1bKlCq-0001nm-Ut for gcasd-sox-devel@m.gmane.org; Wed, 06 Jul 2016 13:41:29 +0200 Received: from localhost ([127.0.0.1] helo=sfs-ml-4.v29.ch3.sourceforge.com) by sfs-ml-4.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1bKlCn-0004lC-Tx; Wed, 06 Jul 2016 11:41:25 +0000 Received: from sog-mx-2.v43.ch3.sourceforge.com ([172.29.43.192] helo=mx.sourceforge.net) by sfs-ml-4.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1bKlCm-0004l6-ON for sox-devel@lists.sourceforge.net; Wed, 06 Jul 2016 11:41:24 +0000 Received: from unicorn.mansr.com ([81.2.72.234]) by sog-mx-2.v43.ch3.sourceforge.com with esmtps (TLSv1:AES256-SHA:256) (Exim 4.76) id 1bKlCk-0000KG-VX for sox-devel@lists.sourceforge.net; Wed, 06 Jul 2016 11:41:24 +0000 Received: by unicorn.mansr.com (Postfix, from userid 51770) id 1011017B3D; Wed, 6 Jul 2016 12:41:16 +0100 (BST) Matt Flax writes: > On 06/07/16 17:29, Eric Wong wrote: >> I'm not up-to-date with the latest technology, but even 32-bit >> is far beyond the range of human hearing; and last I checked; >> available ADC/DACs can't even make full use of 24-bit (nor >> our ears). > 120 dB SPL (threshold of discomfort) is around 20 billion times louder = > then 20 dB SPL (a whisper). That is approximately 24 bits. > However, we can hear down to 10 dB SPL, or lower for young people ... = > that is approximately 40 bits of dynamic range. 120 dB is outright painful and damages the ears. 100 dB is already unpleasant. You should also check your calculations. With your limits, the required dynamic range would be 110 dB, which comes out to 20 bits with a bit of margin. -- = M=E5ns Rullg=E5rd ---------------------------------------------------------------------------= --- Attend Shape: An AT&T Tech Expo July 15-16. Meet us at AT&T Park in San Francisco, CA to explore cutting-edge tech and listen to tech luminaries present their vision of the future. This family event has something for everyone, including kids. Get more information and register today. http://sdm.link/attshape