From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eric Wong Newsgroups: gmane.comp.audio.sox.devel Subject: Re: dev request Date: Sun, 8 Sep 2013 23:28:13 +0000 Message-ID: <20130908232813.GA23031@dcvr.yhbt.net> References: Reply-To: sox-devel@lists.sourceforge.net NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Trace: ger.gmane.org 1378682905 4865 80.91.229.3 (8 Sep 2013 23:28:25 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sun, 8 Sep 2013 23:28:25 +0000 (UTC) To: sox-devel@lists.sourceforge.net Original-X-From: sox-devel-bounces@lists.sourceforge.net Mon Sep 09 01:28:30 2013 Return-path: Envelope-to: gcasd-sox-devel@m.gmane.org X-ACL-Warn: Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) X-Spam-Score: -0.7 (/) X-Spam-Report: Spam Filtering performed by mx.sourceforge.net. See http://spamassassin.org/tag/ for more details. -0.7 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain X-Headers-End: 1VIoOx-0007jC-6Q 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:328 Archived-At: Received: from lists.sourceforge.net ([216.34.181.88]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1VIoP7-0001nH-IL for gcasd-sox-devel@m.gmane.org; Mon, 09 Sep 2013 01:28:29 +0200 Received: from localhost ([127.0.0.1] helo=sfs-ml-3.v29.ch3.sourceforge.com) by sfs-ml-3.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1VIoP0-00031r-Hl; Sun, 08 Sep 2013 23:28:22 +0000 Received: from sog-mx-1.v43.ch3.sourceforge.com ([172.29.43.191] helo=mx.sourceforge.net) by sfs-ml-3.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1VIoOy-00031l-V5 for sox-devel@lists.sourceforge.net; Sun, 08 Sep 2013 23:28:20 +0000 Received: from dcvr.yhbt.net ([64.71.152.64]) by sog-mx-1.v43.ch3.sourceforge.com with esmtp (Exim 4.76) id 1VIoOx-0007jC-6Q for sox-devel@lists.sourceforge.net; Sun, 08 Sep 2013 23:28:20 +0000 Received: from localhost (dcvr.yhbt.net [127.0.0.1]) by dcvr.yhbt.net (Postfix) with ESMTP id 8A50B1FD6C; Sun, 8 Sep 2013 23:28:13 +0000 (UTC) Brad Holland | Muzik Liberated wrote: > We are looking for a small script (perhaps using sox) that scans a raw > audio file and applies some modulation to the audio file which > amplifies the content at specific points (when the signal is lower > than -6db) and continues to do this every time the sound does this > throughout its decay. I think using the "compand" effect should get you there. Tuning it for your audio is the trickier part. Here's some great posts on using it (not written by me): http://sourceforge.net/mailarchive/message.php?msg_id=23427259 http://mid.gmane.org/20090829011522.cf27e6ee.fmiser@gmail.com http://mid.gmane.org/20091231022430.aaa510b3.fmiser@gmail.com (disclaimer: I'm no expert in audio nor sox, just a Unix plumber) ------------------------------------------------------------------------------ Learn the latest--Visual Studio 2012, SharePoint 2013, SQL 2012, more! Discover the easy way to master current and previous Microsoft technologies and advance your career. Get an incredible 1,500+ hours of step-by-step tutorial videos with LearnDevNow. Subscribe today and save! http://pubads.g.doubleclick.net/gampad/clk?id=58041391&iu=/4140/ostg.clktrk