From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Bob S Newsgroups: gmane.comp.audio.sox Subject: Re: volume extremely low when combining many files Date: Thu, 29 Sep 2016 11:40:55 -0500 Message-ID: References: <99482240-79ac-4767-c935-d63238eb374a@eckner.net> <1d05af1827f0efc7968990aea4b54e3e@wingsandbeaks.org.uk> <6C04A1EE-C25C-48BB-AFD9-9D8EEF08E0D1@gmail.com> <52F5EE64-C87E-4A1A-A611-565F42DC1922@gmail.com> <7a8da1cc-5e0c-9fa3-a2cf-ab3b0c588fcf@eckner.net> <20160924154154.psuxcpxgis6lbs6w@www.stare.cz> <909F9001-19FA-4156-9D99-CBEA9CE6A707@gmail.com> Reply-To: sox-users@lists.sourceforge.net NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 (Mac OS X Mail 9.3 \(3124\)) Content-Type: multipart/mixed; boundary="===============0594725293584674767==" X-Trace: blaine.gmane.org 1475167293 9207 195.159.176.226 (29 Sep 2016 16:41:33 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Thu, 29 Sep 2016 16:41:33 +0000 (UTC) To: sox-users@lists.sourceforge.net Original-X-From: sox-users-bounces@lists.sourceforge.net Thu Sep 29 18:41:29 2016 Return-path: Envelope-to: gcas-sox-users@gmane.org Received-SPF: pass (sog-mx-2.v43.ch3.sourceforge.com: domain of gmail.com designates 209.85.218.45 as permitted sender) client-ip=209.85.218.45; envelope-from=bsabiston@gmail.com; helo=mail-oi0-f45.google.com; X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:message-id:mime-version:subject:date :references:to:in-reply-to; bh=VPBHvJEb3rMTYKg9zlTKi/ZAqC0WG762DCtm4TD2w1U=; b=ELg0R8itCtkgpY7LTcNK0ZZcJX/r+gOWlWl5WQrdEusrwYX5VU+evwilsa+xD1qoRZ 7K68Xk5cXKZkAbGReesvLNSBmrr/nbZJaNLpeGQbnljqmC/U1ak9h8jaA0mj6Y8kGToJ bPiAFoKbZGsk/UPbrw+oOvoQjukf1erCSWBIlADGmqFSMNDMITA82jMgJz01JCTURpL/ PENqcKbonRgBDStj2Og0QDCjHdVQ2u9KgfsnKmTMj2cAo/EbZFZvcwAJTpm9nXzIn0rT JEr9y7OIwUYKLNHTSBV78mxj+p9XRF5wQFdVhQ2iDYiSGenhWm7WlINlUzcbnJUrG9S9 gPhw== X-Gm-Message-State: AA6/9Rmi9evpbur86Ycv8V62EEBH9DzYWrpy592ax7o6yJU/DgdcIVvVJimbw65+UbRC5A== X-Received: by 10.157.60.35 with SMTP id q32mr1662594otc.198.1475167257158; Thu, 29 Sep 2016 09:40:57 -0700 (PDT) In-Reply-To: X-Mailer: Apple Mail (2.3124) X-Headers-End: 1bpeOO-0005eR-8h X-BeenThere: sox-users@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-users-bounces@lists.sourceforge.net Xref: news.gmane.org gmane.comp.audio.sox:6303 Archived-At: Received: from lists.sourceforge.net ([216.34.181.88]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bpeOT-0007zA-SN for gcas-sox-users@gmane.org; Thu, 29 Sep 2016 18:41:10 +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 1bpeOP-0002IW-Qh; Thu, 29 Sep 2016 16:41:05 +0000 Received: from sog-mx-2.v43.ch3.sourceforge.com ([172.29.43.192] helo=mx.sourceforge.net) by sfs-ml-3.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1bpeOP-0002IA-7R for sox-users@lists.sourceforge.net; Thu, 29 Sep 2016 16:41:05 +0000 Received: from mail-oi0-f45.google.com ([209.85.218.45]) by sog-mx-2.v43.ch3.sourceforge.com with esmtps (TLSv1:AES128-SHA:128) (Exim 4.76) id 1bpeOO-0005eR-8h for sox-users@lists.sourceforge.net; Thu, 29 Sep 2016 16:41:05 +0000 Received: by mail-oi0-f45.google.com with SMTP id n132so34976579oih.1 for ; Thu, 29 Sep 2016 09:41:04 -0700 (PDT) Received: from [192.168.1.2] (216-82-212-181.static.grandenetworks.net. [216.82.212.181]) by smtp.gmail.com with ESMTPSA id 37sm4603175otd.7.2016.09.29.09.40.54 for (version=TLS1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 29 Sep 2016 09:40:55 -0700 (PDT) --===============0594725293584674767== Content-Type: multipart/alternative; boundary="Apple-Mail=_D5ACB71B-3E2B-456F-A0AE-6F65E9B81286" --Apple-Mail=_D5ACB71B-3E2B-456F-A0AE-6F65E9B81286 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=windows-1252 > On Sep 27, 2016, at 4:30 PM, Erich Eckner wrote: >=20 > Hi Bob, >=20 > yes, I saw your post (but had other stuff to do) - thanks for the = reminder. >=20 > The problem seems to be the "speed" effect, which implies a "rate" > effect, which uses ffts and thus the zero from the pad effect may = become > nonzero (but close to). >=20 > My suggestion is to either use "speed" on sound0000 and generate an > intermediate file or to explicitely use the "rate" effect _before_ = "pad" > (but I'm not sure, the latter works). >=20 > cheers, Erich Hey Erich, Thanks for the reply. However, I tried it without the =91speed=92 = call and still got the same noise But I think I know what the problem = may be now. I just noticed this warning: sox WARN pad: Input audio too short; pads not applied: 1 So I guess the sound is too short for padding to work? I=92m not sure = why the length of the sound would matter for padding. And it *is* = making the sound the length I specify, so =91pad=92 is doing something. = That is kind of weird. =20 Bob --Apple-Mail=_D5ACB71B-3E2B-456F-A0AE-6F65E9B81286 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=windows-1252

On Sep 27, 2016, at 4:30 PM, Erich Eckner = <erich@eckner.net> wrote:

Hi = Bob,

yes, I saw your post (but had other = stuff to do) - thanks for the reminder.

The = problem seems to be the "speed" effect, which implies a "rate"
effect, which uses ffts and thus the zero from the pad effect = may become
nonzero (but close to).

My suggestion is to either use "speed" on sound0000 and = generate an
intermediate file or to explicitely use the = "rate" effect _before_ "pad"
(but I'm not sure, the latter = works).

cheers, Erich


Hey Erich,

  Thanks = for the reply. However, I tried it without the =91speed=92 call and = still got the same noise  But I think I know what the problem may = be now.  I just noticed this warning:

sox = WARN pad: Input audio too short; pads not applied: = 1

So I guess the sound is too short for padding to work? =  I=92m not sure why the length of the sound would matter for = padding.  And it *is* making the sound the length I specify, so = =91pad=92 is doing something.  That is kind of weird. =  

Bob

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