From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Schumacher Marlon Newsgroups: gmane.comp.audio.sox.devel Subject: Re: [SoX-users] fir option to use SoX als offline convolver Date: Sun, 1 Jun 2014 20:01:27 -0400 Message-ID: References: <89619634-d090-499d-b3c8-7163d7afd38b@email.android.com> <1UJYpz-0YrdSa0@fwd50.aul.t-online.de> Reply-To: sox-devel@lists.sourceforge.net NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 (Mac OS X Mail 7.2 \(1874\)) Content-Type: text/plain; charset="windows-1252" Content-Transfer-Encoding: quoted-printable X-Trace: ger.gmane.org 1401667311 28450 80.91.229.3 (2 Jun 2014 00:01:51 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Mon, 2 Jun 2014 00:01:51 +0000 (UTC) To: "nihil.sine.causa@t-online.de" , sox-devel@lists.sourceforge.net Original-X-From: sox-devel-bounces@lists.sourceforge.net Mon Jun 02 02:01:44 2014 Return-path: Envelope-to: gcasd-sox-devel@m.gmane.org X-ACL-Warn: X-Virus-Scanned: amavisd-new at ircam.fr X-Priority: 3 In-Reply-To: <1UJYpz-0YrdSa0@fwd50.aul.t-online.de> X-Mailer: Apple Mail (2.1874) X-Spam-Score: 0.0 (/) X-Spam-Report: Spam Filtering performed by mx.sourceforge.net. 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X-Headers-End: 1WrFh2-0002E6-Pe 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:368 Archived-At: Received: from lists.sourceforge.net ([216.34.181.88]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1WrFh9-0000a0-O0 for gcasd-sox-devel@m.gmane.org; Mon, 02 Jun 2014 02:01:44 +0200 Received: from localhost ([127.0.0.1] helo=sfs-ml-2.v29.ch3.sourceforge.com) by sfs-ml-2.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1WrFh6-0004vM-JY; Mon, 02 Jun 2014 00:01:40 +0000 Received: from sog-mx-4.v43.ch3.sourceforge.com ([172.29.43.194] helo=mx.sourceforge.net) by sfs-ml-2.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1WrFh4-0004vH-Sa for sox-devel@lists.sourceforge.net; Mon, 02 Jun 2014 00:01:38 +0000 Received: from smarthost2.ircam.fr ([129.102.3.72]) by sog-mx-4.v43.ch3.sourceforge.com with esmtp (Exim 4.76) id 1WrFh2-0002E6-Pe for sox-devel@lists.sourceforge.net; Mon, 02 Jun 2014 00:01:38 +0000 Received: from localhost (localhost.localdomain [127.0.0.1]) by smarthost2.ircam.fr (Postfix) with ESMTP id 9BE5C67A47; Mon, 2 Jun 2014 02:01:30 +0200 (CEST) Received: from smarthost2.ircam.fr ([127.0.0.1]) by localhost (smarthost2.ircam.fr [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id BmXqAiycq-14; Mon, 2 Jun 2014 02:01:30 +0200 (CEST) Received: from increvable.ircam.fr (increvable.ircam.fr [IPv6:2001:660:3004:2:230:48ff:fe29:4f48]) by smarthost2.ircam.fr (Postfix) with ESMTP id 82385671F6; Mon, 2 Jun 2014 02:01:30 +0200 (CEST) Received: from [192.168.2.25] (bas9-montrealak-1177755127.dsl.bell.ca [70.51.29.247]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: Schumacher) by increvable.ircam.fr (Postfix) with ESMTP id 9F18A4E376; Mon, 2 Jun 2014 02:01:29 +0200 (CEST) Hi there, Picking up on this email from 2013 as I have a related question: Just wanted to verify what is the limit of the number of coefficients for t= he =93fir=94 effect? In my tests I empirically determined 65536 (2^16). Can= anyone confirm this? Are there specific reasons for this limit or could it= be changed for the next binary release? = PS I'm using "fir" for convolution with impulse responses - hence, these ap= plications are limited to the use of IRs which are shorter than this number= of samples (about 1.5secs @44kHz ... which is rather short :-S) Regards, Marlon On Mar 23, 2013, at 20:31 , nihil.sine.causa@t-online.de wrote: > Ulrich, > = > thank you for your fast answer. I tried a much shorter version of the FIR= filter with 6000 Samples and it worked fine. So I can confirm your suggest= ion, that I run into the limit on the number of coefficients. > = > To change the source code and to compile and bind the project would need = some effort for me, but I will think about that. Do you have any idea where= to finde this limit in the code? = > = > Best Regards, > Harald > = > Von: Ulrich Klauer > An: sox-users@lists.sourceforge.net > Cc: nihil.sine.causa@t-online.de > Betreff: Re: [SoX-users] fir option to use SoX als offline convolver > Datum: Sat, 23 Mar 2013 17:30:35 +0100 > = > nihil.sine.causa@t-online.de: > = >> filter with a number of samples 2^18 =3D 262144. > = >> Assertion failed! >> File: effects_i_dsp.c, Line 95 >> Expression: num_taps * 2 < result > = > There is a limit on the number of coefficients, and it is less than 2^18.= :) I'm not sure that limit is necessary, it can probably be raised. Only b= y changing the source and recompiling, though. > = > Ulrich > = > -------------------------------------------------------------------------= ----- > Everyone hates slow websites. So do we. > Make your web apps faster with AppDynamics > Download AppDynamics Lite for free today: > http://p.sf.net/sfu/appdyn_d2d_mar_______________________________________= ________ > Sox-users mailing list > Sox-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/sox-users ---------------------------------------------------------------------------= --- Learn Graph Databases - Download FREE O'Reilly Book "Graph Databases" is the definitive new guide to graph databases and their = applications. Written by three acclaimed leaders in the field, = this first edition is now available. Download your free book today! http://p.sf.net/sfu/NeoTech