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 the “fir” 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 applications 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.ca...@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 > suggestion, 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 <ulr...@chirlu.de> > An: sox-us...@lists.sourceforge.net > Cc: nihil.sine.ca...@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.ca...@t-online.de: > >> filter with a number of samples 2^18 = 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 by > 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-us...@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 _______________________________________________ SoX-devel mailing list SoX-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sox-devel
