Subject: Re: [ecasound] ecasound hangs when adding chain.
From: Kai Vehmanen (firstname.lastname@example.org)
Date: Fri Jun 30 2000 - 18:35:10 EEST
> I've tried version 1.7.9r13 and 1.8.0d14 and both have the result.
> (I also tried 1.6.12r10 but this core dumped whenever trying to
> add a chain)
Yes, this is a __very__ common problem. I've received numerous
problem reports (-a:something causing crashing), but so far
I haven't been able to reproduce the error. Needless to say,
I'm quite anxious to resolve this.
> Now I dont understand the concepts of chains/chain
> setups/controllers. Yet.
I know, ecasound's concepts are a bit different from traditional
multitracks. The key things are:
- there are chains :)
- every chain has exactly one input and one output
- inputs and outputs can be connected to multiple chains
- all other objects (effects, controllers, etc) are
attached to chains
If you keep these in mind, it should be easy to use ecasound.
> ecasound -a:1 -i someaudiofile.wav -a:all -o /dev/dsp
Yep, this is definitely something that works on most
machines, so it must be a library/system issue.
> I can do a c-add in interactive mode but I cant quite work out
> how to impliment it. I've been coming acros hangs and 'out of
> memory' errors while trying to experiment with the interactive
> mode (with version 1.7.9r13)A -a:1 will also hang while in
> interactive mode.
Hmm, this an interesting observation. I'll look into it.
> I did a trace with gdb and find that the program appears to be
> hanging in a libstdc++ call:
> (gdb) bt
> #0 0x4038dc80 in basic_string<char, string_char_traits<char>,
> __default_alloc_template<true, 0> >::Rep::clone () from
Yep, this looks bad. Trying out different versions of libstdc++ would be the first thing I'd try myself. Compiling libstdc++ from sources
is quite painful, so I suggest to use binary-RPMs or debs.
> Maybe just a final question, I've been using the windows program,
> to mix full length songs together, downmixed to produce seemless
> mix CDs(around 25 minutes length total) . Including simple
> amplitude envelopes over each song and a scalar resampling of
> each song.
> Is it worth me learning the interface (and resolving this bug) as
> Ecasound will do this?
Well, as the author of the sw, I guess I'm not the right person to answer your question. ;) Another app you might want to try is MixMagic. I haven't tried it myself, but some of my friends have said it's good. Ecasound is good too, of course, but different. :)
-- Kai Vehmanen <email@example.com> ---------------- CS, University of Turku . . audio software for linux ... http://www.eca.cx . . armchair-tunes mp3/wav/ra .. http://www.wakkanet.fi/sculpcave . -- To unsubscribe send message 'unsubscribe' in the body of the message to <firstname.lastname@example.org>.
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