[icecast] Applying dynamic compression to live audio

Akos Maroy darkeye at tyrell.hu
Thu Apr 4 06:08:30 PST 2002



Geoff Shang wrote:
> Hi:
> 
> I want to stream audio from my soundcard, but I'd like to apply some
> dynamic compression to it first (ala winamp's audiostocker plus shoutmuxer
> thingy).  I heard rumours of compression in liveice, but Iv'e been told
> that this only works when it plays from prerecorded MP3, not the live
> input.  I'd like to do this with darkice, but can't see how it could be
> done.  I guess I'd either need to use ecasound or something to get the
> sound from the card, process it and then somehow pipe it into a streamer.
> But neither liveice or darkice would seem to accept audio via a pipe.  I
> guess the other alternative would be to hack darkice to be able to insert
> LADSPA plugins, which would be a neat thing, but then there'd be the issue
> of configuring them which would be an interesting UI issue.
> 
> any ideas?

interesting indeed.

can you tell me more about these LADSPA plugins? Also, the OSALP project 
is aiming for something similar.

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