Sidechaining a compressor with ecasound?
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Sidechaining a compressor with ecasound?
by S. Massy-4
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Hello,
I'd like to sidechain a compressor using ecasound, but I'm not sure which road to take. One question that arises is that of whether ecasound supports ladspa plugins with more than two inputs, like sc3. Would writing a third channel of audio automatically route that channel to the third input? another possibility I see is sticking a stereo compressor like sc4 in a chain with loops at either end and do channel manipulation to send the audio to be processed to the left channel and the controlling audio to the right channel. Could that possibly work? Cheers, S.M. -- ------------------------------------------------------------------------------ BlackBerry® DevCon Americas, Oct. 18-20, San Francisco, CA http://p.sf.net/sfu/rim-devcon-copy2 _______________________________________________ Ecasound-list mailing list Ecasound-list@... https://lists.sourceforge.net/lists/listinfo/ecasound-list |
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Re: Sidechaining a compressor with ecasound?
by Kai Vehmanen
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Hi,
On Fri, 16 Sep 2011, S. Massy wrote: > One question that arises is that of whether ecasound supports ladspa > plugins with more than two inputs, like sc3. Would writing a third > channel of audio automatically route that channel to the third input? yup, this works. Just make sure you feed matching number of channels (e.g. a stereo stream to a LADSPA plugin with two inputs) and ecasound will detect this and instantiate only one plugin and route the channels to the different inputs in the order the inputs are discovered. ------------------------------------------------------------------------------ BlackBerry® DevCon Americas, Oct. 18-20, San Francisco, CA http://p.sf.net/sfu/rim-devcon-copy2 _______________________________________________ Ecasound-list mailing list Ecasound-list@... https://lists.sourceforge.net/lists/listinfo/ecasound-list |
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Re: Sidechaining a compressor with ecasound?
by S. Massy-4
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On Fri, Sep 16, 2011 at 10:44:27PM +0300, Kai Vehmanen wrote:
> Hi, > > On Fri, 16 Sep 2011, S. Massy wrote: > > >One question that arises is that of whether ecasound supports ladspa > >plugins with more than two inputs, like sc3. Would writing a third > >channel of audio automatically route that channel to the third input? > > yup, this works. Just make sure you feed matching number of channels > (e.g. a stereo stream to a LADSPA plugin with two inputs) and > ecasound will detect this and instantiate only one plugin and route > the channels to the different inputs in the order the inputs are > discovered. ecasound -c -a:all -f:s24,2,48000 -a:1 -i raw/Vocals.wav \ -a:2 -i selfproc/lead3.wav \ -a:3 -i:loop,SCin -o:loop,SCout -eli:1427,0,75,100,-20,10 \ -a:1 -o:loop,SCin -a:2 -o:loop,SCin -chcopy:2 \ -a:4 -i:loop,SCout -epp:50 -o:jack,system But ecasound claims it is unable to create a valid chainsetup from this. It seems right to me. What am I missing? Cheers, S.M. -- ------------------------------------------------------------------------------ BlackBerry® DevCon Americas, Oct. 18-20, San Francisco, CA Learn about the latest advances in developing for the BlackBerry® mobile platform with sessions, labs & more. See new tools and technologies. Register for BlackBerry® DevCon today! http://p.sf.net/sfu/rim-devcon-copy1 _______________________________________________ Ecasound-list mailing list Ecasound-list@... https://lists.sourceforge.net/lists/listinfo/ecasound-list |
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Re: Sidechaining a compressor with ecasound?
by S. Massy-4
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Should read -chcopy:1,2
-- ------------------------------------------------------------------------------ BlackBerry® DevCon Americas, Oct. 18-20, San Francisco, CA Learn about the latest advances in developing for the BlackBerry® mobile platform with sessions, labs & more. See new tools and technologies. Register for BlackBerry® DevCon today! http://p.sf.net/sfu/rim-devcon-copy1 _______________________________________________ Ecasound-list mailing list Ecasound-list@... https://lists.sourceforge.net/lists/listinfo/ecasound-list |
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Re: Sidechaining a compressor with ecasound?
by Julien Claassen
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Hi Massy!
If you do that, you must have a chain with three input channels. so you must be deavious and use the channel copying to your advantage. I suppose you must start out with mono or stereo chains and then temporarily go into a chain with 3 channels. Still it's bloody aweful, since sc3 has three inputs, but two outputs. I'm not sure what Ecasound will say to that. It looks rather difficult to map two outputs of sc3 to three outputs of the chain. this is not much help, I agree, but perhaps it can lead youa little way on your chosen path. Warm regards Julien =-=-=-=-=-=-=-=-=-=-=-=- Such Is Life: Very Intensely Adorable; Frightening Absence Just Arriving, Reigns Disappeared, Ornate - flowers! ====== Find my music at ====== http://juliencoder.de/nama/music.html ..................................... "If you live to be 100, I hope I live to be 100 minus 1 day, so I never have to live without you." (Winnie the Pooh) ------------------------------------------------------------------------------ BlackBerry® DevCon Americas, Oct. 18-20, San Francisco, CA Learn about the latest advances in developing for the BlackBerry® mobile platform with sessions, labs & more. See new tools and technologies. Register for BlackBerry® DevCon today! http://p.sf.net/sfu/rim-devcon-copy1 _______________________________________________ Ecasound-list mailing list Ecasound-list@... https://lists.sourceforge.net/lists/listinfo/ecasound-list |
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Re: Sidechaining a compressor with ecasound?
by S. Massy-4
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On Mon, Sep 19, 2011 at 05:54:51PM +0200, Julien Claassen wrote:
> Hi Massy! > If you do that, you must have a chain with three input channels. > so you must be deavious and use the channel copying to your > advantage. I suppose you must start out with mono or stereo chains > and then temporarily go into a chain with 3 channels. Still it's > bloody aweful, since sc3 has three inputs, but two outputs. I'm not > sure what Ecasound will say to that. It looks rather difficult to > map two outputs of sc3 to three outputs of the chain. analyse_plugin lists the ports in this order: "Sidechain" input, audio "Left input" input, audio "Right input" input, audio So I rather assumed that the first channel needed to be the control/trigger and the next channels were the signal to be processed. Did I assume wrong? Cheers, S.M. ------------------------------------------------------------------------------ BlackBerry® DevCon Americas, Oct. 18-20, San Francisco, CA Learn about the latest advances in developing for the BlackBerry® mobile platform with sessions, labs & more. See new tools and technologies. Register for BlackBerry® DevCon today! http://p.sf.net/sfu/rim-devcon-copy1 _______________________________________________ Ecasound-list mailing list Ecasound-list@... https://lists.sourceforge.net/lists/listinfo/ecasound-list |
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Re: Sidechaining a compressor with ecasound?
by Julien Claassen
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Hey Massy!
No, you are completely right with the channel order. the only thing is, how to best shift the other channels around and have chains with enough ins and outs. :-) Though chcopy and perhaps the other ch* options might help you there. I remember them being quite powerful, if you know what you're doing. :-) Warmly yours Julien =-=-=-=-=-=-=-=-=-=-=-=- Such Is Life: Very Intensely Adorable; Frightening Absence Just Arriving, Reigns Disappeared, Ornate - flowers! ====== Find my music at ====== http://juliencoder.de/nama/music.html ..................................... "If you live to be 100, I hope I live to be 100 minus 1 day, so I never have to live without you." (Winnie the Pooh) ------------------------------------------------------------------------------ BlackBerry® DevCon Americas, Oct. 18-20, San Francisco, CA Learn about the latest advances in developing for the BlackBerry® mobile platform with sessions, labs & more. See new tools and technologies. Register for BlackBerry® DevCon today! http://p.sf.net/sfu/rim-devcon-copy1 _______________________________________________ Ecasound-list mailing list Ecasound-list@... https://lists.sourceforge.net/lists/listinfo/ecasound-list |
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Re: Sidechaining a compressor with ecasound?
by Kai Vehmanen
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Hi,
On Mon, 19 Sep 2011, S. Massy wrote: >> yup, this works. Just make sure you feed matching number of channels >> (e.g. a stereo stream to a LADSPA plugin with two inputs) and >> ecasound will detect this and instantiate only one plugin and route > > Great! But how would this be achieved? Here is what I tried: > ecasound -c -a:all -f:s24,2,48000 -a:1 -i raw/Vocals.wav \ > -a:2 -i selfproc/lead3.wav \ > -a:3 -i:loop,SCin -o:loop,SCout -eli:1427,0,75,100,-20,10 \ > -a:1 -o:loop,SCin -a:2 -o:loop,SCin -chcopy:2 \ > -a:4 -i:loop,SCout -epp:50 -o:jack,system let's try: ecasound -c -z:mixmode,sum \ -a:sc -i scinput.wav -chmix:1 -chmute:2 \ -a:main -i imainnput.wav -chmove:2,3 -chmove:1,2 \ -a:sc,main -f:,3, -o loop,mixdown \ -a:mix -i loop,mixdown -eli:1427,0,75,100,-20,10 \ -f:s24,2,48000 -o output.wav So that should work. The scinput.wav can be mono/stereo thanks to '-chmix:1'. So we sort the three channels to right order, mix them down to 'mix' chain via the loop object (it's important to specify the channel count for the loop object so it knows how many channels to pass through), run the LADSPA plugin, and write the first two channels of the result to output.wav. ------------------------------------------------------------------------------ All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2dcopy1 _______________________________________________ Ecasound-list mailing list Ecasound-list@... https://lists.sourceforge.net/lists/listinfo/ecasound-list |
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