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[Daveis]

Is there anyway to get a DirectX plugin to be able to take 2-channels input and output 4 channels output without going through the JRSS(tm) surround? 

I tried use use MC11 with the Convolver plugin under development at http://convolver.sourceforge.net/.  This plug can do FIR filter convolution.  One application of the filter is as a digital crossover.  I'm trying to use the plugin to act as a speaker crossover.  The problem is that the only way I can get 4-channel output is to enable JRSS 4-channel surround processing.  I just want the DSP plugin to take my stereo input and produce 4-channel outputs.  Is that possible?

[Zoner]

Daveis - did you get anywhere with this?

[scthom]

I don't think it's possible to go from 2 to 4 channels with convolver.  You can only convolve waveforms that have the same number of channels.  You might be able to change your 2 channel input file to a 4 channel input (with the 2 extras empty) and then convolve with a 4-channel crossover convolver input.

Another idea I read about on HydrogenAudio was to generate the two surround channels by convolving with just the reverb from a 2 channel source.  This would essentially be the same as the surround sound generated by JRSS though.

[jrp]

You can indeed convolve and mix from 2 to four channels, provided that your player is capable of handling 4-channel outputs. See http://convolver.sourceforge.net/config.html for how to set up config files that provide for that flexibility.