On Thu, May 02, 2013 at 09:40:00PM +1000, Patrick Shirkey wrote: Looks good. Only the section title Ecasound Script to convert mono to Surround doesn't match the text which says "stereo to surround".

PM +1000, Patrick Shirkey wrote: FWIW, here is a Nama script to create Patrick's stereo-to-5.1 converter configuration.

channel 1 - Left Front : left input channel 2 - Right Front : right input channel 3 - Center : left + right + (bandpass 200hz-16000hz) + (amplify 71%) channel 4 - LFE : left + right + (low pass 200hz) + (amplify 71%) channel 5 - Left Rear: inverse left + right + (amplify 50%) + 20ms delay channel 6 - Right Rear: inverse channel 5 These are the commands: add_tracks Stereo L_front R_front Center Subwoofer L_inverted Right R-L L_rear R_rear add_bunch all Stereo L_front R_front Center Subwoofer L_inverted Right R-L L_rear R_rear # no recording to disk, remove volume and pan controls for all; rec_defeat; remove_fader_effect vol; remove_fader_effect pan # create a bus for summing (inverted L) + R add_sub_bus R-L # we'll do our own routing for these tracks Stereo move_to_bus null R-L move_to_bus null # connect six tracks to the stereo source for L_front R_front Center Subwoofer L_inverted Right; source track Stereo # prepare sources for R-L (Note: 'afx' is an abbreviation for 'add_effect') L_inverted afx chmute 2; afx ea -100 Right afx chmute 1 # feed these two tracks to R-L for L_inverted Right; move_to_bus R-L # sum R-L source channels to mono R-L afx chmix 1 # Center: sum R+L to mono, bandpass, output at channel 3 Center afx chmix 3; afx efh 200; afx efl 16000; afx ea 70 # Subwoofer: sum R+L to mono, bandpass, output at channel 4 Subwoofer afx chmix 4; afx efl 200 ; afx ea 70 # L_rear and R_rear get input from R-L for L_rear R_rear; source track R-L # Output L_rear, R_rear at channels 5,6 L_rear afx chmove 1 5 R_rear afx ea -100;afx chmove 1 6 Patrick's original script: #!/bin/bash ecasound -z:mixmode,sum -f:s16_le,2,48000 \ -a:1,2,3,4,5,6 -i $1 \ -a:1 -chmute:2 \ -a:2 -chmute:1 \ -a:3 -chmix:3 -efh:200 -efl:16000 -ea:70 \ -a:4 -chmix:4 -efl:200 -ea:70 \ -a:5 -chmute:2 -ea:-100 \ -a:6 -chmute:1 \ -a:5,6 -o loop,1 \ -a:7 -i loop,1 \ -a:7 -efh:200 -efl:16000 -etd:20,0,1,100,100 -ea:50 -o loop,2 \ -a:8,9 -i loop,2 \ -a:8 -chmix:5 \ -a:9 -chmix:6 -ea:-100 \ -a:1,2,3,4,8,9 -f:s16_le,6,48000 -o $2 Regards, Joel -- Joel Roth _______________________________________________ Linux-audio-user mailing list Linux-audio-user(a)lists.linuxaudio.org http://lists.linuxaudio.org/listinfo/linux-audio-user