On Fri, May 10, 2013 4:52 am, Joel Roth wrote: > PM +1000, Patrick Shirkey wrote: >> We are please to announce a new Quick Toot. >> >> The AC3 Test Suite for ALSA >> >> http://quicktoots.linux-audio.com > > FWIW, here is a Nama script to create Patrick's stereo-to-5.1 converter > configuration. > Nice work Joel, I have added it to the quicktoot. > 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@xxxxxxxxxxxxxxxxxxxx > http://lists.linuxaudio.org/listinfo/linux-audio-user > -- Patrick Shirkey Boost Hardware Ltd _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
