Re: starting ecasound at boot, in a terminal window

I read that carefully Joel, very interesting.  Will follow what you send
next... :)

On Tue, Jun 20, 2017 at 6:00 AM, Joel Roth <[email protected]> wrote:

> john gibby wrote:
> >  I have one chainsetup for watching movies, and a different one for my
> > Pianoteq piano application (included below).  I would like the piano
> > crossover to come up automatically when I start the computer, but I want
> it
> > to be convenient to change the chainsetup, for when we want to watch a
> > movie.
>
>
> Hi,
>
> First, thanks for this application example, which is to
> switch between to Ecasound setups, possibly sensing a signal
> in a priority input channel and switching over to that
> channel when an audio source is present.
>
> I have been looking into how near this application would be
> possible under Nama, which aspires to be a sort of Bat
> Utility Belt for audio processing with Ecasound.
>
> To start with, I ported John's Ecasound chain setup to Nama
> commands, omitting the presets and replacing the chorder
> operators with Nama's routing conventions. That's all
> I'll cover in this posting.
>
> Here's his setup:
>
>
> > -n:crossover_3chan_piano_cs \
> >           -a:pre1    -pf:./pre1.ecp  -f:f32_le,5,48000 -i:jack -o:loop,1
> \
> >           -a:pre2,woofer,center,rear -f:f32_le,5,48000 -i:loop,1 \
> >           -a:pre2    -pf:./pre2.ecp  -o:loop,2 \
> >           -a:mid,tweeter             -f:f32_le,5,48000 -i:loop,2 \
> >           -a:woofer  -pf:./woofer.ecp    -chorder:1,3,0,0,0,0,0,0,0,0 \
> >           -a:mid     -pf:./mid.ecp       -chorder:0,0,1,2,0,0,0,0,0,0 \
> >           -a:tweeter -pf:./tweeter.ecp   -chorder:0,0,0,0,1,2,0,0,0,0 \
> >           -a:center  -pf:./center_nodelay.ecp
> -chorder:0,0,0,0,0,0,3,0,0,0  \
> >           -a:rear    -pf:./rear.ecp      -chorder:0,0,0,0,0,0,0,0,4,5 \
> >           -a:woofer,mid,tweeter,center,rear -f:f32_le,10,48000 -o:jack \
> >           -a:all -z:mixmode,sum -z:nodb -B:rtlowlatency -b:64
>
> Here's the track listing the results after running
> crossover.nms, my port of the above. You can see most of the
> routing: e.g. the source and destination of each track.
>
>  No. Name       Requested  Status  Source                Destination
>  Vol   Pan
> ============================================================
> ====================
>   1  Main                  OFF     --                    --
>  --    --
>   2  Mixdown               OFF     --                    --
>  --    --
>   3  pre1                  MON     1/2/3/4/5             --
>  --    --
>   4  pre2                  MON     pre1                  --
>  --    --
>   5  woofer                MON     pre1                  1/2
> --    --
>   6  center                MON     pre1                  7
> --    --
>   7  rear                  MON     pre1                  9/10
>  --    --
>   8  mid                   MON     pre2                  3/4
> --    --
>   9  tweeter               MON     pre2                  5/6
> --    --
>
> And here is the chain setup, showing additional channel
> routing. You can also see how Nama uses jack_multi to route
> soundcard inputs and outputs. The chain IDs below correspond
> to the track numbers above.
>
> # ecasound chainsetup file
>
> # general
>
> -z:mixmode,sum -G:jack,Nama,send -b 256 -z:db,100000 -z:nointbuf
> -f:f32_le,10,48000
>
> # audio inputs
>
> -a:3 -i:jack_multi,system:capture_1,system:capture_2,system:
> capture_3,system:capture_4,system:capture_5
> -a:4,5,6,7 -i:loop,pre1_out
> -a:8,9 -i:loop,pre2_out
>
> # post-input processing
>
> -a:5 -chmove:3,2
> -a:6 -chmove:3,1
> -a:7 -chmove:4,1 -chmove:5,2
>
> # audio outputs
>
> -a:3 -o:loop,pre1_out
> -a:4 -o:loop,pre2_out
> -a:5 -o:jack_multi,system:playback_1,system:playback_2
> -a:6 -o:jack_multi,system:playback_7
> -a:7 -o:jack_multi,system:playback_9,system:playback_10
> -a:8 -o:jack_multi,system:playback_3,system:playback_4
> -a:9 -o:jack_multi,system:playback_5,system:playback_6
>
> Okay, here is the script responsible for the above. Note
> that tracks can be connected without specifying a loop
> device.
>
> # crossover.nms
>
> # create tracks and move them to the Aux bus (avoiding automated routing)
>
> add-tracks pre1 pre2 woofer center rear mid tweeter
> for        pre1 pre2 woofer center rear mid tweeter; move-to-bus Aux
>
> select-track pre1
> set-track width 5
>
> for pre2 woofer center rear; source track pre1
>
> woofer # equivalent to 'select-track woofer'
> add-effect chmove 3 2
> stereo
> send 1 # send output to soundcard starting at channel 1
>
> for mid tweeter; source track pre2
>
> mid
> stereo
> send 3 # send output to soundcard starting at channel 3
>
> tweeter
> stereo
> send 5
>
> center mono
> add-effect chmove 3 1
> send 7
>
> rear
> stereo
> afx chmove 4 1 # shortcut for 'add-effect'
> afx chmove 5 2
> send 9
>
> for Aux; remove-fader-effect pan; remove-fader-effect vol
> Main off; rffx vol; rffx pan # shortcut for 'remove-fader-effect'
>
> cheers,
>
> --
> Joel Roth
>
>
>
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