[CM] processing multi-channel Ladspa effects in SND

[e deleflie]

yes, my only mistake was the syntax .... the ladspa plugin is now
working very well.

Here is the final syntax I am using:

(open-sound "WXYZ.amb")
(apply-ladspa   (list   (make-sample-reader 0 0 0) ;chan 0
                        (make-sample-reader 0 0 1) ;chan 1
                        (make-sample-reader 0 0 2) ;chan 2
                        (make-sample-reader 0 0 3)) ;chan 3
                (list "ambis1" "Ambisonics-square-decoder" 0 1 1.41 2 500 2)
                (mus-sound-frames "WXYZ.amb")
                "ambisonic file")
(save-sound-as "4_speaker_decode.wav")
(exit)

Etienne

On 5/15/07, Bill Schottstaedt <bil@ccrma.stanford.edu> wrote:
> > does that sound like a possible reason that SND could not execute a plugin?
>
> No.  What error are you getting?  Which Ambisonics plugin are you using?
> Also, I notice in your first message that you are calling it:
>
> (apply-ladspa (list (make-sample-reader 0 0 0)  ;chan 0
>              (make-sample-reader 0 0 1) ;chan 1
>              (make-sample-reader 0 0 2) ;chan 2
>              (make-sample-reader 0 0 3) ;chan 3)
>               (list "ambis1" "Ambisonics-square-decoder" 0 1 1.44 2 500 2)
>            duration? origin?)
>
> but the first argument list close paren is commented out -- the "; chan 3)" comment
> goes to the end of the line.  Could it be that you want:
>
> (apply-ladspa (list (make-sample-reader 0 0 0)  ;chan 0
>              (make-sample-reader 0 0 1) ;chan 1
>              (make-sample-reader 0 0 2) ;chan 2
>              (make-sample-reader 0 0 3)) ;chan 3
>               (list "ambis1" "Ambisonics-square-decoder" 0 1 1.44 2 500 2)
>            (frames))
>
> Emacs indentation and paren-matching makes it easier to find this kind of problem.
>
>