Play music with SAS

1389

收藏 2012-11-21

%macro joy_to_the_world;
data holidays;
  retain fmtname '@$holiday';
  length data $3;
  ratio = 1.05946309436;
  str1 ='A A#B C C#D D#E F F#G G#';
  str2='A BbCbB#DbD EbFbE#GbG Ab';
  o = 1;
  do i = 0 to 87;
p = 55 * ratio**i;
      data = compress(substr(str1,mod(i,12)*2+1,2)||o);
output;
      if data^=compress(substr(str2,mod(i,12)*2+1,2)||o) then do;
      data = compress(substr(str2,mod(i,12)*2+1,2)||o);
      output;
      end;
      if mod(i,12)=2 then o=o+1;
  end;
  rename data=start p=label;
  keep fmtname data p;
run;
proc format cntlin=holidays; run;
%macro play(input);
data _Null_;
  %let i=1;
  %do %while(%scan(&input,&i,%str( ))^=);
%let note = %scan(&input,&i,%str( ));
      %let pitch = %upcase(%scan(&note,1,=));
      %let duration = %scan(&note,2,=);
%let i = %eval(&i+1);
      %if &pitch=R %then
      call sleep((1/&duration)*750);
      %else
      call sound(input("&pitch",$holiday.),(1/&duration)*300);
;
  %end;
run;
%mend;
%play(%str(
C6=1 B5=1.5 A5=6 G5=1 R=2 F5=2 E5=1 D5=1 C5=1
R=2 G5=2 A5=1 R=2 A5=2 B5=1 R=2 B5=2 C6=.33
C6=2 C6=2 B5=2 A5=2 G5=2 G5=1.5 F5=4 E5=2
C6=2 C6=2 B5=2 A5=2 G5=2 G5=1.5 F5=4 E5=2 E5=2
E5=2 E5=2 E5=2 E5=4 F5=4 G5=1 R=4 F5=4 E5=4
D5=2 D5=2 D5=2 D5=4 E5=4 F5=1 R=4 E5=4 D5=4
C5=2 C6=1 A5=2 G5=1.5 F5=6 E5=2 F5=2 E5=1 D5=1 C5=1
));
%mend joy_to_the_world;
%joy_to_the_world;