diff --git a/SoundBrotching/.gitignore b/SoundBrotching/.gitignore
index 70d02e9..edf216e 100644
--- a/SoundBrotching/.gitignore
+++ b/SoundBrotching/.gitignore
@@ -9,9 +9,9 @@
 text2wav
 wav2text
 text2ao
-essai
 
 panoramix
 genwaves
 soundbrotch
+essai
 
diff --git a/SoundBrotching/README.md b/SoundBrotching/README.md
index 69c1aeb..4de3d87 100644
--- a/SoundBrotching/README.md
+++ b/SoundBrotching/README.md
@@ -1,6 +1,6 @@
 # SoundBrotching
 
-Stay tuned, film at 11.
+Stay tuned, film at 440.
 
 ## Cheat Code
 
@@ -10,9 +10,9 @@ de ce sous-projet fortranique sont
 ecrits en C, pour un accès facile à des bibliothèques tierces
 comme `libsndfile` ou `libao`, composants essentiels du SoundBrotching.
 
-## Serious game
+## Not so serious game
 
-Quelques exemples simple, mais bruyants...
+Quelques exemples simple, mais bruyants... `runme.sh`
 
 ### genwaves
 
diff --git a/SoundBrotching/c-tools/support.c b/SoundBrotching/c-tools/support.c
index 5abefce..73036cd 100644
--- a/SoundBrotching/c-tools/support.c
+++ b/SoundBrotching/c-tools/support.c
@@ -24,7 +24,17 @@ return 0;
 /* --------------------------------------------------------------- */
 void print_version(char *msg)
 {
-fprintf(stderr, "=== %s compiled %s, %s\n",	\
+fprintf(stderr, "=== %s, support compiled %s, %s\n",	\
 			msg, __DATE__, __TIME__);
 }
 /* --------------------------------------------------------------- */
+int check_textfile_validity(char *filename, int what)
+{
+
+#if DEBUG_LEVEL
+fprintf(stderr, ">>> %s ( '%s' %d )\n", __func__, filename, what);
+#endif
+
+return -1;
+}
+/* --------------------------------------------------------------- */
diff --git a/SoundBrotching/c-tools/support.h b/SoundBrotching/c-tools/support.h
index 1c8b568..5e771b9 100644
--- a/SoundBrotching/c-tools/support.h
+++ b/SoundBrotching/c-tools/support.h
@@ -10,4 +10,6 @@ int display_sf_info(SF_INFO *psf, char *text);
 
 void print_version(char *title);
 
+int check_textfile_validity(char *filename, int what);
+
 /* --------------------------------------------------------- */
diff --git a/SoundBrotching/c-tools/text2wav.c b/SoundBrotching/c-tools/text2wav.c
index 34508ea..cc021a9 100644
--- a/SoundBrotching/c-tools/text2wav.c
+++ b/SoundBrotching/c-tools/text2wav.c
@@ -1,5 +1,5 @@
 /*
- *	TEXT TO WAV
+ *	TEXT TO WAV       -       a klugeware from tTh 2023
  */
 
 #include  <stdio.h>
@@ -27,7 +27,7 @@ int			left, right;
 int			nb_lus, idx;
 
 #if DEBUG_LEVEL
-fprintf(stderr, ">>> %s ( '%s' )\n", __func__, outf);
+fprintf(stderr, ">>> %s ( '%s' %d %d )\n", __func__, outf, sr, format);
 #endif
 
 if (format) {
@@ -78,11 +78,16 @@ while (2==fscanf(input, "%d %d", &left, &right)) {
 sf_write_short(sndf, buffer, idx);
 sf_close(sndf);
 
-fprintf(stderr, "%s: %d buffers written\n", __func__, nb_lus);
+free(buffer);
+
+fprintf(stderr, "%s: %d samples written\n", __func__, nb_lus);
 
 return 0;
 }
 /* --------------------------------------------------------------- */
+/*
+ *	this is a preview software, so no args parsiong yet...
+ */
 int main(int argc, char *argv[])
 {
 int			foo;
diff --git a/SoundBrotching/c-tools/wav2text.c b/SoundBrotching/c-tools/wav2text.c
index 3ba0204..1ed2377 100644
--- a/SoundBrotching/c-tools/wav2text.c
+++ b/SoundBrotching/c-tools/wav2text.c
@@ -59,10 +59,7 @@ if ( NULL == (samples = malloc(BUFFER_SIZE*sizeof(short))) )
 	abort();
 	}
 
-while ( (lu=sf_read_short(sndf, samples, BUFFER_SIZE)) > 0 )
-	{
-	// fprintf(stderr, "   LU  = %5u\n", lu);
-
+while ( (lu=sf_read_short(sndf, samples, BUFFER_SIZE)) > 0 ) {
 	for (foo=0; foo<lu; foo+=2) {
 		printf("%d %d\n", samples[foo], samples[foo+1]);
 		}
diff --git a/SoundBrotching/essai.f90 b/SoundBrotching/essai.f90
index 8e135f3..29669a1 100644
--- a/SoundBrotching/essai.f90
+++ b/SoundBrotching/essai.f90
@@ -11,11 +11,11 @@ program essai
 
   call soundbrotch_version()
 
-  do n = 20, 85
+  do n = 40, 85
     freq = midi2freq(n)
-    write(0, '(12X, I5, 5X, F9.3)') n, freq
-    call sinw_burst2i(6, 22000, freq, freq, 0.9)
-    call silence_burst2i(800)
+    write(0, '("   midi", I5, "   -> ", F9.3, " Hz")') n, freq
+    call sinw_burst2i(6, 44100, freq, freq, 0.9)
+    call silence_burst2i(2900)
   end do
 
 end program
diff --git a/SoundBrotching/runme.sh b/SoundBrotching/runme.sh
new file mode 100755
index 0000000..2324c7b
--- /dev/null
+++ b/SoundBrotching/runme.sh
@@ -0,0 +1,16 @@
+#!/bin/bash
+
+set -e			# trap on error
+
+DATAFILE="essai.text"
+OUTWAV="essai.wav"
+make essai
+
+./essai | tee $DATAFILE | c-tools/text2wav $OUTWAV
+
+sndfile-spectrogram				\
+	--min-freq=30 --max-freq=2000		\
+	--hann					\
+	$OUTWAV					\
+	1200 600				\
+	spectrogram.png
diff --git a/SoundBrotching/soundbrotch.f90 b/SoundBrotching/soundbrotch.f90
index 1b50f36..93196ab 100644
--- a/SoundBrotching/soundbrotch.f90
+++ b/SoundBrotching/soundbrotch.f90
@@ -11,16 +11,14 @@ module soundbrotch
   
   integer, private               :: samplerate    = 48000
   real, private                  :: diapason      = 440.0
-  contains
+contains
   ! ---------------------------------------------------------
   subroutine soundbrotch_version ()
-    write(0, '(1X,A)') "--- this is soundbrotch version alpha 666"
+    write(0, '(1X,A)') "--- this is soundbrotch version alpha 667"
     write(0, *) "--- samplerate", samplerate
     write(0, *) "--- diapason  ", diapason
   end subroutine
   ! ---------------------------------------------------------
-  ! ---------------------------------------------------------
-
   ! ---------------------------------------------------------
   !        premier essai, le prototype peut changer !
 
@@ -33,8 +31,9 @@ module soundbrotch
     integer                    :: idx, left, right
     real                       :: coef
 
+    ! XXX temporary dirty hack
     if (dst .NE. 6) then
-      STOP '   OUPS!'
+      STOP '   OUPS, NOT ON STDOUT!'
     endif
 
     coef = (3.141592654 * 2.0) / real(samplerate)