diff --git a/src/common.h b/src/common.h
index 9510072..6eeaaa2 100644
--- a/src/common.h
+++ b/src/common.h
@@ -56,8 +56,8 @@ static RNN_INLINE int lin2ulaw(float x)
 }
 
 
-/** RNNoise wrapper for malloc(). To do your own dynamic allocation, all you need t
-o do is replace this function and rnnoise_free */
+/** RNNoise wrapper for malloc(). To do your own dynamic allocation,
+    all you need to do is replace this function and rnnoise_free */
 #ifndef OVERRIDE_RNNOISE_ALLOC
 static RNN_INLINE void *rnnoise_alloc (size_t size)
 {
diff --git a/src/linux_v_windows.m b/src/linux_v_windows.m
index 6aa2a4d..eec90f0 100644
--- a/src/linux_v_windows.m
+++ b/src/linux_v_windows.m
@@ -8,7 +8,13 @@
 
 1;
 
-function check_vec(fig_num, name, vec1, vec2)
+function [vec1 vec2] = check_vec(fig_num, name, vec1, vec2)
+  # vector may be supplied as matrix that we need to reshape, e.g. for excitation signal
+  [rows cols] = size(vec1);
+  if cols != 1
+    vec1 = reshape(vec1', 1, rows*cols);
+    vec2= reshape(vec2', 1, rows*cols);
+  end
   figure(fig_num); clf;
   plot(vec1); hold on; plot(vec2); hold off;
   title(name);
@@ -79,9 +85,9 @@ check_vec(fig++, "pitch_gain", linux(:,st), windows(:,st)); st += n_pitch_gain;
 en = st + n_lpc-1; check_matrix(fig++, "lpc", linux(:,st:en), windows(:,st:en)); st += n_lpc;
 en = st + n_condition-1; check_matrix(fig++, "condition", linux(:,st:en), windows(:,st:en)); st += n_condition;
 en = st + n_gru_a-1; check_matrix(fig++, "gru a", linux(:,st:en), windows(:,st:en)); st += n_gru_a;
-en = st + n_last_sig-1; check_matrix(fig++, "last_sig", linux(:,st:en), windows(:,st:en)); st += n_last_sig;
-en = st + n_pred-1; check_matrix(fig++, "pred", linux(:,st:en), windows(:,st:en)); st += n_pred;
-en = st + n_exc-1; check_matrix(fig++, "exc", linux(:,st:en), windows(:,st:en)); st += n_exc;
-en = st + n_pcm-1; check_matrix(fig++, "pcm", linux(:,st:en), windows(:,st:en)); st += n_pcm;
 
+en = st + n_last_sig-1; last_sig = check_vec(fig++, "last_sig", linux(:,st:en), windows(:,st:en)); st += n_last_sig;
+en = st + n_pred-1; pred = check_vec(fig++, "pred", linux(:,st:en), windows(:,st:en)); st += n_pred;
+en = st + n_exc-1; exc = check_vec(fig++, "exc", linux(:,st:en), windows(:,st:en)); st += n_exc;
+en = st + n_pcm-1; pcm = check_vec(fig++, "pcm", linux(:,st:en), windows(:,st:en)); st += n_pcm;
 
diff --git a/src/linux_v_windows.sh b/src/linux_v_windows.sh
index fcfb02c..86979a4 100755
--- a/src/linux_v_windows.sh
+++ b/src/linux_v_windows.sh
@@ -14,15 +14,15 @@ p=$PWD
 
 # Windows
 cd build_win/src && make tdump test_lpcnet lpcnet_enc lpcnet_dec
-wine lpcnet_enc.exe --infile ../../wav/$w.wav --outfile $w.bin
-wine lpcnet_dec.exe --infile $w.bin --outfile $w'q_out.raw'
+wine lpcnet_enc.exe -s --infile ../../wav/$w.wav --outfile $w.bin
+wine lpcnet_dec.exe -s --infile $w.bin --outfile $w'q_out.raw'
 #wine tdump.exe ../../wav/$w.wav $w.f32
 #wine test_lpcnet.exe $w.f32 $w'_out.raw'
 cd $p
 
 # Linux
 cd build_linux/src && make test_lpcnet lpcnet_enc lpcnet_dec diff32
-./lpcnet_dec --infile ../../build_win/src/$w.bin --outfile $w'q_out'.raw
+./lpcnet_dec -s --infile ../../build_win/src/$w.bin --outfile $w'q_out'.raw
 #./test_lpcnet ../../build_win/src/$w.f32 $w'_out.raw'
 ./diff32 test_lpcnet_statesq.f32 ../../build_win/src/test_lpcnet_statesq.f32 1842
 cd $p
diff --git a/src/lpcnet.c b/src/lpcnet.c
index 19705bc..786a684 100644
--- a/src/lpcnet.c
+++ b/src/lpcnet.c
@@ -203,6 +203,9 @@ void lpcnet_synthesize(LPCNetState *lpcnet, short *output, const float *features
         pred_ulaw = lin2ulaw(pred);
         run_sample_network(&lpcnet->nnet, pdf, condition, gru_a_condition, lpcnet->last_exc, last_sig_ulaw, pred_ulaw);
         exc = sample_from_pdf(pdf, DUAL_FC_OUT_SIZE, MAX16(0, 1.5f*pitch_gain - .5f), PDF_FLOOR);
+        if (fabs(ulaw2lin(exc)) > 30000) {
+            fprintf(stderr, "count: %d exc: %d %f\n", count, exc, (float)ulaw2lin(exc));
+        }
         pcm = pred + ulaw2lin(exc);
         RNN_MOVE(&lpcnet->last_sig[1], &lpcnet->last_sig[0], LPC_ORDER-1);
         lpcnet->last_sig[0] = pcm;
diff --git a/src/nnet.c b/src/nnet.c
index 859381a..7c53a1c 100644
--- a/src/nnet.c
+++ b/src/nnet.c
@@ -360,7 +360,7 @@ void accum_embedding(const EmbeddingLayer *layer, float *output, int input)
 
 /* needed to replace Windows/gcc rand() with our own rand() function
    to get click free synthesised audio - not sure why */
-#define NNET_RAND_MAX 32767
+#define NNET_RAND_MAX 32768
 static uint32_t next = 1;
 uint16_t nnet_rand(void) {
     next = next * 1103515245 + 12345;
@@ -402,12 +402,14 @@ int sample_from_pdf(const float *pdf, int N, float exp_boost, float pdf_floor)
         tmp[i] = tmp[i-1] + MAX16(0, norm*tmp[i] - pdf_floor);
     }
     /* Do the sampling (from the cdf). */
-    float arand = ((float)nnet_rand()/NNET_RAND_MAX);
+    float annr = (float)nnet_rand();
+    float arand = (annr/NNET_RAND_MAX);
     r = tmp[N-1] * arand;
     
     for (i=0;i<N-1;i++)
     {
         if (r < tmp[i]) return i;
     }
+    fprintf(stderr, "DUAL_FC_OUT_SIZE: %d annr: %f arand: %f\n", DUAL_FC_OUT_SIZE, annr, arand);
     return N-1;
 }