diff -urN midi_prog-/in.c midi_prog/in.c
--- midi_prog-/in.c	Fri Aug  7 00:00:00 2015
+++ midi_prog/in.c	Fri Aug 28 00:00:00 2015
@@ -1,12 +1,13 @@
 #include "in.h"
 
 void
-in_init(in_rec_t *inp, int ac, char **av)
+in_init(in_rec_t *inp, int ac, char **av, char *ifn)
 {
 	struct out_rec otr;
 	out_init(&otr, ac, av);
 	*inp = otr;
-	inp->fp = stdin;
+	if(ifn == NULL) ifn = "-i";
+	inp->fp = fp_get(ifn, ac, av, "-", "r");
 }
 
 int
diff -urN midi_prog-/in.h midi_prog/in.h
--- midi_prog-/in.h	Fri Aug  7 00:00:00 2015
+++ midi_prog/in.h	Fri Aug 28 00:00:00 2015
@@ -5,7 +5,7 @@
 
 typedef struct out_rec in_rec_t;
 
-void in_init(in_rec_t *inp, int ac, char **av);
+void in_init(in_rec_t *inp, int ac, char **av, char *ifn);
 int in_do(in_rec_t *inp, double *vp);
 int in_do2(in_rec_t *inp, double *vp);
 int in_do_mono(in_rec_t *inp, double *vp);
diff -urN midi_prog-/midtxt.c midi_prog/midtxt.c
--- midi_prog-/midtxt.c	Thu Jun 25 00:00:00 2015
+++ midi_prog/midtxt.c	Fri Aug 28 00:00:00 2015
@@ -429,15 +429,20 @@
 	int def_ch = opt_int("-ch", ac, av, 0);
 	int def_velo = opt_int("-velo", ac, av, 100);
 	int len, len_on, ch, note, velo, delta, l_ac, i;
-	char buf[BUFSZ], lbuf[BUFSZ], *l_av[AVSZ], notes_buf[BUFSZ], note_buf[BUFSZ];
+
+	//char buf[BUFSZ], lbuf[BUFSZ], *l_av[AVSZ], notes_buf[BUFSZ], note_buf[BUFSZ];
+	char buf[BUFSZ], *l_av[AVSZ], notes_buf[BUFSZ], note_buf[BUFSZ];
+
 	char *len_buf, *vp, *notes_str, *chord_str, *sla, *np;
 
 	while(fgets(buf, sizeof(buf), stdin)){
 		if(buf[0] == '#' || buf[0] == ';' || buf[0] == '\n' || buf[0] == '\0') continue;
 
-		strcpy(lbuf, buf);
+		//strcpy(lbuf, buf);
 		l_ac = ARR_N(l_av);
-		line_to_ac_av(lbuf, &l_ac, l_av);
+
+		//line_to_ac_av(lbuf, &l_ac, l_av);
+		line_to_ac_av(buf, &l_ac, l_av);
 
 		if((len_buf = opt_prefix("len=", l_ac, l_av)) == NULL){
 			fputs(buf, stdout);
diff -urN midi_prog-/out.c midi_prog/out.c
--- midi_prog-/out.c	Tue Jun  9 00:00:00 2015
+++ midi_prog/out.c	Fri Aug 28 00:00:00 2015
@@ -32,7 +32,7 @@
 	ot->sign = (opt_idx("-u", ac, av) < 0);
 	ot->ch_num = opt_int("-c", ac, av, 2);
 
-	ot->fp = stdout;
+	ot->fp = fp_get("-o", ac, av, "-", "w");
 	cmd[0] = '\0';
 	fn = "";
 	if(opt_idx("-play", ac, av) >= 0){
@@ -82,6 +82,14 @@
 {
 	int i;
 	for(i=0; i<ot->ch_num; i++) out_do(ot, vp[i]);
+}
+
+void
+out_show_info(struct out_rec *ot)
+{
+	fprintf(stderr, "smp_freq=%d smp_cnt=%d bit_len=%d sign=%d ch_num=%d fp=%s\n",
+		ot->smp_freq, ot->smp_cnt, ot->bit_len, ot->sign, ot->ch_num,
+		ot->fp == stdout ? "stdout" : ot->fp == stdin ? "stdin ???" : "(file)");
 }
 
 /* EOF */
diff -urN midi_prog-/out.h midi_prog/out.h
--- midi_prog-/out.h	Wed Apr 29 00:00:00 2015
+++ midi_prog/out.h	Fri Aug 28 00:00:00 2015
@@ -21,4 +21,6 @@
 void out_do(struct out_rec *ot, double v);
 void out_do2(struct out_rec *ot, double *vp);
 
+void out_show_info(struct out_rec *ot);
+
 #endif
diff -urN midi_prog-/pitdet.c midi_prog/pitdet.c
--- midi_prog-/pitdet.c	Thu Aug 27 00:00:00 2015
+++ midi_prog/pitdet.c	Fri Aug 28 00:00:00 2015
@@ -13,14 +13,19 @@
 }
 
 void
-pitdet_init(struct pitdet *pd, double smp_freq, int adj_cent,
-	    int div, double tick_freq, double abuf_wsec, double thres)
+pitdet_init(struct pitdet *pd, double smp_freq, int ac, char **av)
 {
 	int j;
 
-	pd->div = div;
-	pd->adj_cent = adj_cent;
-	pd->m = pd->div * 128;
+	pd->div = opt_int("-div", ac, av, 1);
+	pd->adj_cent = opt_int("-adj_cent", ac, av, 0);
+	pd->abuf_wsec = opt_double("-abuf_wsec", ac, av, 2*4*4);
+	pd->thres = opt_double("-thres", ac, av, 0.01);
+	pd->lmt_sec = opt_double("-pd_lmt_sec", ac, av, -1);
+	pd->shadow_cut_en = opt_int("-shadow_cut_en", ac, av, 1);
+	pd->tick_freq = opt_double("-tick_freq", ac, av, 2*96);
+
+	pd->m = pd->div * NOTE_N;
 	if((pd->arr = malloc(sizeof(*pd->arr) * pd->m)) == NULL) ERR("No Mem");
 
 	for(j=0; j<pd->m; j++){
@@ -30,7 +35,9 @@
 		double next_freq = pitdet_note_to_freq(pd, next_note);
 		int wn = (int) pitch_wn(freq, next_freq);
 
-		pitch_init(&pd->arr[j], smp_freq, freq, wn, tick_freq, abuf_wsec);
+		if(pd->lmt_sec > 0) while(wn > 1 && wn / (2 * freq) > pd->lmt_sec) wn--;
+
+		pitch_init(&pd->arr[j], smp_freq, freq, wn, pd->tick_freq, pd->abuf_wsec);
 	}
 
 	pd->oldest.sec = -1;
@@ -39,7 +46,6 @@
 	pd->newest.update = 0;
 
 	pd->max_v = -1;
-	pd->thres = thres;
 
 	if((pd->wk = malloc(sizeof(*pd->wk) * pd->m)) == NULL) ERR("No Mem");
 }
@@ -50,12 +56,14 @@
 	int j;
 
 	for(j=0; j<pd->m; j++){
-		double v;
-		int onoff = pitdet_onoff(pd, sec, j, &v);
+		double v = tbuf_get_dbl(&pd->arr[j].ab.tb, sec);
+		int onoff = pitdet_onoff_judge(pd, v);
 		pd->wk[j].stat = onoff ? 0 : -1;
-		if(onoff) pd->wk[j].v = v;
+		pd->wk[j].v = onoff ? v : -1;
 	}
 
+	if(!pd->shadow_cut_en) return;
+
 	while(1){
 		int t = -1;
 		double v_max = 0;
@@ -94,12 +102,6 @@
 			if(!pitdet_onoff_judge(pd, pd->wk[j].v)) pd->wk[j].stat = -1;
 		}
 	}
-
-	for(j=0; j<pd->m; j++){
-		struct pitch *p = &pd->arr[j];
-		double v = pd->wk[j].stat >= 0 ? pd->wk[j].v : -1;
-		tbuf_set_dbl(&p->ab.tb, sec, v);
-	}
 }
 
 void
@@ -115,17 +117,17 @@
 		pitch_add(p, v);
 
 		sec = tbuf_oldest_sec(&p->ab.tb);
-		if(osec < 0 || sec > osec) osec = sec;
+		if(osec == -1 || sec > osec) osec = sec;
 
 		sec = tbuf_newest_sec(&p->ab.tb);
-		if(nsec < 0 || sec < nsec) nsec = sec;
+		if(nsec == -1 || sec < nsec) nsec = sec;
 
 		if(p->ab.max_v > pd->max_v) pd->max_v = p->ab.max_v;
 	}
 	if((pd->oldest.update = (pd->oldest.sec != osec)) != 0) pd->oldest.sec = osec;
 	if((pd->newest.update = (pd->newest.sec != nsec)) != 0) pd->newest.sec = nsec;
 
-	if(pd->oldest.update && pd->oldest.sec >= 0) shadow_cut(pd, pd->oldest.sec);
+	if(pd->newest.update && pd->newest.sec >= 0) shadow_cut(pd, pd->newest.sec);
 }
 
 int
@@ -139,12 +141,4 @@
 pitdet_onoff_judge(struct pitdet *pd, double v)
 {
 	return v / pd->max_v >= pd->thres;
-}
-
-int
-pitdet_onoff(struct pitdet *pd, double sec, int j, double *ret_v)
-{
-	double v = tbuf_get_dbl(&pd->arr[j].ab.tb, sec);
-	if(ret_v) *ret_v = v;
-	return pitdet_onoff_judge(pd, v);
 }
diff -urN midi_prog-/pitdet.h midi_prog/pitdet.h
--- midi_prog-/pitdet.h	Thu Aug 27 12:53:34 2015
+++ midi_prog/pitdet.h	Fri Aug 28 00:00:00 2015
@@ -3,9 +3,17 @@
 
 #include "pitch.h"
 
+#define NOTE_N	128
+
 struct pitdet{
 	int div;
 	int adj_cent;
+	double abuf_wsec;
+	double thres;
+	double lmt_sec;
+	int shadow_cut_en;
+	double tick_freq;
+
 	int m;
 	struct pitch *arr;
 
@@ -15,7 +23,6 @@
 	} oldest, newest;
 
 	double max_v;
-	double thres;
 
 	struct{
 		int stat;
@@ -26,13 +33,10 @@
 double pitdet_note_to_freq(struct pitdet *pd, double note);
 double pitdet_freq_to_note(struct pitdet *pd, double freq);
 
-void pitdet_init(struct pitdet *pd, double smp_freq, int adj_cent,
-		 int div, double tick_freq, double abuf_wsec, double thres);
-
+void pitdet_init(struct pitdet *pd, double smp_freq, int ac, char **av);
 void pitdet_add(struct pitdet *pd, double v);
 
 int pitdet_sec_to_tick(struct pitdet *pd, double sec);
 int pitdet_onoff_judge(struct pitdet *pd, double v);
-int pitdet_onoff(struct pitdet *pd, double sec, int j, double *ret_v);
 
 #endif
diff -urN midi_prog-/rawmix2.c midi_prog/rawmix2.c
--- midi_prog-/rawmix2.c	Tue Aug 25 00:00:00 2015
+++ midi_prog/rawmix2.c	Fri Aug 28 00:00:00 2015
@@ -5,33 +5,33 @@
 int
 main(int ac, char **av)
 {
-	FILE *fp_l = fp_get("-l", ac, av, "-", "r");
-	FILE *fp_r = fp_get("-r", ac, av, "-", "r");
-	FILE *fp_o = fp_get("-o", ac, av, "-", "w");
 	struct out_rec otr;
 	in_rec_t in_l, in_r;
 
-	if(fp_l == NULL || fp_r == NULL || fp_o == NULL) ERR("Can't open");
+	char *l_opt = opt_str("-L", ac, av, NULL);
+	char *r_opt = opt_str("-R", ac, av, NULL);
+	char *l_av[ AVSZ ], *r_av[ AVSZ ];
+	int l_ac = AVSZ, r_ac = AVSZ;
 
+	opt_show(ac, av);
+
+	line_to_ac_av(l_opt, &l_ac, l_av);
+	line_to_ac_av(r_opt, &r_ac, r_av);
+
+	in_init(&in_l, l_ac, l_av, NULL);
+	in_init(&in_r, r_ac, r_av, NULL);
 	out_init(&otr, ac, av);
-	otr.fp = fp_o;
 
-	in_init(&in_l, ac, av);
-	in_l.fp = fp_l;
-	in_l.ch_num = 1;
-
-	in_init(&in_r, ac, av);
-	in_r.fp = fp_r;
-	in_r.ch_num = 1;
+	out_show_info(&otr);
+
+	if(in_l.fp == NULL || in_r.fp == NULL || otr.fp == NULL) ERR("Can't open");
 
 	while(1){
 		double v[2];
-		if(in_do(&in_l, &v[0]) == EOF) break;
-		if(in_do(&in_r, &v[1]) == EOF) break;
+		if(in_do_mono(&in_l, &v[0]) == EOF) break;
+		if(in_do_mono(&in_r, &v[1]) == EOF) break;
 		out_do2(&otr, v);
 	}
-
-	fclose(fp_l);
-	fclose(fp_r);
+	fclose(otr.fp);
 	return 0;
 }
diff -urN midi_prog-/tool.c midi_prog/tool.c
--- midi_prog-/tool.c	Thu Aug 27 00:00:00 2015
+++ midi_prog/tool.c	Fri Aug 28 00:00:00 2015
@@ -54,7 +54,7 @@
 {
 	int j, js, je;
 	char s[32];
-	double sec = pd->oldest.sec;
+	double sec = pd->newest.sec;
 
 	sprintf(s, "sec=%f ", sec);
 	printf("%s", s);
@@ -62,8 +62,7 @@
 	show_spectre_modify_area(pd, ac, av, s, &js, &je);
 
 	for(j=js; j<je; j++){
-		struct pitch *p = &pd->arr[j];
-		double v = tbuf_get_dbl(&p->ab.tb, sec);
+		double v = pd->wk[j].v;
 		int iv = (int)(10 * v / pd->max_v);
 
 		if(iv < 0) iv = -1;
@@ -75,43 +74,6 @@
 	putchar('\n');
 }
 
-#define NOTE_N		128
-
-struct chatt{
-	double lmt_sec, sec, chg_try_sec;
-	int onoff;
-};
-
-void
-chatt_init(struct chatt *ct, double lmt_sec)
-{
-	ct->lmt_sec = lmt_sec;
-	ct->sec = 0;
-	ct->chg_try_sec = -1;
-	ct->onoff = 0;
-}
-
-int
-chatt_add(struct chatt *ct, double sec, int onoff)
-{
-	if(onoff == ct->onoff){
-		ct->chg_try_sec = -1;
-		return 0;
-	}
-	if(sec - ct->sec < ct->lmt_sec) return 0;
-
-	if(ct->chg_try_sec < 0){
-		ct->chg_try_sec = sec;
-		return 0;
-	}
-	if(sec - ct->chg_try_sec < ct->lmt_sec) return 0;	
-
-	ct->sec = ct->chg_try_sec;
-	ct->onoff = onoff;
-	ct->chg_try_sec = -1;
-	return 1;
-}
-
 struct note_onoff{
 	struct chatt ct;
 	struct abuf ab;
@@ -121,10 +83,10 @@
 } note_onoff[ NOTE_N ];
 
 void
-note_onoff_init(struct note_onoff *nto, double lmt_sec, double tick_freq, struct pitdet *pd, int note)
+note_onoff_init(struct note_onoff *nto, struct pitdet *pd, int note, int lmt_sec)
 {
 	chatt_init(&nto->ct, lmt_sec);
-	abuf_init(&nto->ab, tick_freq, 2*4*4);
+	abuf_init(&nto->ab, pd->tick_freq, 2*4*4);
 	nto->pd = pd;
 	nto->note = note;
 	nto->on_sec = -1;
@@ -171,7 +133,7 @@
 static void
 midi_out(struct pitdet *pd)
 {
-	double sec = pd->oldest.sec;
+	double sec = pd->newest.sec;
 	int i, k;
 	int ch = 0;
 
@@ -180,7 +142,8 @@
 		double sum = 0, v;
 		for(k=0; k<pd->div; k++){
 			int j = i * pd->div + k;
-			int o = pitdet_onoff(pd, sec, j, &v);
+			v = pd->wk[j].v;
+			int o = pitdet_onoff_judge(pd, v);
 			onoff |= o;
 			if(o) sum += v;
 		}
@@ -197,32 +160,36 @@
 	int i;
 
 	struct pitdet pd;
-	int adj_cent = opt_int("-adj_cent", ac, av, 0);
-	int div = opt_int("-div", ac, av, 1);
-	double abuf_wsec = opt_double("-abuf_wsec", ac, av, 2.5);
-	double tick_freq = opt_double("-tick_freq", ac, av, 2*96);
 	int show = opt_idx("-show", ac, av) > 0;
 	int midi = opt_idx("-midi", ac, av) > 0;
 	int abuf_wsec_chk = opt_idx("-abuf_wsec_chk", ac, av) > 0;
 	double lmt_sec = opt_double("-lmt_sec", ac, av, 2.0/32);
-	double thres = opt_double("-thres", ac, av, 0.1);
 	int sec, s;
 
-	in_init(&in, ac, av);
-	pitdet_init(&pd, in.smp_freq, adj_cent, div, tick_freq, abuf_wsec, thres);
+	in_init(&in, ac, av, NULL);
+	pitdet_init(&pd, in.smp_freq, ac, av);
+
+	for(i=0; i<NOTE_N; i++) note_onoff_init(&note_onoff[i], &pd, i, lmt_sec);
 
-	for(i=0; i<NOTE_N; i++) note_onoff_init(&note_onoff[i], lmt_sec, tick_freq, &pd, i);
+	if(opt_idx("-pitch_show", ac, av) > 0){
+		int j;
+		for(j=0; j<pd.m; j++){
+			struct pitch *p = &pd.arr[j];
+			fprintf(stderr, "%d freq=%f wn=%d sb.wsec=%f\n",
+				j, p->freq, p->wn, p->sb.tb.wsec);
+		}
+	}
 
 	while(in_do_mono(&in, &v) != EOF){
 		pitdet_add(&pd, v);
-		if(!pd.oldest.update) continue;
+		if(!pd.newest.update) continue;
 
-		if((s = (int)pd.oldest.sec) != sec){
+		if((s = (int)pd.newest.sec) != sec){
 			sec = s;
 			fprintf(stderr, "%d sec   \r", sec);
 		}
 
-		if(pd.oldest.sec < 0) continue;
+		if(pd.newest.sec < 0) continue;
 
 		if(show) show_spectre(&pd, ac, av);
 		if(midi) midi_out(&pd);
diff -urN midi_prog-/util.c midi_prog/util.c
--- midi_prog-/util.c	Tue Aug 25 00:00:00 2015
+++ midi_prog/util.c	Fri Aug 28 00:00:00 2015
@@ -1,11 +1,19 @@
 #include "util.h"
 
+void
+opt_show(int ac, char **av)
+{
+	int i;
+	fprintf(stderr, "ac=%d\n", ac);
+	for(i=0; i<ac; i++) fprintf(stderr, "av[%d]='%s'\n", i, av[i]);
+}
+
 int
 opt_idx(char *key, int ac, char **av)
 {
 	int i;
 
-	for(i=1; i<ac; i++) if(strcmp(av[i], key) == 0) return i;
+	for(i=0; i<ac; i++) if(strcmp(av[i], key) == 0) return i;
 	return -1;
 }
 
@@ -41,6 +49,7 @@
 line_to_ac_av(char *line, int *ac, char **av)
 {
 	int i, n = *ac;
+	if(line) line = strdup(line);
 	for(i=0; i<n && (av[i] = strtok(line, " \t\n")) != NULL; i++, line = NULL);
 	*ac = i;
 }
@@ -151,6 +160,36 @@
 	if(fn == NULL) return NULL;
 	if(strcmp(fn, "-") == 0) return strcmp(mode, "r") == 0 ? stdin : stdout;
 	return fopen(fn, mode);
+}
+
+void
+chatt_init(struct chatt *ct, double lmt_sec)
+{
+	ct->lmt_sec = lmt_sec;
+	ct->sec = 0;
+	ct->chg_try_sec = -1;
+	ct->onoff = 0;
+}
+
+int
+chatt_add(struct chatt *ct, double sec, int onoff)
+{
+	if(onoff == ct->onoff){
+		ct->chg_try_sec = -1;
+		return 0;
+	}
+	if(sec - ct->sec < ct->lmt_sec) return 0;
+
+	if(ct->chg_try_sec < 0){
+		ct->chg_try_sec = sec;
+		return 0;
+	}
+	if(sec - ct->chg_try_sec < ct->lmt_sec) return 0;	
+
+	ct->sec = ct->chg_try_sec;
+	ct->onoff = onoff;
+	ct->chg_try_sec = -1;
+	return 1;
 }
 
 /* EOF */
diff -urN midi_prog-/util.h midi_prog/util.h
--- midi_prog-/util.h	Tue Aug 25 00:00:00 2015
+++ midi_prog/util.h	Fri Aug 28 00:00:00 2015
@@ -20,6 +20,7 @@
 #define MAX(a, b)		( (a) > (b) ? (a) : (b) )
 #define MIN(a, b)		( (a) < (b) ? (a) : (b) )
 
+void opt_show(int ac, char **av);
 int opt_idx(char *key, int ac, char **av);
 char *opt_str(char *key, int ac, char **av, char *def);
 int opt_int(char *key, int ac, char **av, int def);
@@ -46,5 +47,14 @@
 int dbl_max_idx(double *p, int next_bytes, int n, double *ret_v);
 
 FILE *fp_get(char *key, int ac, char **av, char *def_fn, char *mode);
+
+
+struct chatt{
+	double lmt_sec, sec, chg_try_sec;
+	int onoff;
+};
+
+void chatt_init(struct chatt *ct, double lmt_sec);
+int chatt_add(struct chatt *ct, double sec, int onoff);
 
 #endif
diff -urN midi_prog-/voco.c midi_prog/voco.c
--- midi_prog-/voco.c	Tue Aug 25 00:00:00 2015
+++ midi_prog/voco.c	Fri Aug 28 00:00:00 2015
@@ -98,11 +98,11 @@
 
 	out_init(&otr, ac, av);
 	otr.fp = fp_get("-o", ac, av, "-", "w");
-	in_carrier = in_voice = otr;
-	if((in_carrier.fp = fp_get("-carrier", ac, av, NULL, "r")) == NULL){
+	in_init(&in_carrier, ac, av, "-carrier");
+	if(in_carrier.fp == NULL){
 		vco_init(&vco, ac, av);
 	}
-	in_voice.fp = fp_get("-voice", ac, av, NULL, "r");
+	in_init(&in_voice, ac, av, "-voice");
 
 	if((voco_inf = malloc(sizeof(*voco_inf) * band.n)) == NULL) ERR("No Mem");
 	for(i=0; i<band.n; i++) voco_init(&voco_inf[i], ac, av, i);