diff --git a/source/games/duke/src/actors.cpp b/source/games/duke/src/actors.cpp
index 195dc35da..c5901ab9b 100644
--- a/source/games/duke/src/actors.cpp
+++ b/source/games/duke/src/actors.cpp
@@ -309,7 +309,7 @@ void movecyclers(void)
 		auto sect = c->sector;
 
 		int shade = c->shade2;
-		int j = shade + bsin(c->lotag, -10);
+		int j = shade + int(BobVal(c->lotag) * 16);
 		int cshade = c->shade1;
 
 		if (j < cshade) j = cshade;
@@ -1296,7 +1296,7 @@ void bounce(DDukeActor* actor)
 
 void movetongue(DDukeActor *actor, int tongue, int jaw)
 {
-	actor->temp_data[0] = bsin(actor->temp_data[1], -9);
+	actor->temp_data[0] = int(BobVal(actor->temp_data[1]) * 32);
 	actor->temp_data[1] += 32;
 	if (actor->temp_data[1] > 2047)
 	{
@@ -4233,7 +4233,7 @@ void handle_se26(DDukeActor* actor)
 	double zvel = actor->vel.Z;
 
 	actor->vel.X = 2;
-	DVector2 vect = 2 * actor->spr.angle.ToVector(); // was: (32 * bsin) >> 14
+	DVector2 vect = 2 * actor->spr.angle.ToVector(); // was: (32 * b sin) >> 14
 
 	actor->spr.shade++;
 	if (actor->spr.shade > 7)
diff --git a/source/games/duke/src/actors_d.cpp b/source/games/duke/src/actors_d.cpp
index fdbb6e297..0eba74741 100644
--- a/source/games/duke/src/actors_d.cpp
+++ b/source/games/duke/src/actors_d.cpp
@@ -2217,8 +2217,9 @@ static void greenslime(DDukeActor *actor)
 				actor->temp_data[3] = 1;
 		}
 
-		actor->spr.xrepeat = 20 + bsin(actor->temp_data[1], -13);
-		actor->spr.yrepeat = 15 + bsin(actor->temp_data[1], -13);
+		int add = int(BobVal(actor->temp_data[1]) * 2);
+		actor->spr.xrepeat = 20 + add;
+		actor->spr.yrepeat = 15 + add;
 		actor->spr.pos.XY() = ps[p].pos.XY() + ps[p].angle.ang.ToVector() * 8;
 		return;
 	}
diff --git a/source/games/duke/src/animatesprites_d.cpp b/source/games/duke/src/animatesprites_d.cpp
index b9d38b142..e4db6c4fb 100644
--- a/source/games/duke/src/animatesprites_d.cpp
+++ b/source/games/duke/src/animatesprites_d.cpp
@@ -232,7 +232,7 @@ void animatesprites_d(tspriteArray& tsprites, const DVector2& viewVec, DAngle vi
 			t->pos.Z -= 4;
 			break;
 		case CRYSTALAMMO:
-			t->shade = bsin(PlayClock << 4, -10);
+			t->shade = int(BobVal(PlayClock << 4) * 16);
 			continue;
 		case VIEWSCREEN:
 		case VIEWSCREEN2:
diff --git a/source/games/duke/src/animatesprites_r.cpp b/source/games/duke/src/animatesprites_r.cpp
index 079c471c1..09d7c3847 100644
--- a/source/games/duke/src/animatesprites_r.cpp
+++ b/source/games/duke/src/animatesprites_r.cpp
@@ -226,7 +226,7 @@ void animatesprites_r(tspriteArray& tsprites, const DVector2& viewVec, DAngle vi
 			t->pos.Z -= 4;
 			break;
 		case CRYSTALAMMO:
-			t->shade = bsin(PlayClock << 4, -10);
+			t->shade = int(BobVal(PlayClock << 4) * 16);
 			break;
 		case SHRINKSPARK:
 			if (OwnerAc && (OwnerAc->spr.picnum == CHEER || OwnerAc->spr.picnum == CHEERSTAYPUT) && isRRRA())
diff --git a/source/games/duke/src/hudweapon_d.cpp b/source/games/duke/src/hudweapon_d.cpp
index d4d10cb86..8a2e48cdf 100644
--- a/source/games/duke/src/hudweapon_d.cpp
+++ b/source/games/duke/src/hudweapon_d.cpp
@@ -70,9 +70,9 @@ static void displayloogie(player_struct* p, double const interpfrac)
 
 	for (int i = 0; i < p->numloogs; i++)
 	{
-		const double a = fabs(bsinf((loogi + i) * 32., -5));
+		const double a = fabs(BobVal((loogi + i) * 32.) * 512);
 		const double z = 4096. + ((loogi + i) * 512.);
-		const double x = -getavel(p->GetPlayerNum()) + bsinf((loogi + i) * 64., -10);
+		const double x = -getavel(p->GetPlayerNum()) + BobVal((loogi + i) * 64.) * 16;
 
 		hud_drawsprite((p->loogie[i].X + x), (200 + p->loogie[i].Y - y), z - (i << 8), 256 - a, LOOGIE, 0, 0, 2);
 	}
@@ -91,7 +91,7 @@ static bool animatefist(int gs, player_struct* p, double look_anghalf, double lo
 
 	hud_drawsprite(
 		(-fisti + 222 + plravel),
-		(looking_arc + 194 + bsinf((6 + fisti) * 128., -9)),
+		(looking_arc + 194 + BobVal((6 + fisti) * 128.) * 32),
 		clamp(65536. - bcosf(fisti * 64., 2), 40920., 90612.), 0, FIST, gs, fistpal, 2);
 
 	return true;
@@ -236,7 +236,7 @@ void displayweapon_d(int snum, double interpfrac)
 	looking_arc = p->angle.looking_arc(interpfrac);
 	hard_landing *= 8.;
 
-	gun_pos -= fabs(p->GetActor()->spr.xrepeat < 32 ? bsinf(weapon_sway * 4., -9) : bsinf(weapon_sway * 0.5, -10));
+	gun_pos -= fabs(p->GetActor()->spr.xrepeat < 32 ? BobVal(weapon_sway * 4.) * 32 : BobVal(weapon_sway * 0.5) * 16);
 	gun_pos -= hard_landing;
 
 	weapon_xoffset = (160)-90;