diff --git a/Source/synth/lfo.c b/Source/synth/lfo.c
index f73aa4e..d0e60e1 100644
--- a/Source/synth/lfo.c
+++ b/Source/synth/lfo.c
@@ -129,7 +129,6 @@ void LFO_Init(lfo_t *pObj, synth_float_t fs)
 	pObj->out = 0;
 	pObj->sqr = 0;
 	pObj->tri = 0;
-	pObj->gain = 1;
 	pObj->offset = 0.5;
 
 	LFO_Reset(pObj, 0);
@@ -173,7 +172,6 @@ void LFO_SetFS(lfo_t *pObj, synth_float_t fs)
 
 void LFO_Reset(lfo_t *pObj, synth_float_t initial_phase)
 {
-	pObj->a = 0.5;
 	pObj->out = 0;
 	pObj->sqr = 0;
 	pObj->tri = 0;
@@ -222,8 +220,7 @@ void LFO_Param2Set(lfo_t *pObj, UINT32 type, synth_float_t value)
 
 		case LFO_PARAM2_SYMMETRY:
 			pObj->param[type] = value;
-			pObj->gain = 1;
-			pObj->offset = 0.5 *(1 + value) - 1;
+			pObj->offset = 0.5 *value;
 			break;
 
 		default:
@@ -268,8 +265,9 @@ synth_float_t* LFO_ProcessDataV(lfo_t *pObj, UINT32 len)
 		for (i=i0; i< len; i++)
 		{
 			sync_result_t sync_result = Sync_process(&pObj->sync, pObj->omega);
+			synth_float_t y = 2*sync_result.phase - 1.0;
 			
-			in = sync_result.phase + pObj->offset;
+			in = 0.5*y + pObj->offset;
 			pObj->out = pObj->smooth_a*pObj->out + pObj->smooth_b*in;
 			out = pObj->out;
 			if (pObj->smooth_is_negative)
@@ -292,8 +290,9 @@ synth_float_t* LFO_ProcessDataV(lfo_t *pObj, UINT32 len)
 		for (i=i0; i< len; i++)
 		{
 			sync_result_t sync_result = Sync_process(&pObj->sync, pObj->omega);
-
-			in = (1-sync_result.phase) + pObj->offset;
+			synth_float_t y = 2*sync_result.phase - 1.0;
+			
+			in = -0.5*y + pObj->offset;
 			pObj->out = pObj->smooth_a*pObj->out + pObj->smooth_b*in;
 			out = pObj->out;
 			if (pObj->smooth_is_negative)
@@ -377,7 +376,7 @@ synth_float_t* LFO_ProcessDataV(lfo_t *pObj, UINT32 len)
 			sync_result_t sync_result = Sync_process(&pObj->sync, pObj->omega);
 			synth_float_t y = sin(2*M_PI*sync_result.phase);
 
-			in = y + pObj->a + pObj->offset;
+			in = 0.5*y + pObj->offset;
 			pObj->out = pObj->smooth_a*pObj->out + pObj->smooth_b*in;
 			out = pObj->out;
 			if (pObj->smooth_is_negative)
@@ -401,7 +400,7 @@ synth_float_t* LFO_ProcessDataV(lfo_t *pObj, UINT32 len)
 			sync_result_t sync_result = Sync_process(&pObj->sync, pObj->omega);
 			synth_float_t y = sin(2*M_PI*sync_result.phase);
 
-			in = (1-(y+pObj->a)) + pObj->offset;
+			in = -0.5*y + pObj->offset;
 			pObj->out = pObj->smooth_a*pObj->out + pObj->smooth_b*in;
 			out = pObj->out;
 			if (pObj->smooth_is_negative)
@@ -425,7 +424,7 @@ synth_float_t* LFO_ProcessDataV(lfo_t *pObj, UINT32 len)
 			sync_result_t sync_result = Sync_process(&pObj->sync, pObj->omega);
 			synth_float_t y = cos(2*M_PI*sync_result.phase);
 
-			in = y+pObj->a + pObj->offset;
+			in = 0.5*y + pObj->offset;
 			pObj->out = pObj->smooth_a*pObj->out + pObj->smooth_b*in;
 			out = pObj->out;
 			if (pObj->smooth_is_negative)
@@ -449,7 +448,7 @@ synth_float_t* LFO_ProcessDataV(lfo_t *pObj, UINT32 len)
 			sync_result_t sync_result = Sync_process(&pObj->sync, pObj->omega);
 			synth_float_t y = cos(2*M_PI*sync_result.phase);
 
-			in = (1-(y+pObj->a)) + pObj->offset;
+			in = -0.5*y + pObj->offset;
 			pObj->out = pObj->smooth_a*pObj->out + pObj->smooth_b*in;
 			out = pObj->out;
 			if (pObj->smooth_is_negative)
@@ -472,9 +471,9 @@ synth_float_t* LFO_ProcessDataV(lfo_t *pObj, UINT32 len)
 		for (i=i0; i< len; i++)
 		{
 			sync_result_t sync_result = Sync_process(&pObj->sync, pObj->omega);
-			pObj->sqr = (int)(sync_result.phase < 0.5);
+			synth_float_t y = 2*(synth_float_t)(sync_result.phase < 0.5) - 1.0;
 
-			in = (synth_float_t)pObj->sqr + pObj->offset;
+			in = 0.5*y + pObj->offset;
 			pObj->out = pObj->smooth_a*pObj->out + pObj->smooth_b*in;
 			out = pObj->out;
 			if (pObj->smooth_is_negative)
@@ -497,9 +496,9 @@ synth_float_t* LFO_ProcessDataV(lfo_t *pObj, UINT32 len)
 		for (i=i0; i< len; i++)
 		{
 			sync_result_t sync_result = Sync_process(&pObj->sync, pObj->omega);
-			pObj->sqr = (int)(sync_result.phase < 0.5);
+			synth_float_t y = 2*(synth_float_t)(sync_result.phase < 0.5) - 1.0;
 
-			in = (1-((synth_float_t)pObj->sqr)) + pObj->offset;
+			in = -0.5*y + pObj->offset;
 			pObj->out = pObj->smooth_a*pObj->out + pObj->smooth_b*in;
 			out = pObj->out;
 			if (pObj->smooth_is_negative)
@@ -522,12 +521,13 @@ synth_float_t* LFO_ProcessDataV(lfo_t *pObj, UINT32 len)
 		for (i=i0; i< len; i++)
 		{
 			sync_result_t sync_result = Sync_process(&pObj->sync, pObj->omega);
+			synth_float_t y = 2*(1-sync_result.phase) - 1.0;
 			if (sync_result.phase < 0.5)
-				pObj->tri = 2*sync_result.phase;
-			else
-				pObj->tri = 2*(1-sync_result.phase);
-
-			in = (synth_float_t)pObj->tri + pObj->offset;
+			{
+				y = 2*sync_result.phase - 1.0;
+			}
+			
+			in = 0.5*y + pObj->offset;
 			pObj->out = pObj->smooth_a*pObj->out + pObj->smooth_b*in;
 			out = pObj->out;
 			if (pObj->smooth_is_negative)
@@ -550,12 +550,13 @@ synth_float_t* LFO_ProcessDataV(lfo_t *pObj, UINT32 len)
 		for (i=i0; i< len; i++)
 		{
 			sync_result_t sync_result = Sync_process(&pObj->sync, pObj->omega);
+			synth_float_t y = 2*(1-sync_result.phase) - 0.5;
 			if (sync_result.phase < 0.5)
-				pObj->tri = 2*sync_result.phase;
-			else
-				pObj->tri = 2*(1-sync_result.phase);
-
-			in = (1-((synth_float_t)pObj->tri)) + pObj->offset;
+			{
+				y = 2*sync_result.phase - 0.5;
+			}
+			
+			in = -0.5*y + pObj->offset;
 			pObj->out = pObj->smooth_a*pObj->out + pObj->smooth_b*in;
 			out = pObj->out;
 			if (pObj->smooth_is_negative)
diff --git a/Source/synth/lfo.h b/Source/synth/lfo.h
index 74d0430..c8359a5 100644
--- a/Source/synth/lfo.h
+++ b/Source/synth/lfo.h
@@ -83,7 +83,7 @@ typedef struct _slfo_t
 {
 	synth_float_t param[LFO_NUM_PARAMS];
 	synth_float_t omega, fs;
-	synth_float_t a, b, out, sh_sample, tri;
+	synth_float_t out, sh_sample, tri;
 	int freq_update_req, sqr;
 	synth_float_t *pOut;
 	UINT32 bufsize;
@@ -91,7 +91,7 @@ typedef struct _slfo_t
 	synth_float_t smooth_a, smooth_b;
 	UINT32 smooth_is_negative;
 	synth_float_t delay_x, delay_dx, attack_y, attack_a;
-	synth_float_t gain, offset;
+	synth_float_t offset;
 	sync_t sync;
 
 } lfo_t;