diff --git a/src/emu/sound/tms5110.c b/src/emu/sound/tms5110.c
index 0b4e1362be3..2ba0e140a01 100644
--- a/src/emu/sound/tms5110.c
+++ b/src/emu/sound/tms5110.c
@@ -395,10 +395,12 @@ void tms5110_device::process(INT16 *buffer, unsigned int size)
 	/* loop until the buffer is full or we've stopped speaking */
 	while ((size > 0) && m_speaking_now)
 	{
-		/* if it is the appropriate time to update the old energy/pitch idxes,
+		/* if it is the appropriate time to update the old energy/pitch indices,
 		 * i.e. when IP=7, PC=12, T=17, subcycle=2, do so. Since IP=7 PC=12 T=17
 		 * is JUST BEFORE the transition to IP=0 PC=0 T=0 sybcycle=(0 or 1),
-		 * which happens 4 T-cycles later), we change on the latter.*/
+		 * which happens 4 T-cycles later), we change on the latter.
+		 * The indices are updated here ~12 PCs before the new frame is applied.
+		 */
 		if ((m_IP == 0) && (m_PC == 0) && (m_subcycle < 2))
 		{
 			m_OLDE = (m_new_frame_energy_idx == 0);
@@ -429,13 +431,32 @@ void tms5110_device::process(INT16 *buffer, unsigned int size)
 #ifdef DEBUG_GENERATION
 				fprintf(stderr,"tms5110_process: processing frame: talk status = 0 caused by stop frame or buffer empty, halting speech.\n");
 #endif
-				m_speaking_now = 0; // finally halt speech
-				goto empty;
+				if (m_speaking_now == 1) // we're done, set all coeffs to idle state but keep going for a bit...
+				{
+					m_new_frame_energy_idx = 0;
+					m_new_frame_pitch_idx = 0;
+					for (i = 0; i < 4; i++)
+						m_new_frame_k_idx[i] = 0;
+					for (i = 4; i < 7; i++)
+						m_new_frame_k_idx[i] = 0xF;
+					for (i = 7; i < m_coeff->num_k; i++)
+						m_new_frame_k_idx[i] = 0x7;
+					m_speaking_now = 2; // wait 8 extra interp periods before shutting down so we can interpolate everything to zero state
+				}
+				else // m_speaking_now == 2 // now we're really done.
+				{
+					m_speaking_now = 0; // finally halt speech
+					goto empty;
+				}
+				//m_speaking_now = 0; // finally halt speech
+				//goto empty;
 			}
+			
 
 
-			/* Parse a new frame into the new_target_energy, new_target_pitch and new_target_k[] */
-			parse_frame();
+			/* Parse a new frame into the new_target_energy, new_target_pitch and new_target_k[],
+			 * but only if we're not just about to end speech */
+			if (m_speaking_now == 1) parse_frame();
 #ifdef DEBUG_PARSE_FRAME_DUMP
 			fprintf(stderr,"\n");
 #endif
diff --git a/src/emu/sound/tms5220.c b/src/emu/sound/tms5220.c
index c948640972a..a78565c6a5b 100644
--- a/src/emu/sound/tms5220.c
+++ b/src/emu/sound/tms5220.c
@@ -749,10 +749,12 @@ void tms5220_device::process(INT16 *buffer, unsigned int size)
 	/* loop until the buffer is full or we've stopped speaking */
 	while ((size > 0) && m_speaking_now)
 	{
-		/* if it is the appropriate time to update the old energy/pitch idxes,
+		/* if it is the appropriate time to update the old energy/pitch indices,
 		 * i.e. when IP=7, PC=12, T=17, subcycle=2, do so. Since IP=7 PC=12 T=17
 		 * is JUST BEFORE the transition to IP=0 PC=0 T=0 sybcycle=(0 or 1),
-		 * which happens 4 T-cycles later), we change on the latter.*/
+		 * which happens 4 T-cycles later), we change on the latter.
+		 * The indices are updated here ~12 PCs before the new frame is applied.
+		 */
 		if ((m_IP == 0) && (m_PC == 0) && (m_subcycle < 2))
 		{
 			m_OLDE = (m_new_frame_energy_idx == 0);
@@ -786,13 +788,29 @@ void tms5220_device::process(INT16 *buffer, unsigned int size)
 #ifdef DEBUG_GENERATION
 				fprintf(stderr,"tms5220_process: processing frame: talk status = 0 caused by stop frame or buffer empty, halting speech.\n");
 #endif
-				m_speaking_now = 0; // finally halt speech
-				goto empty;
+				if (m_speaking_now == 1) // we're done, set all coeffs to idle state but keep going for a bit...
+				{
+					m_new_frame_energy_idx = 0;
+					m_new_frame_pitch_idx = 0;
+					for (i = 0; i < 4; i++)
+						m_new_frame_k_idx[i] = 0;
+					for (i = 4; i < 7; i++)
+						m_new_frame_k_idx[i] = 0xF;
+					for (i = 7; i < m_coeff->num_k; i++)
+						m_new_frame_k_idx[i] = 0x7;
+					m_speaking_now = 2; // wait 8 extra interp periods before shutting down so we can interpolate everything to zero state
+				}
+				else // m_speaking_now == 2 // now we're really done.
+				{
+					m_speaking_now = 0; // finally halt speech
+					goto empty;
+				}
 			}
 
 
-			/* Parse a new frame into the new_target_energy, new_target_pitch and new_target_k[] */
-			parse_frame();
+			/* Parse a new frame into the new_target_energy, new_target_pitch and new_target_k[],
+			 * but only if we're not just about to end speech */
+			if (m_speaking_now == 1) parse_frame();
 #ifdef DEBUG_PARSE_FRAME_DUMP
 			fprintf(stderr,"\n");
 #endif