From 178afb10dbdb17bb848a1f7778f2e56b85a83551 Mon Sep 17 00:00:00 2001
From: Yury Popov <git@phoenix.dj>
Date: Mon, 7 Nov 2022 15:17:01 +0300
Subject: [PATCH] Flush sonic stream on rate reset

---
 src/libespeak-ng/wavegen.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/libespeak-ng/wavegen.c b/src/libespeak-ng/wavegen.c
index e1695a0e..cc9d9dd4 100644
--- a/src/libespeak-ng/wavegen.c
+++ b/src/libespeak-ng/wavegen.c
@@ -1369,6 +1369,12 @@ static int WavegenFill2()
 #if HAVE_SONIC_H
 		case WCMD_SONIC_SPEED:
 			sonicSpeed = (double)q[1] / 1024;
+			if (sonicSpeedupStream && (sonicSpeed <= 1.0)) {
+				sonicFlushStream(sonicSpeedupStream);
+				int length = (out_end - out_ptr);
+				length = sonicReadShortFromStream(sonicSpeedupStream, (short*)out_ptr, length/2);
+				out_ptr += length * 2;
+			}
 			break;
 #endif
 		}