From 1a4590098c25d199d2836055be12fc1113e007fb Mon Sep 17 00:00:00 2001
From: "Reece H. Dunn" <msclrhd@gmail.com>
Date: Sat, 18 Jan 2020 15:58:05 +0000
Subject: [PATCH] Fix using the mbrola voices in Windows Subsystem for Linux.

---
 src/libespeak-ng/mbrowrap.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/libespeak-ng/mbrowrap.c b/src/libespeak-ng/mbrowrap.c
index 71d6bb19..0fba949e 100644
--- a/src/libespeak-ng/mbrowrap.c
+++ b/src/libespeak-ng/mbrowrap.c
@@ -527,6 +527,11 @@ static int init_mbrola(char *voice_path)
 	if (error)
 		return -1;
 
+	// Allow mbrola time to start when running on Windows Subsystem for
+	// Linux (WSL). Otherwise, the receive_from_mbrola call to read the
+	// wav header from mbrola will fail.
+	usleep(100);
+
 	result = send_to_mbrola("#\n");
 	if (result != 2) {
 		stop_mbrola();