--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libtest/robewrite.c	Wed Dec 14 23:11:20 2022 +0000
@@ -0,0 +1,22 @@
+/*
+ * Here we implement our PCM write helper function for "robe" format.
+ */
+
+#include <stdio.h>
+#include <stdint.h>
+#include "robewrite.h"
+
+void write_pcm_to_robe(FILE *outf, const int16_t *pcm)
+{
+	uint8_t bytes[320], *dp;
+	int16_t samp;
+	unsigned n;
+
+	dp = bytes;
+	for (n = 0; n < 160; n++) {
+		samp = pcm[n];
+		*dp++ = (samp >> 8) & 0xFF;
+		*dp++ = samp & 0xFF;
+	}
+	fwrite(bytes, 2, 160, outf);
+}