diff --git a/audio_utils/include/audio_utils/primitives.h b/audio_utils/include/audio_utils/primitives.h
index 00b5cd9..64ec6e2 100644
--- a/audio_utils/include/audio_utils/primitives.h
+++ b/audio_utils/include/audio_utils/primitives.h
@@ -44,6 +44,17 @@
  */
 void memcpy_to_i16_from_u8(int16_t *dst, const uint8_t *src, size_t count);
 
+/* Shrink and copy samples from signed 16-bit to unsigned 8-bit offset by 0x80.
+ * Parameters:
+ *  dst     Destination buffer
+ *  src     Source buffer
+ *  count   Number of samples to copy
+ * The destination and source buffers must either be completely separate (non-overlapping), or
+ * they must both start at the same address.  Partially overlapping buffers are not supported.
+ * The conversion is done by truncation, without dithering, so it loses resolution.
+ */
+void memcpy_to_u8_from_i16(uint8_t *dst, const int16_t *src, size_t count);
+
 /* Downmix pairs of interleaved stereo input 16-bit samples to mono output 16-bit samples.
  * Parameters:
  *  dst     Destination buffer
diff --git a/audio_utils/primitives.c b/audio_utils/primitives.c
index bec87e0..af9ab40 100644
--- a/audio_utils/primitives.c
+++ b/audio_utils/primitives.c
@@ -39,6 +39,13 @@
     }
 }
 
+void memcpy_to_u8_from_i16(uint8_t *dst, const int16_t *src, size_t count)
+{
+    while (count--) {
+        *dst++ = (*src++ >> 8) + 0x80;
+    }
+}
+
 void downmix_to_mono_i16_from_stereo_i16(int16_t *dst, const int16_t *src, size_t count)
 {
     while (count--) {