diff --git a/audio/5.0/IStreamIn.hal b/audio/5.0/IStreamIn.hal
index d33cfdc..b042960 100644
--- a/audio/5.0/IStreamIn.hal
+++ b/audio/5.0/IStreamIn.hal
@@ -165,4 +165,27 @@
      */
     getActiveMicrophones()
                generates(Result retval, vec<MicrophoneInfo> microphones);
+
+    /**
+     * Specifies the logical microphone (for processing).
+     *
+     * Optional method
+     *
+     * @param Direction constant
+     * @return retval OK if the call is successful, an error code otherwise.
+     */
+    setMicrophoneDirection(MicrophoneDirection direction)
+               generates(Result retval);
+
+    /**
+     * Specifies the zoom factor for the selected microphone (for processing).
+     *
+     * Optional method
+     *
+     * @param the desired field dimension of microphone capture. Range is from -1 (wide angle),
+     * though 0 (no zoom) to 1 (maximum zoom).
+     *
+     * @return retval OK if the call is not successful, an error code otherwise.
+     */
+    setMicrophoneFieldDimension(float zoom) generates(Result retval);
 };
diff --git a/audio/5.0/types.hal b/audio/5.0/types.hal
index 4932367..2c153c6 100644
--- a/audio/5.0/types.hal
+++ b/audio/5.0/types.hal
@@ -221,3 +221,29 @@
      */
     AudioMicrophoneCoordinate               orientation;
 };
+
+/**
+ * Constants used by the HAL to determine how to select microphones and process those inputs in
+ * order to optimize for capture in the specified direction.
+ *
+ * MicrophoneDirection Constants are defined in MicrophoneDirection.java.
+ */
+@export(name="audio_microphone_direction_t", value_prefix="MIC_DIRECTION_")
+enum MicrophoneDirection : int32_t {
+    /**
+     * Don't do any directionality processing of the activated microphone(s).
+     */
+    UNSPECIFIED = 0,
+    /**
+     * Optimize capture for audio coming from the screen-side of the device.
+     */
+    FRONT = 1,
+    /**
+     * Optimize capture for audio coming from the side of the device opposite the screen.
+     */
+    BACK = 2,
+    /**
+     * Optimize capture for audio coming from an off-device microphone.
+     */
+    EXTERNAL = 3,
+};
diff --git a/audio/core/all-versions/default/StreamIn.cpp b/audio/core/all-versions/default/StreamIn.cpp
index ac7c2cb..c66e61d 100644
--- a/audio/core/all-versions/default/StreamIn.cpp
+++ b/audio/core/all-versions/default/StreamIn.cpp
@@ -485,6 +485,27 @@
 }
 #endif
 
+#if MAJOR_VERSION >= 5
+Return<Result> StreamIn::setMicrophoneDirection(MicrophoneDirection direction) {
+    if (mStream->set_microphone_direction == nullptr) {
+        return Result::NOT_SUPPORTED;
+    }
+    return Stream::analyzeStatus(
+            "set_microphone_direction",
+            mStream->set_microphone_direction(
+                    mStream, static_cast<audio_microphone_direction_t>(direction)));
+}
+
+Return<Result> StreamIn::setMicrophoneFieldDimension(float zoom) {
+    if (mStream->set_microphone_field_dimension == nullptr) {
+        return Result::NOT_SUPPORTED;
+    }
+    return Stream::analyzeStatus("set_microphone_field_dimension",
+                                 mStream->set_microphone_field_dimension(mStream, zoom));
+}
+
+#endif
+
 }  // namespace implementation
 }  // namespace CPP_VERSION
 }  // namespace audio
diff --git a/audio/core/all-versions/default/include/core/default/StreamIn.h b/audio/core/all-versions/default/include/core/default/StreamIn.h
index 7a658b3..6209b8f 100644
--- a/audio/core/all-versions/default/include/core/default/StreamIn.h
+++ b/audio/core/all-versions/default/include/core/default/StreamIn.h
@@ -112,7 +112,10 @@
     Return<void> updateSinkMetadata(const SinkMetadata& sinkMetadata) override;
     Return<void> getActiveMicrophones(getActiveMicrophones_cb _hidl_cb) override;
 #endif
-
+#if MAJOR_VERSION >= 5
+    Return<Result> setMicrophoneDirection(MicrophoneDirection direction) override;
+    Return<Result> setMicrophoneFieldDimension(float zoom) override;
+#endif
     static Result getCapturePositionImpl(audio_stream_in_t* stream, uint64_t* frames,
                                          uint64_t* time);