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diff --git a/src/3rdparty/resonance-audio/resonance_audio/graph/reflections_node.h b/src/3rdparty/resonance-audio/resonance_audio/graph/reflections_node.h
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+++ b/src/3rdparty/resonance-audio/resonance_audio/graph/reflections_node.h
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+/*
+Copyright 2018 Google Inc. All Rights Reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS-IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+#ifndef RESONANCE_AUDIO_GRAPH_REFLECTIONS_NODE_H_
+#define RESONANCE_AUDIO_GRAPH_REFLECTIONS_NODE_H_
+
+#include <vector>
+
+#include "ambisonics/foa_rotator.h"
+#include "api/resonance_audio_api.h"
+#include "base/audio_buffer.h"
+#include "base/misc_math.h"
+#include "dsp/reflections_processor.h"
+#include "graph/system_settings.h"
+#include "node/processing_node.h"
+
+namespace vraudio {
+
+// Node that accepts a single mono buffer as input and outputs an ambisonically
+// encoded sound field buffer of the mix of all the early room reflections.
+class ReflectionsNode : public ProcessingNode {
+ public:
+  // Initializes |ReflectionsNode| class.
+  //
+  // @param system_settings Global system configuration.
+  explicit ReflectionsNode(const SystemSettings& system_settings);
+
+  // Updates the reflections. Depending on whether to use RT60s for reverb
+  // according to the global system settings, the reflections are calculated
+  // either by the current room properties or the proxy room properties.
+  void Update();
+
+ protected:
+  // Implements ProcessingNode.
+  const AudioBuffer* AudioProcess(const NodeInput& input) override;
+
+ private:
+  const SystemSettings& system_settings_;
+
+  // First-order-ambisonics rotator to be used to rotate the reflections with
+  // respect to the listener's orientation.
+  FoaRotator foa_rotator_;
+
+  // Processes and encodes reflections into an ambisonic buffer.
+  ReflectionsProcessor reflections_processor_;
+
+  // Most recently updated reflection properties.
+  ReflectionProperties reflection_properties_;
+
+  // Most recently updated listener position.
+  WorldPosition listener_position_;
+
+  size_t num_frames_processed_on_empty_input_;
+
+  // Ambisonic output buffer.
+  AudioBuffer output_buffer_;
+
+  // Silence mono buffer to render reflection tails during the absence of input
+  // buffers.
+  AudioBuffer silence_mono_buffer_;
+};
+
+}  // namespace vraudio
+
+#endif  // RESONANCE_AUDIO_GRAPH_REFLECTIONS_NODE_H_