diff --git a/chunk.h b/chunk.h
new file mode 100644
index 00000000..6266c365
--- /dev/null
+++ b/chunk.h
@@ -0,0 +1,20 @@
+#ifndef CHUNK_H
+#define CHUNK_H
+
+#define MS (50)
+//44100 / 20 = 2205
+#define SAMPLE_RATE (44100)
+#define SIZE (SAMPLE_RATE*4*MS/1000)
+int bufferMs;
+#define FRAMES_PER_BUFFER  (SIZE/4)
+
+
+struct Chunk
+{
+	int32_t tv_sec;
+	int32_t tv_usec;
+	char payload[SIZE];
+};
+
+#endif
+
diff --git a/client.cpp b/client.cpp
index 79768d8d..753bc1f5 100644
--- a/client.cpp
+++ b/client.cpp
@@ -17,23 +17,9 @@
 #include <mutex>
 #include <condition_variable>
 #include <portaudio.h>
+#include "chunk.h"
 
 
-#define MS (50)
-//44100 / 20 = 2205
-#define SAMPLE_RATE (44100)
-#define SIZE (SAMPLE_RATE*4*MS/1000)
-int bufferMs;
-#define FRAMES_PER_BUFFER  (SIZE/4)
-
-
-struct Chunk
-{
-	int32_t tv_sec;
-	int32_t tv_usec;
-	char payload[SIZE];
-};
-
 std::deque<Chunk*> chunks;
 std::deque<int> timeDiffs;
 std::mutex mtx;