diff --git a/org.budnhead/audio/streams/AudioDomain.cs b/org.budnhead/audio/streams/AudioDomain.cs
new file mode 100644
index 0000000..45ba464
--- /dev/null
+++ b/org.budnhead/audio/streams/AudioDomain.cs
@@ -0,0 +1,9 @@
+using System;
+namespace org.budnhead
+{
+	public enum AudioDomain
+	{
+		TIME,
+		FREQUENCY
+	}
+}
diff --git a/org.budnhead/audio/streams/StreamSegment.cs b/org.budnhead/audio/streams/StreamSegment.cs
new file mode 100644
index 0000000..a6aac72
--- /dev/null
+++ b/org.budnhead/audio/streams/StreamSegment.cs
@@ -0,0 +1,14 @@
+using System;
+namespace org.budnhead
+{
+	public struct StreamSegment
+	{
+		long		sequence;
+		long		timecode;
+
+		AudioDomain	audioDomain;
+
+		float[]		realSamples;
+		float[]		imagSamples;
+	}
+}