+<NAME>GstAudioEcho::surround-delay</NAME>
+<TYPE>gboolean</TYPE>
+<RANGE></RANGE>
+<FLAGS>rw</FLAGS>
+<NICK>Enable Surround Delay</NICK>
+<BLURB>Delay Surround Channels when TRUE instead of applying an echo effect.</BLURB>
+<DEFAULT>FALSE</DEFAULT>
+</ARG>
+
+<ARG>
+<NAME>GstAudioEcho::surround-mask</NAME>
+<TYPE>guint64</TYPE>
+<RANGE>>= 1</RANGE>
+<FLAGS>rw</FLAGS>
+<NICK>Surround Mask</NICK>
+<BLURB>A bitmask of channels that are considered surround and delayed when surround-delay = TRUE.</BLURB>
+<DEFAULT>18446744073709551612</DEFAULT>
+</ARG>
+
+<ARG>