ref: 7918ac13a8ea6e897eff8de77ccad46c67a9a645
parent: 5b6fe646922fb6158e8cda654782b66f75f75e4d
author: Ralph Giles <[email protected]>
date: Fri May 24 21:16:23 EDT 2013
Fix Ogg draft formatting. Previous markup was invalid.
--- a/doc/draft-ietf-codec-oggopus.xml
+++ b/doc/draft-ietf-codec-oggopus.xml
@@ -1168,9 +1168,13 @@
to 40) LPC analysis is performed on a window near the end of the signal.
The last N samples are used as memory to an infinite impulse response (IIR)
filter.
+</t>
+<figure align="center">
+<preamble>
The filter is then applied on a zero input to extrapolate the end of the signal.
Let a(k) be the kth LPC coefficient and x(n) be the nth sample of the signal,
each new sample past the end of the signal is computed as:
+</preamble>
<artwork align="center"><![CDATA[
N
---
@@ -1179,6 +1183,8 @@
---
k=1
]]></artwork>
+</figure>
+<t>
The process is repeated independently for each channel.
It is possible to extend the beginning of the signal by applying the same
process backward in time.
@@ -1211,6 +1217,8 @@
the encoder.</t>
</list>
</t>
+</section>
+
</section>
<section anchor="implementation" title="Implementation Status">