Docs: Formula for headset spec
Bug: 27173358
Change-Id: I0f527bb9dc26569877bbfaaf1daf50ee2eab63fa
diff --git a/src/devices/accessories/headset/specification.jd b/src/devices/accessories/headset/specification.jd
index 2a3435d..08eaf65 100644
--- a/src/devices/accessories/headset/specification.jd
+++ b/src/devices/accessories/headset/specification.jd
@@ -193,7 +193,7 @@
based on the microphone capsule resistance (Rmic) and the equivalent impedance
values (ReqA-ReqD). Use the following formula:</p>
-<p><em>Rn=(Rmic*ReqN) / (ReqN-Rmic)</em></p>
+<p><em>Rn=(Rmic*ReqN) / (Rmic+ReqN)</em></p>
<p>Where R<em>n</em> is the actual resistance of a button, Req<em>N</em> is the
equivalent impedance value of that button (provided), and Rmic is the
