Updated AudioEmitter (markdown)

AudioEmitter.md

@@ -30,7 +30,7 @@ In addition to setting the members of ``X3DAUDIO_EMITTER`` directly, these helpe
 * **SetOrientation** (XMVECTOR forward, XMVECTOR up) or (XMFLOAT3 forward, XMFLOAT3 up)
 * **SetOrientationFromQuaternion** (XMVECTOR): Sets the OrientFront/OrientTop of the emitter.
 
-* **Update** (XMVECTOR newPos, XMVECTOR upDir, float dt): Computes a direction and velocity for the emitter based on the existing Position, the newPos, and the provided delta time (i.e. Δt). This updates the OrientFront/OrientTop to match, and then sets the Position to the newPos. If dt is 0, the update is skipped.
+* **Update** (XMVECTOR newPos, XMVECTOR upDir, float dt): Computes a direction and velocity for the emitter based on the current Position value, the new position, and the provided delta time (i.e. Δt). This updates the OrientFront/OrientTop to match, and then sets the Position to the new position. If dt is 0, the update is skipped.
 
 > You must use a distinct instance of ``AudioEmitter`` for each active 3D sound if using the **Update** method. Otherwise, if you reuse the emitter instance for multiple sounds you need to explicitly initialize both the position and velocity before each ``Apply3D`` call.