* 8. Stop the player <br>
* 9. Destroy a handle <br>
* The TTS API also notifies you (by callback mechanism) when the state of TTS is changed,
- * utterance is started and completed, default voice is changed or an error occured.
+ * utterance is started and completed, default voice is changed or an error occurred.
* An application should register callback functions: tts_state_changed_cb(), tts_utterance_started_cb(),
* tts_utterance_completed_cb(), tts_default_voice_changed_cb(), tts_error_cb(), tts_engine_changed_cb().
*
* The following table shows previous state and post state of main function.
* It can be known what precondition is and which synchronous type is.
* Please check both previous state and post state from the table carefully.
- * In case of tts_prepare() function, state doesn't be changed at once, but acynchronously.
+ * In case of tts_prepare() function, state doesn't be changed at once, but asynchronously.
* From the above state diagram, you can see dotted line as asynchronous api.
* In this case, the state changed callback is only way to know state transition as ready.
* <table>