Consider the following points when you try to adjust the Kinect microphone or configure your play space:

The Kinect microphone is designed to hear everything in your play space. However, things like appliances, speakers, and fans, or lots of people can interfere with the Kinect microphone. In these scenarios, Kinect may not recognize precise voice commands.
Make sure Kinect is plugged in and turned on. The Xbox logo will be lit on when the sensor is on. If your sensor wont turn on, try the troubleshooting steps in Kinect sensor wont turn on.
If you are having trouble with a specific game or app, view the tutorial or try to calibrate the Kinect sensor from within the game or app.
If you want to learn the available voice commands, please see Xbox One Kinect voice commands.

If you are having trouble getting your Kinect sensor to recognize voice commands, try the following.

Verify that your Kinect sensor is on

Press the Menu button on your controller, select Settings, then select Kinect.

Verify that the Kinect on setting is selected. If it isnt, select Kinect on to turn the sensor on.

Calibrate the Kinect microphone

To calibrate the microphone, follow these steps:

Step 1: Press the Menu button on your controller, select Settings, then select Kinect.

Step 2: Select Kinect doesnt hear me.

Step 3: On the Lets check your audio screen, select Start audio check.
Before you start the audio check:

Make sure that our speakers are turned on and the volume is louder than normal.
Make sure that he room is quiet.
If you use a home theater system, make sure that the system is on and set louder than normal.

Step 4: During the audio check, the sensor checks the background noise in your play space. If there is not too much background noise, the system automatically goes to the next step. If there is too much background noise, minimize the background noise and then run the audio check again.

Step 5: During the audio check, the sensor plays several tones to determine speaker placement. The system displays a screen when it calibrates the microphone. This may take a few seconds.

Step 6: Verify that a success screen appears that indicates that the audio is set up correctly.