The Mystery of the Pixel 9's Top Opening

Google’s Pixel phones, like the Pixel 9, are known for their performance and camera capabilities. However, a frequently asked question among users concerns a small hole located at the top of the device.

It's a Microphone, Not a Sensor

Many Pixel 9 owners have questioned the purpose of this tiny opening. Contrary to speculation, it isn’t a sensor or a hidden button. It’s actually one of three microphones integrated into the phone’s design.

Microphone Placement on the Pixel 9

Besides the top microphone, the Pixel 9 also features a microphone on the bottom of the phone and a rear-facing microphone near the camera lenses. This trio works together to deliver a superior audio experience.

Noise Cancellation and Audio Enhancement

While Google hasn’t officially detailed the top microphone’s function, users and online communities like Reddit believe it plays a key role in noise cancellation. The microphone captures ambient sounds and compares them to the input from the other two microphones.

This comparison allows the Pixel 9 to utilize noise-isolating technology, effectively reducing background noise during phone and video calls. This results in clearer communication for both parties.

Spatial Audio Capabilities

The top microphone also contributes to the Pixel 9’s Spatial Audio feature. It works in conjunction with the other microphones to capture and upmix stereo audio.

Creating a 360-Degree Sound Experience

By analyzing the directionality of environmental sounds, the Pixel 9 creates a wider, more immersive 360-degree sound experience. This goes beyond traditional surround sound, offering a more realistic and engaging audio landscape. Spatial Audio is best experienced with Pixel Buds Pro.

Enabling Spatial Audio and Head Tracking

Not all platforms fully support Spatial Audio, and some settings may need adjustment. For example, Netflix requires Pixel Buds Pro and enabled Head Tracking to deliver Spatial Audio.

How to Enable Head Tracking

To enable Head Tracking, navigate to Settings > Connected Devices > Pixel Buds Pro > Settings > Spatial Audio, and toggle on Head tracking.