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Noise-cancelling audio devices use a built-in microphone to analyse the ambient sound waves around you and generate the opposite sound waves to reduce surrounding sound. Noise-cancelling devices have a built-in microphone which produces the opposite reversed sound waves to neutralise surrounding noise.

Noise-cancelling audio devices use a built-in microphone to analyse the ambient sound waves around you and generate the opposite sound waves to reduce surrounding sound. Noise-cancelling devices have a built-in microphone which produces the opposite reversed sound waves to neutralise surrounding noise. Noise cancellation works best when the ambient sound around you is constant and around the low to medium pitch range. Balanced soundwaves when ambient sound and noise cancelling waves match

Now consider the fluctuating pitch levels when you speak. The sudden changes in pitch occur too frequently and make it difficult for any noise-cancelling audio device to analyse and process these differences. Therefore, you hear some noises whilst others are cancelled out.

Noise-cancellation offers an enhanced listening experience by cancelling out interfering external sounds.

However, remember the following:

The noise cancelling effect may not be pronounced in a tranquil environment, or some sound may be heard. If there is little ambient noise, it is even advisable not to switch on the NC function, as it needs ambient input to function optimally.

Noise cancellation doesn't transfer during telephone calls. Although it protects the headphones user from the surrounding noise, it does not apply to the receiver of the call: they will potentially hear background noise.

Depending on how you wear the headset, the noise-cancelling effect may vary, or a beeping sound (howling) may occur. In these cases, take off the headset and put it on again.

The noise cancelling function primarily works for noise in the low-frequency band (train, aeroplane, engine noise). Although noise is reduced, it is not cancelled altogether.

When you use the headset in a train or a car, noise may occur depending on environmental conditions. It is not advisable to wear noise-cancellation headphones while driving, as taking notice of traffic sounds is essential for your safety.

Mobile phones may cause interference and noise. Should this occur, locate the headset further away from the mobile phone.

Do not cover the microphones. The noise cancelling function or the Ambient Sound Mode may not work optimally, or a beeping sound (howling) may occur. In these cases, take your hands off the headset microphones.

Did you know that you can optimise your noise cancellation settings? Noise cancellation technology allows users to tweak settings by running an analysis of new and different conditions.

The optimise function detects variable factors, such as the pressure change in an aeroplane, the presence or absence of glasses, and even your hairstyle! Once you’ve optimised your headphones, they will retain their settings until you rerun the program.

We recommend running the optimiser when you use your headset for the first time, when you travel in an aeroplane, or if you are in an environment in which you use them most often. If your wearing conditions change drastically, it’s never a bad idea to run this function. You can also run it via the Sony | Headphones Connect app.

How to run the optimiser function

• Power on your headset
• Activate NC mode
• Press and hold the NC/AMBIENT button for about 2 seconds while in NC mode until you hear the voice cue
• Optimiser start! Just let your headphones do the work and avoid interfering during optimisation. You will cancel the
• process if you engage the headset during the program.

Note: If you’ve set the NC/AMBIENT button as the Google Assistant/Amazon Alexa button, you can't operate the NC Optimizer function from the headset. Use the Sony | Headphones Connect app instead.

Turn on the noise canceling function of your headphones if you want to listen to music without the interruption of surrounding noise. Turn on Ambient Sound Mode if you want to hear the sounds around you.

Switch Between Noise Canceling and Ambient Sound Modes Turning on your headphones automatically enables the noise canceling function. To switch to Ambient Sound Mode, press the NC/Ambient or NC button. The location and name of the button may vary with the model of your headphones. Check the manual for model-specific information.