Controllable Noise Cancellation; How Controllable Noise Cancellation Works; Noise Cancelling Levels - Bose QUIETCONTROL 30 Owner's Manual

C O N T R O L L A B L E N O I S E C A N C E L L AT I O N

How controllable noise cancellation works

• Noise cancellation reduces unwanted noise providing a clearer, more lifelike
audio performance.
• Each time you power on your headphones, noise cancellation is fully enabled at the
highest level (12).
• You can use noise cancellation while listening to audio, or you can use noise
cancellation only.
• As you increase noise cancellation, unwanted outside noise is reduced.
• As you decrease noise cancellation, you hear more outside sounds.
• When you receive a call, the headphones remain at the current noise cancelling level.

Noise cancelling levels

There are 12 levels between full noise cancellation and full awareness. Level 1 is
the least amount of noise cancellation, while level 12 is the maximum amount of
noise cancellation.
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