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2. Noise-cancelling headphones - Wikipedia

   en.wikipedia.org/wiki/Noise-cancelling_headphones

   Noise-cancelling headphones are headphones that suppress unwanted ambient sounds using active noise control (ANC). Active noise cancellation makes it possible to listen to audio content without raising the volume excessively. In an aviation environment, noise-cancelling headphones increase the signal-to-noise ratio significantly more than ...

3. Are Noise-Canceling Headphones Harmful to Your Ears? - AOL

   www.aol.com/noise-canceling-headphones-harmful...

   The good news is that noise-canceling headphones can benefit your ears in certain situations. A few of those situations could be blocking out background noise in a busy coffee shop, blaring ...

4. How Active Noise Canceling (ANC) Headphones Work - AOL

   www.aol.com/active-noise-canceling-anc...

   A good pair of ANC headphones generates an opposite "anti" soundwave to cancel out background noise. The scientific term for this effect is phase cancellation . Think of it as adding -2 to +2, and ...

5. Active noise control - Wikipedia

   en.wikipedia.org/wiki/Active_noise_control

   Active noise control (ANC), also known as noise cancellation (NC), or active noise reduction (ANR), is a method for reducing unwanted sound by the addition of a second sound specifically designed to cancel the first. The concept was first developed in the late 1930s; later developmental work that began in the 1950s eventually resulted in ...

6. Best noise-canceling headphones, according to Consumer ... - AOL

   www.aol.com/best-noise-canceling-headphones...

   Consumer Reports doesn’t test battery life in headphones, but Sennheiser says this model will run for up to 20 hours with Bluetooth and noise canceling turned on. It can be used over Bluetooth ...

7. Safe listening - Wikipedia

   en.wikipedia.org/wiki/Safe_listening

   Safe listening. Safe listening is a framework for health promotion actions to ensure that sound-related recreational activities (such as concerts, nightclubs, and listening to music, broadcasts, or podcasts) do not pose a risk to hearing. [1] While research shows that repeated exposures to any loud sounds can cause hearing disorders and other ...