Noise cancelling headphones

[Dr Bunsen Honeydew]

NO! I don't want ear plugs, I want noise cancelling headphones. They have a microphone that picks up external noise, a small amplifier inbuilt usually with a battery. That signal from outside is then phase inverted to the two headphone inserts or cups so the noise in one ear cancels out the other = silence.

[jammy395]

But would they work if no music was playing........

[Daniel Quinn]

Is it to drown out Nadia shouting , let me know if they work , I will get a pair . All I hear these days is her moaning about the children , children moaning about what they want and toddler DQ saying repeatedly "what is this daddy" despite the fact he bloody well knows the name of what he is pointing at. Silence would be welcome .

[Daniel Quinn]

But would they work if no music was playing........

yes [ in theory ] an inverted phase signal at the same frequency cancels out the other signal and thus silence .

[Dr Bunsen Honeydew]

But would they work if no music was playing........

They have nothing to do with music, unless that music is the noise you are trying to remove.

[Dr Bunsen Honeydew]

I know they are made but the whole thing is very confusing as ordinary music buds and headphones are being called noise cancelling and I don't know why.

A lot of airlines provide them as standard for 1st class and business class customers. They kill the aircraft noise but cut out for announcements..

[Dr Bunsen Honeydew]

But would they work if no music was playing........

yes [ in theory ] an inverted phase signal at the same frequency cancels out the other signal and thus silence .

Yes that is how a BMU works with mains noise. Which is why I always say "like noise cancelling headphones" now I see few seem to understand what they are.

[Orc 201267]

https://www.bax-shop.co.uk/ear-protecti ... wody3QKggy

[Orc 201267]

Used for drumming sesions

[Fretless]

Active noise cancelling is used in headphones like the Audio Technica ATH-ANC70 which is designed for on-flight use and claims to eradicate up to 90% of the noise from the surroundings.