the first pair of regular headphones was invented in between 1958 and 1961.
the first pair of regular headphones was invented in between 1958 and 1961.
when was the first pair of regular headphones invented?
between 1958 and 1961
Na
Na
over the last few years, the use of noise-cancellation headphones as sleeping aids has increased. both active and passive noise-cancellation headphones and ear plugs help to achieve better noise isolation from ambient sounds, which is particularly helpful for people suffering from insomnia or other sleeping disorders, for whom sounds such as cars honking and snoring impact their ability to sleep. for that reason, noise-cancelling sleep headphones and ear plugs are designed to cater to this segment of patients.









































section::::drawbacks.









































noise-cancelling headphones have the following drawbacks:









































bullet::::- they typically cost more than regular headphones.
noise-cancelling headphones