According to Krisp.ai, the long story of how noise cancelling or if you prefer noise reduction headphones all started in Germany in 1933 when Paul Lueg, a doctor of philosophy and medicine, submitted a ground breaking patent application about using phase-advancing waves to cancel sinusoidal tones in ducts and inverting polarity to cancel sounds around a loudspeaker. This went on to become what we today call active noise cancellation. In active noise cancellation, all that is needed is a secondary sound B to cancel out the un-needed sound A.
This system was also designed to reduce noise for the pilot in the cockpit area and help make the communication easier. Fogel was considered to be the inventor of active noise cancellation and he created one of the first noise cancelling headphones systems.
NOISE CANCELLING HEADPHONES: THE BASICS
Active noise control dates back to the 1930s, and noise cancelling headphones were part of the story for a while now. The first companies that started producing them were Bose and Sennheiser
Some of the noises that need cancellation may include.
- Passive noise cancellation
- Active noise cancellation
- Adaptive noise cancellation
These particular (Baby Earmuffs) sound proof ear protector covers for babies are designed to-;
- KEEP OUT NOISE: Effectively they keep out any noise at daytime, such as vacuum cleaner, home decoration, lawn mower or other noises, not only protects baby’s hearing, but also helps baby sleep better and longer.
- ULTRA QUIET: Seamless design was applied to these baby noise cancelling headphones to completely cover baby’s ears with no gap, totally prevents the noise from coming in.
- ZERO PRESSURE: Large internal space design prevents pressure on baby’s ears, with Skin-friendly and soft padded head band on top, all you expect is to see a beautiful smile on your baby’s face.
- LIGHT, DURABLE: High-quality ABS material has been used to minimize the weight which makes these ear muffs highly portable and easy to carry, super sturdy and durable.
● 1 in 8 children have permanent hearing damage.
● Children are extra sensitive to sound and therefore suffer hearing damage more quickly.
● According to the World Health Organization, exposure to loud noise is one of the most common causes of hearing damage.
● Noise can overstrain young children leading to stress and sleeping problems.
● 95% of children sometimes suffer from an ear infection due to loud noise exposure.
There are no known disadvantages of using protective ear gear for babies, on the contrally, babies and kids need to be armed with noise–cancelling headphones. Infants and young children have particularly delicate eardrums that can easily be damaged by repeated exposure to loud sounds (anything louder than 70 decibels), which can lead to hearing problems.