Hi quest ,  welcome  |  sign in  |  registered now  |  need help ?
Showing posts with label aviation. Show all posts
Showing posts with label aviation. Show all posts

Don't buy aviation headset until you've read this article fully

Written By anfaku01 on Saturday, June 11, 2011 | 2:14 AM

If you are a pilot for any length of time-flight aviation headsets with or without-you may have already lost some of your hearing. You cannot reverse damage that has already happened, so you should take steps to protect what you have left.

Pilots experience damage noise for long periods of time is inevitable. Sound in flight is intense.

Firstly there are three aspects that define the cabin noise sound:

1. frequency response (Hz-Khz)
2. Intensity (dB-DB)
3. duration of the sound

This is how some typical environments, speed of sound intensity:

* Jet cabin-60-88 DB
* Small engine aircraft 70-90dB
* Single engine helicopter-80-102 DB
* Average Office-40-60 DB
* Major city street-80-100 DB
* Chain saw/mower-100-110 DB
* Rock-concert-115-120 DB

Here's the limits of sound and hearing ...

* Ear discomfort-120 DB
* Ear Pain-130 DB
* Eardrum ruptured-140 DB
* Temporary hearing-2-3 hours from noise, more than 90 DB
* Permanent hearing-8 or more hours a day at the sound, more than 90 dB at 2 or more years.

The worst thing is how loud noise affects your flight:

* Distraction and fatigue
* Hard to do what others are saying and it is difficult to understand them-in other words, you need to shout to be heard
* Reduction of personal productivity by reducing the concentration of

Here's what you can do about it…

Use hearing protection-here are your options:

1. Earplugs-polyurethane impregnated with wax are the best and block the most noise
2. aviation headphones-the cheapest just physically block the sound
3. the NATIONAL aviation headphones-these earphones block out the sound with the added dimension that physically noise cab with a mirrored volume, which cancels out the noise
4. combining earplugs with headsets-extreme step, this is only available to super-loud environments more than 115 DB

Conclusion:

You cannot restore your hearing.

The moral of this story is to get aggressive with hearing protection during the flight. You spend up to $ 500 for flight in many aircraft, so what's the point of being on a headset?

Check your headset options today. Try several types and makes, to see what works best for you. Aviation headsets as clothing and footwear-what is coming, one person does not necessarily work for another.

Roger Brown helicopter and airplane pilot for 40 years. And it happens to be crazy about new gadgets. If you want to see a detailed comparison of elite aviation headsets aviation headsets test best.


View the original article here

2:14 AM | 0 comments

How does the ANR headsets in aviation

Written By anfaku01 on Thursday, June 9, 2011 | 3:57 AM

Headset higher-end aircraft rely on the active noise reduction (ANR) to tranquil environment. Manufacturers use this technology to give you an idea that the sound is reduced.

The 2 key components such as sound controlled, when you wear a headset during flight:

1. Passive noise control granted to fit into the ear Cup around your ear

2. Active noise control of acoustic components of ANR

Headphones reduce sound passively through fit. This is achieved through the development of materials in the ear Cup consists of a number of forces, as well as ear Cup has had on the area around your ears.

All sets of Niha or not, reduce and filter sound that way.

NIA goes beyond technology and tries to kill the rest of the sound that creeps into the environment of the ear Cup.

Here are the components that make it work ...

1. Microphones pick up ambient noise

2. Electronics were sound and create opposite sound

3. speakers who broadcast signal in the opposite ear Cup Wednesday to cancel ambient noise

The way it all comes together it's first meaning microphones frequency and amplitude noise in the ear Cup.

Electronics into a headset to understand and play opposite waveform and communicate the same sound, speakers.

They then send that next wave sound in the ear cup for lifting the perception of noise.

Obviously all this happens in real time-delay audio delivery will make the ANR is pointless because you hear the feedback otherwise.

To get the actual cancellation of consumer electronics need to be complicated enough to pick up on subtle differences in the cabin noise. More sensitive electronics, the more accurate noise cancellation.

Tough job for manufacturers of headset is to draw a balance between passive filtering through clip ear cups and the EPR. Obviously, you must perform more effective passive noise control if the ear cups are less work technology Anr.

This problem is a passive steps make headset wear uncomfortable for, so there are trade-offs that designers should do.

The extent to which they receive a combination of passive and ANR law determines their success on the market.

Higher-end handsets are generally very helpful and do an excellent job removing sound. One for you which you buy a headset is more a personal preference. None of the headset works best for each manager and for each flight environment.

Roger Brown helicopter and airplane pilot for 40 years. And it happens to be crazy about new gadgets. If you want to see a detailed comparison of elite aviation headsets aviation headsets check best reviews.


View the original article here

3:57 AM | 0 comments

Categories

Blog Archives