|
|
| |
|
| |
| |
| Headphones may be used to prevent other people from hearing |
|
[ 2011-5-19 12:16:00 | By: klmn064 ] |
Headphones may be used to prevent other people from hearing the sound either for privacy or to
prevent disturbance, as in listening in a public library. They can also provide a level of sound
fidelity greater than loudspeakers of similar cost. href="http://www.saleboseheadphones.com/">Bose earphones headphones Part of their ability to
do so comes from the lack of any need to perform room correction treatments with headphones.
High quality headphones can have an extremely flat low-frequency response down to 20 Hz within
3dB. However, rated frequency response distortion figures do not provide information on what
character the sound reproduced at that frequency will be. Marketed claims such as 'frequency
response 4 Hz to 20 kHz' are usually overstatements; the product's response at frequencies lower
than 20 Hz is typically very small.
Headphones are also useful for video games that use 3D positional audio processing algorithms,
as they allow players to betterearphones
headphones judge the position of an off screen sound source.
Although modern headphones have been particularly widely sold and used for listening to stereo
recordings since the release of the Walkman, there is subjective debate regarding the nature of
their reproduction of stereo sound. Stereo recordings represent the position of horizontal depth
cues via volume differences of the sound in question between the two channels. When the sounds
from two speakers mix, they create the phase difference the brain uses to locate direction.
Through most headphones,Bose in ear because the
right and left channels do not combine in this manner, the illusion of the phantom center can be
perceived as lost. Hard panned sounds will also only be heard only in one ear rather than from
one side. This latter point is of particular importance for earlier stereo recordings which were
less sophisticated, sometimes playing vocals through one channel and music through the other.
本日志相关的主题：
|
|
| | |
|
