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 (stereo separation) 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, because the right and left channels do not combine in this manner, the illusion of the phantom centre 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 import for earlier stereo recordings which were less sophisticated, sometimes playing vocals through one channel and music through the other.

Binaural recordings use a different microphone technique to encode direction directly as phase, with very little amplitude difference (except above 2 kHz) often using a dummy head, and can produce a surprisingly life-like spatial impression through headphones. Commercial recordings almost always use stereo recording, because historically loudspeaker listening has been more popular than headphone listening.

It is possible to change the spatial effects of stereo sound on headphones to better approximate the presentation of speaker reproduction by using frequency-dependent cross-feed between the channels, or–better still–a Blumlein shuffler (a custom EQ employed to augment the low-frequency content of the difference information in a stereo signal). While cross-feed can reduce the unpleasantness that some listeners find with hard panned stereo in headphones, the use of a dummy head during recording, with artificial pinnae, can allow on playback through headphones, the experience of hearing the performance as though situated in the positron of the dummy head.

Optimal sound is achieved when the dummy head matches the listener’s head, since pinnae vary greatly in size and shape.

Headsets can have an ergonomic benefits over traditional telephone handsets[citation needed]. They allow call center agents to maintain better posture instead of tilting their head sideways to cradle a handset[citation needed].

Visit our web site for more information on stereo headphones.

People like to be aware of which garments and possessions belong to them,and in most situations this is not a problem If large numbers of people wear the same type of clothes, or have their clothes laundered at the same time then some kind of name label identification is needed. There are many types of name stickers and we compare all of them as follows:

Stikins label Appearance:
The most attractive labels are printed fabric or woven labels which need to be sewn into uniforms, second place is shared by iron on labels and stikins and last place has to go to laundry markers and biro where the name is written into the garment.

Labelling Speed:
The speediestmethod of labelingclothes is a laundry pen followed by stikins and then iron on labelling. Sewing in labels comes last in terms of speed especially if one is a non sewer, or have many labels to sew in.

Name Label Durability:
Washing machines remove dirt from clothes, and have difficult environment for labels. Labels can fail because they fall off or because the print fades. A well sewn in woven name label is the most durable solution and it should last the life of the garment. Mixed results come from iron on labels in terms of staying in; some are very good and some are poor, the kind of fabric they are ironed on to is also a factor, but they tend not to fade. Stikins school name labels generally survive extremely well if applied correctly and the print does not fade. Laundry markers do tend to fade with time but there is no issue regarding falling off.

Name Label Cost:
Laundry markers are the cheapest and there are also some low priced label sew in tapes. Woven and embroidered name labels have a range of prices and are often more expensive than iron in labels and stikins. The most expensive name labels are the ones that do not work, or need replacing often so buying cheap may not be good value in the end.

Which Name Labels are Best?
None of the labels above is an outright winner, all have pros and cons and the most suitable for you will depend what is most important to you. If appearance overrides everything go for the best woven labels, if cost is vital buy a marker pen, if you want a good all round performer buy Stikins. A referral from a friend or samples first is a good way of making sure of the quality of iron on labels, which can also be good all rounders. So good luck choosing clothes tags for your clothes.

www.hqblog.com