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10.SNR:

The rate between HTML clipboard mp3 players---->mp4 player--->mp4 players loudest undistorted chime intensity and noise intensity that is sent out at the same time emerges in SNR i.e. sound source,

usually with " SNR " Or " S/N " Show, weigh audio amplifier, earphone,etc. and pronounce an important parameter of the apparatus. To MP3, it is

a very key parameter too. " SNR "  Generally use decibel (dB) It is the unit, SNR shows the better the result of the sound appliances is the higher.

Generally speaking, will choose SNR in the products of above 60dB at least. But no formal check organizations come to evaluate the SNR of the

products at present, so mark very high SNR in some inferior MP3 descriptions of products, this can only prove by your own ears. MP3 while not

broadcasting the source signal of any sound, if can hear comparatively obvious " hum " Or " hoarse and hoarse "  Voices electric current -like,the

getting lower too in ones that last machine SNR,the unsuitable to choose.

11.Recording function:

Present MP3 products, the majority has a recording function, this includes recording and producing the external sound, recording and producing

FM frequency modulation program, duplicating the sound of other apparatus such as CD. Record and produce the result of the external sound

directly, HTML clipboardwholesale mp4 players--->iPhone Accessories see not very ideal at present; Duplicate the sound that other apparatus broadcast, there is a very great result defect too. MP3 that can be

recorded at present use MP3, WMA form to be recorded and produced more, but its operation ability of code is not strong, the sound result is

not very very good; Some use ADPCM form, this is a kind of complicated code form, can't be counted as well on the tone quality, but it can make

the volume of the file smaller, records and produces with this kind of form, can store recording information for a longer time.

12.Reply and read the function:

In order to cater to the users of student of the foreign language studying, MP3 manufacturer has set up and replied and read the function in the

machine, support A-B replying reading briefly between some two. For student's user, it is comparatively essential.

13.Mobile memory:

The present MP3 players, can all be used for serving as mobile memory, helps users move the file. And, almost all the MP3 capitals will not need

the driver again (except Win98) ,Only a few MP3 demands to use the hypervisor attached to realize the file among MP3 machine and computer

is uploaded, download.

14.Interface:

Use the products of one bunch of mouths not to already see now in early days, present MP3 adopts USB interface, the transfer rate fast, support

hotly and insert dialing. But the great majority which are used in MP3 are all USB1.1 interface, can seldom see the USB2.0 one. There is some

special use and 1394 interface, extremely rare.

15.Battery:

For make to have a slender figure MP3, a lot of manufacturer put in the battery lithium in MP3 player, charge through USB interface. Have saved

the cost which buys the battery like this, does not charge for a long time frequently, make electric consumption insufficient and unable to use,

especially in the long voyage, it is comparatively awkward that such a situation is. Adopt MP3 products of the dry cell, the volume is slightly large,

but can change the battery at any time, guarantee not to be enjoyed the music (the dry cell is sold everywhere after all) restraining from by

electric consumption whenever and wherever possible . Speak of the battery, have to propose the question of MP3 power consumption. A lot of

MP3 claims how long a AAA battery can be used long more, that is under the particular environment for use, test using particular battery and

arrive, but the data moisture that some manufacturers offer is relatively big, even have suspicion of making a false report. The friends can

determine it by oneself after buying, the products finding the power consumption too big, can demand to change.

While choosing MP3 player, so long as pay attention to the question of 15 the above-mentioned respects, combines with the friends' carefulness

and patience, I believe you can unquestionably select to a good MP3 player.  In addition, May Day will come, a lot of manufacturers will be

developing the activity of promoting, the price should be much lower than usual, it is really a normal phenomenon, the friend wanting to choose

MP3 HTML clipboardiPhone Accessory---->iPod accessories might as well go to every large electronic city to have a look, wish you to choose the products of the heart appearance.