Vehicle-mounted MP3

For modern vehicle-mounted MP3 products of a trend products, is at present a lot of audio fancier seeking love. Gradually, remote control of on-board MP3, electric MP3 it began to replace traditional MP3. It also called audio converter, automobile MP3 radio transmitters or MP3 the stereo partner, and so on multiple, it can be composed with ordinary MP3 player vehicle-mounted MP3 audio systems. Belong to the 21st century emerging automobile audio products, at present, the common similar vehicle-mounted MP3 equipment has many and varied.

classification

On-board MP3 major can be classified into five categories.

From the power supply way points: have cigarette lighter type vehicle-mounted MP3 and battery-powered type vehicle-mounted MP3 (7 batteries or button batteries).

From an audio source source points: independent audio interface type vehicle-mounted MP3, U disc vehicle-mounted MP3 and vehicle-mounted integrated MP3 player.

On-board MP3 working principle is very simple, it put various types of portable music devices such as MP3, CD, MD, etc, the output audio signal by wireless means of transmission launch to the car radio frequency modulation stereo equipment, the owners just put the car radio frequency is set for vehicle-mounted MP3 frequency, or for a radio frequency to the search can be broadcast.

On-board MP3 analytical

Technology should be people-oriented, in many cases, the birth of new products, not because of old products is bad, but new product use more square

Then, MP3 is such a product. From the timbre speaking, it with CD/MD/tape machine has a gap, and let the many traditional walkman players deep evil pain is its "digital taste". But then again, these years, the "digital flavour" this word less at walkman lovers mouth, of course, this is not because of technological progress, let the MP3 uninstall at the bottom of the off "digital flavour" hat, but people have been accustomed to MP3 products convenience, for some other trivial defect has already not too concerned.

If you are a "motorists" must like in driving myself car travel at the same time listen to sweet music, for in the path of ease chung blocking your mood. Today's cars either in performance, configuration had the very big enhancement, acoustics aspects also were constantly improved. But, automobile in music broadcast way on the outside except FM radio, still only tapes and CDS two kinds. When you are tired of all his songs, whether to buy updated tapes and CDS album!

Today we are going to introduce is vehicle-mounted MP3 this kind of product, think about these years of walkman: from the tape, to CD, MD, arrive again until now MP3 products are slowly, and as a result of transition of urban life fashionable gens, "buying" this word has been more and more families to write the agenda. For like music lovers, car audio also had to build part of the heart, then we can see the development of car audio process, from the FM, tapes and CDS to MD is in by evolution, then the digital era we, should know about, the stereo the next milestone - vehicle-mounted MP3? What is the on-board MP3?

Because the form with the previous MP3 broadcast equipments dissimilarity, whether CD, tape or MD walkman, they are music carrier with host separated

, that is, as long as the host installed in the car, we take the corresponding disks and tapes can enjoy music. MP3 is different, its carrier - FLASH been integrated into the MP3 host internal, we cannot through in in-car MP3 hosts to realize the stereo.

But this is difficult don't pour vehicle-mounted MP3 into car audio field, a more advanced, more convenient, more efficient way became this kind of product transmission carrier, this is stereo FM. It mainly realization principle is to MP3 music of to radio transmitting ways, transmission to the car FM radio broadcasting center, again through FM, broadcast an MP3 of music.

On-board MP3 species

First is built-in launch module MP3 player, this kind of MP3 player in the inside integrated a FM launcher. This product mainly

Advantages of high levels of integration, as long as there is a such MP3 vehicle-mounted function can be achieved, but it's ills is obvious: 1, because this kind of product is less, may product appearance with timbre couldn't answer to your requirements, but also can't change; 2, because it is inside integrated launch module, such products is compared mostly use very much power, 3, FM launch in this kind of product of mostly used as a additional functions, so FM signal strength are worth test.

Followed by separate FM launch module, there is only a single FM launcher, strictly speaking, it was not designed for MP3 preparation, other products, such as pdas, CD, MD, wait to also can be used. Its advantages are transmitted signal comparatively well, don't worry MP3 product itself tie-in problem, can choose their favorite MP3 and the collocation with, But shortcoming is such separate purchase cost would be the high number, and launch band only fixed several.

On-board MP3 tone

Purchasing and installing auto MP3 / vehicle-mounted MP3 audio converter, its purpose is to enjoy music. If there is no good sound quality, we will waste use

Door of time and money. We think that quality stand or fall basic depends on the following aspects:

(1) MP3 qualities

MP3 decoding chips is adopted itself on its sound quality stand or fall of the key. Decoder chip is used on the top of SAA7750 Philips, or ordinary Sigmatel of STMP3410, relevant internal circuit design, welding, circuit materials, etc. Are caused by different manufacturers products is a big difference.

(2) music broadcast file quality

Audio source itself influence factor is actually very big. Audio quality depends on music file format and compression ratio. At present the most mainstream music format is of course two formats MP3, wma, nowadays almost all MP3 player are compatible with the two formats. MP3 should calculate currently using users the most lossy compression digital audio formats, we usually listen to MP3 files are 128kbps bits compression ratio, compression ratio is about 1, file size only commonly, 4M in volume and soundclips above reached a relative balance position. And we downloaded from the Internet songs the compression ratio tend to be low, often only 96kbps even more low, the effect is not very ideal. This is the website for download speed and copyright issues intentionally put compression rate reduction in practice. To enjoy the real sound quality, the best way is to find my own quality better CDS, oneself to compress it. Generally speaking, compression ratio reaches 192kbps MP3 files, the sound quality is a good job with good MP3 player play, the effect and md has very close, if compression to 320kbps words, sound very close to CD machine, it is generally difficult arguing it out.

(3) car MP3 / vehicle-mounted MP3 audio converter quality

Auto MP3 / vehicle-mounted MP3 audio converter in music appreciation system established personalized plays an important role. If audio converter center frequency instability, audio will have noise, Pre aggravating circuit parameters, the system does not match the discretion of the sound quality will be affected, cannot reach bass strong, powerful, headnotes, high frequency domain reductive real broad, rise foot, please ears standards.

(4) auto FM stereo radio quality

Finally, automobile FM stereo radio signal receiving and amplifier quality also affected the whole system of timbre. Different brands and competitive price, car audio system is very big difference. For the same car, can use receiving local radio FM radio to contrast to consult.

Edit this paragraph vehicle-mounted MP3 audio converter

Install the MP3 / vehicle-mounted MP3 audio converter, really simple, one minute doing weigh in hand. Procedure is as follows:

(1) the car MP3 / vehicle-mounted MP3 audio converter plug into the car cigarette lighter socket, red indicator,

(2) the car MP3 / vehicle-mounted MP3 audio converter input audio plug into your MP3 headphone jacks,

(3) open MP3, and will volume adjusting to larger (about two thirds of the location),

(4) the car of FM radio frequency set for car MP3 / vehicle-mounted MP3 audio converter logo of frequency (default MHZ) or allow for 107.5 FM radio automatically search to the frequency can listen to music,

(5) proper adjustment of car FM radio to satisfaction.

New car MP3: also called digital disc box, like ahab microphones such not FM launcher, need not cigarette lighter, not vehicle-mounted MP3 transmitters, completely replace original CD, car audio button control (usable steering wheel button control), cable connection mode, eliminate noise interference, car special MP3 player is specifically targeted at China mainland market consumption ability, improving the design U disk or mobile hard audio and video devices. User only has a U disk, mobile hard disk, or can be implemented vehicle-mounted digital music playback. Product built-in vehicle-mounted control chip and MP3 decoding chips, with the CD, car radio nose after connection, will be able to realize the full control of the stereo music playback, timbre and car approximation to the car CD level. Popular with consumers' concern. As leading manufacturer of digital disc haggai microphones. This is one example of box

How to distinguish between high quality vehicle-mounted MP3

Car CD was once every car necessary, but in the Internet age, has been living crisis, buy expensive a heap of CDS, usually each

Pan only one or two first wants to listen to the song, many want to listen to the song again simply cannot buy CDS. With network unlimited free music resources vehicle-mounted MP3, become the inevitable choice. Follow the development trend, short four years then emerged in numerous vehicle-mounted MP3 products. Since the market good and evil people mixed up, the choose and buy is simply not the vehicle-mounted MP3.

A, wired and wireless divisional

According to signal switch pattern, can be divided into two categories: wired and wireless. So-called cable, it is to point to will the decoded audio signal by special line transmission to the stereo for broadcast way. This way, the noise is small, if you have very high demand of sound, oneself understand acoustics modified or specially-designated person installation, can choose this way. Car on the market at present LeBao, chang guest and other products, price from 58 to 900 dollars.

Second, wireless means the first generation and the second generation divisional

Wireless means

MP3 output audio signal by wireless FM mode fired at the stereo equipment for broadcast. Since it is unnecessary to attachment and modification, suitable for various models, has become the mainstream of the market.