Buying Guides for Car Mp3

Purchase and installation of car Mp3 or Car MP3 audio converters, the purpose is to enjoy the music. If there is no good sound quality, using the car MP3 will waste a lot of time and money. In our opinion, believe that the basic audio quality depends on the following aspects:

(1) The sound quality of a car MP3
MP3 decoder chip used in itself is the key to good or bad depending on their quality. Decoder chip is the most high-end Philips's SAA7750, or Sigmatel's ordinary STMP3410, related to the internal circuit design, welding process, circuit board materials all create a great difference between different manufacturers products.
(2) The quality of music played files
The factors affecting the quality of audio is actually great. In turn depends on the quality of source music file formats and compression ratio. The most mainstream music format is of course MP3, wma formats, and today almost all MP3 players are compatible with both formats. MP3 users should be considered the most current digital audio format, lossy compression, we usually listen to the MP3 files are 128kbps bit compression rate, compression ratio is about 1:10, the file size to only 4M, in volume and sound quality to a top more balanced position. The songs we downloaded from the Internet are relatively low compression ratio, often only 96kbps or even less, are not always effective. This is the site for download speeds are copyright issues specifically to the practice of lower compression ratio. To enjoy the true sound quality, the best way is to find the quality of their better cd disc, their compression. In general, the compression ratio to 192kbps in the MP3 file, the sound quality was more of the good, MP3 player with a good player, effects, and md's have been very close, if compressed to 320kbps, then very close to cd quality machine, most people difficult to differentiate them.

(3) Quality of car MP3 / MP3 audio converter
Car MP3 audio converter to create personalized music listening system plays an important role. If the center frequency of instability in the audio converter, audio there will be noise; pre-emphasis circuit parameters do not match, the system will be affected the level of sound quality, can not reach the bass strong and powerful voices to restore the true, high-frequency wide area, up less than and please the ears of the standard.
(4) The quality of car FM stereo radio

Finally, the car FM stereo radio receiver and amplifier signal quality also can affect the sound of the overall system . Different brands and price of the car's audio system will have a big difference. As for a same car, you can use to receive local FM radio station to compare.

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