Yes, the following is an introduction to car MP3
Introduction to car MP3
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Car MP3 audio converter also Called audio converter, car MP3 wireless transmitter or MP3 car audio companion, etc., it can be used with an ordinary MP3 player to form a car MP3 audio system. It is an emerging car audio product. Currently, there are many common car MP3 devices.
Car MP3 players are generally divided into five categories.
From the perspective of power supply methods: cigarette lighter-type car MP3 and battery-type car MP3 (AA battery or button battery).
In terms of audio sources: there are independent audio interface car MP3, USB disk car MP3 and car integrated MP3 players.
The working principle of car MP3 is very simple. It transmits the audio signals output by various portable music devices such as MP3, CD, MD, etc. to the car FM stereo radio equipment through wireless transmission. The car owner only needs to Set the frequency of the car radio to the frequency of the car MP3, or let the radio search for the frequency and play it.
Car MP3 analysis
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Technology should be people-oriented. In many cases, the birth of new products is not because the old products are not good. But new products are more convenient to use, and MP3 is exactly such a product. In terms of sound quality, there is a gap between it and CD/MD/tape players, and what makes many traditional Walkman players hate it is its "digital taste". But then again, over the years, the term "digital flavor" has appeared less and less in the mouths of Walkman enthusiasts. Of course, this is not because of the advancement of technology, which has made MP3 get rid of the "digital flavor". " hat, but people have become accustomed to the convenience of MP3 products and no longer care much about other trivial flaws.
If you are a "car owner", you must like to listen to pleasant music while driving your car to relieve your mood on the congested road. Today's cars have been greatly improved in terms of performance and configuration, and continuous improvements have been made in audio. However, in addition to FM, the only two ways to play music in cars are cassette and CD. When you are tired of all your songs, do you still want to buy newer cassettes and CD albums?
Today we are going to introduce products such as car MP3. Think about the Walkman in the past few years: from tapes, to CDs, to MDs, to the current MP3 products, it has been a slow transition. As a result, as a fashionable person in urban life, the word "buying a car" has been written into the agenda of more and more families. For people who like music, car audio is also a part that has to be carefully built. Then we can see the development process of car audio, from FM, tape, CD to MD (there are relatively few in our country, but it is already very popular in Japan.) Also As we continue to evolve, in the digital age, shouldn’t we know about the next milestone in car audio – car MP3? What is car MP3?
Because the form of MP3 is different from previous playback devices, whether it is CD, tape or MD, their music carriers are separated from the host. In other words, as long as the host is installed in the car, We can enjoy music by bringing the corresponding discs and cassettes. MP3 is different. Its carrier, FLASH, is integrated inside the MP3 host. We cannot implement car audio by installing the MP3 host in the car.
However, it is not difficult for car MP3 to enter the field of car audio. A more advanced, more convenient and faster way has become the carrier for the transmission of such products, which is stereo FM. Its main implementation principle is to transmit the music in MP3 to the car FM radio through radio transmission, and then play the music in MP3 through FM radio.
Car MP3 types
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The first is the MP3 player with a built-in transmitter module. This type of MP3 player has an internal FM transmitter. The main advantage of this product is its high degree of integration. As long as you have one such MP3, it can realize the car function. However, its disadvantages are also obvious: 1. Because there are relatively few such products, the appearance and sound quality of the product may not be the best. Answered your request, but it cannot be replaced; 2. Because it is an internally integrated transmitting module, most of these products consume more power; 3. FM transmitting is mostly regarded as an additional function in such products, so the FM signal The strength is also worth testing.
The second is a separate FM transmitter module. This is just a separate FM transmitter. Strictly speaking, it is not specially prepared for MP3. Other products, such as PDA, CD, MD, etc., are also Can be used. Its advantage is that it transmits better signals. You don’t have to worry about the matching of the MP3 product itself. You can choose your favorite MP3 to match it. However, the disadvantage is that the cost of purchasing them separately will be much higher, and there are only a few fixed frequency bands for transmission. .
Car MP3 sound quality
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The purpose of purchasing and installing a car MP3/car MP3 audio converter is to enjoy music. Without good sound quality, users’ time and money will be wasted. We believe that the sound quality basically depends on the following aspects:
(1) MP3 sound quality
The decoding chip used in MP3 itself is the key to its sound quality. Whether the decoding chip uses the most high-end Philips SAA7750 or the ordinary Sigmatel STMP3410, the related internal circuit design, welding process, circuit board materials, etc. all cause the products of different manufacturers to be very different.
(2) The quality of music playback files
The audio source itself is actually a huge factor. The quality of the audio source depends on the music file format and compression ratio. The most mainstream music formats at present are of course MP3 and wma. Almost all MP3 players today are compatible with these two formats. MP3 should be regarded as the lossy compressed digital audio format with the most users at present. The MP3 files we usually listen to have a compression rate of 128kbps. The compression ratio is about 1:10. The file size is generally only 4M, and the volume and sound quality reach a A relatively balanced position. The compression rate of songs we download from the Internet is often relatively low, often only 96kbps or even lower, and the effect is not very ideal. This is a way for websites to deliberately lower the compression rate due to download speed and copyright issues. The best way to enjoy real sound quality is to find a better quality CD and compress it yourself. Generally speaking, the sound quality of MP3 files with a compression ratio of 192kbps is relatively good. When played on a good MP3 player, the effect is very close to that of MD. If it is compressed to 320kbps, the sound quality is very close to that of a CD player. Most people It's hard to tell the difference.
(3) Quality of car MP3/car MP3 audio converter
Car MP3/car MP3 audio converter plays an important role in establishing a personalized music appreciation system. If the center frequency of the audio converter is unstable, there will be noise in the audio; if the pre-emphasis circuit parameters do not match, the high and low quality of the system will be affected, and the bass will not be strong and powerful, the human voice can be restored to reality, the high frequency range will be broad, and the rise will be sufficient. , the standard that pleases the ears.
(4) Quality of car FM stereo radio
Finally, the signal reception and power amplifier quality of car FM stereo radio also affect the sound quality of the entire system. The audio systems of cars of different brands and price ranges are very different. For the same car, you can use FM broadcasts from local radio stations for comparison.
Purchase of car MP3 players
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When you are stuck in the sea of ??cars and are overwhelmed, when you are driving When you are admiring the beautiful scenery in the wilderness and intend to drive to vent your nervousness and boredom, appropriate music can not only ease your nervousness, but also help you fully enjoy the fun of driving. The development of digital products has penetrated into every corner of society. With the popularity of family cars, in-car digital devices have gradually become a daily consumer product that everyone pays attention to.
Whether a new product can successfully enter the market mainly depends on whether the new product is more outstanding in function and appearance than the old product. MP3 is just such a product. As a plaything for young people, it is fascinating due to its compact size and numerous functions. But MP3 is not just a "patent" for young people... Today's cars have greatly improved in performance and configuration, and the audio equipment in cars has also been greatly improved. Nowadays, apart from FM, there are basically only two ways to play music in cars: cassettes and CDs. After everyone gets tired of the old songs they often listen to, they have to buy new cassettes and CD albums, which invisibly brings some inconvenience to everyone. Based on various reasons, car MP3 finally entered the market.
What is a car MP3 player?
Let’s talk about MP3 first, because MP3 players are different from previous playback devices, such as tapes, CDs or MDs. Their music carriers are all separated from the host. This means that as long as the host is installed in the car, we must bring the corresponding discs and cassettes to enjoy music. MP3 is completely different. Its carrier and decoding chip are integrated inside the MP3 host. Although it saves a lot of trouble of changing disks, the biggest problem with ordinary MP3 players is that they cannot directly realize audio through car speakers. Data output.
It seems that MP3 will no longer be relevant in our cars, but "technology is people-oriented", and there is no product that cannot be produced if there is demand. A convenient and fast old transmission method has become the carrier of audio transmission between MP3 players and cars, which is stereo FM. The working principle of car MP3 is very simple. It transmits the audio signals output by various portable music devices, such as MP3, CD, MD, etc., to the car FM stereo radio equipment through wireless transmission. The car owner only needs to set the frequency of the car radio. Set the frequency of the car MP3, or let the radio search for the frequency to play. The interesting car MP3 player has now officially entered the field of car audio. Car MP3 audio converter, car MP3 wireless transmitter or MP3 car audio companion, etc., which can be combined with ordinary MP3 players to form a car MP3 audio system, are emerging car audio supplies.
Since the working principles are different, the classification of car MP3 players is also very different from ordinary MP3 players.
General car MP3 players have an FM transmitter integrated inside. The main advantage of this product is its high degree of integration. As long as you have one such MP3 player, you can realize the car function. However, its disadvantages are also obvious: first, due to integration problems, the appearance and sound quality of the product may not be as good as yours. Requirements, but it cannot be replaced; 2. The internally integrated transmitting module, most of these products consume more power; 3. FM transmitting is mostly regarded as an additional function in this type of products, so the strength of the FM signal is also worth considering.
High-end car MP3 players use a separate FM transmitter module, which is a separate FM transmitter. Strictly speaking, it is not specially prepared for MP3, other products such as PDA, CD, MD, etc. can also be used. Its advantage is that it transmits better signals. You don’t have to worry about the sound quality of the car MP3 player itself. You can choose to test it with your favorite MP3 songs. But its shortcomings are also very prominent. The cost of purchasing car MP3 separately will be much higher, and the transmission frequency band is relatively fixed.
Since the sales volume is relatively fixed, there are not many car MP3 players on the market. The editor takes this opportunity to introduce to you the mainstream car MP3 players on the market for your reference and comparison when purchasing.
@POP AP-200
Car MP3 must have a "car" flavor. This thing that looks like a "super sports car" is from the digital storage manufacturer Bixin Technology Dragonking Technology's latest stylish and unique car MP3 player - @POP AP-200. This product is an MP3 designed by a famous German designer and manufactured by Hanfang 100. Korean audio products enjoy a world-renowned reputation, with extremely powerful sound quality, appearance, and functions.
@POP AP-200 is still very powerful in terms of functions: it supports MP3/WMA playback, Chinese and English song titles: song title, singer name, and lyrics are displayed simultaneously; since it is a Korean product, this product supports simple , Traditional Chinese, English, Korean and other multi-lingual interfaces, and the font library can be updated to add languages; the sound field settings include rock, pop POP, classical, live, normal and other sound effects optional; normal mode, single loop, Five playback modes, including full loop, random play, and browse play, are available; it has a CD cassette transcription function, which allows you to transcribe CD/cassette audio sources into MP3/WMA files directly using an audio cable without a computer; it has a large capacity of 512MB and does not require software. The driver completely replaces the USB flash drive; built-in FM radio recorder: can store 10 sets of radio stations, and can record radio programs internally; has A-B point repeat, follow-up, comparison and other language learning functions, built-in high-sensitivity microphone, high-quality field recording, You can choose recordings of different quality effects from 8bit to 256bit, long-time recording of more than 76 hours, and equipped with noise reduction recording function (vod) and voice-activated recording function, providing conditions for children to learn English in the car; @POP AP-200 also It supports directory management function and can delete single or all song (or recording) files; it can set a personalized LOGO power-on screen; it is powered by one AA battery, has strong battery life, and automatically remembers when it is turned off; the product host has a one-year warranty and supports firmware upgrades.
The biggest difference between car MP3 and ordinary MP3 is that it has FM frequency modulation transmitting function. @POP AP-200's FM function is powerful. It can wirelessly transmit MP3 songs using FM FM without any wiring. At the same time, it can be received by radio systems other than Internet radio. Using the BH1417F FM transmitter chip, it can realize FM transmission by adjusting the frequency at an interval of 0.2MH in the frequency band 87.7-88.9. This can avoid the trouble of fixed transmission frequency and will not conflict with the frequencies of radio stations in various places. .
This 512MB Korean MP3 is priced at 1,150 yuan, which is quite cost-effective in the market. The prices of similar car-mounted products are more than 1,000 yuan, but the capacity is usually small. Generally, the products at this price are 128MB products, so I highly recommend @POP AP-200 to everyone.
Patriot E808 PLUS
Patriot E808 PLUS is also a car-mounted MP3 player with a built-in professional FM frequency modulation transmitter module, which can transmit broadcasts in the frequency band of 87.7MHz ~ 107.9MHz, and it It also supports FM radio; manual/automatic station search; supports 20 channel presets; and can record broadcast content synchronously. In addition, this player has been upgraded from the original USB1.1 interface to USB2.0, and the playback time has also been improved. It only needs one AA battery to play for up to 18 hours. E808 PLUS supports MP3/WMA format playback, digital recording, A-B repeat, mobile storage and other functions. It is currently priced at 999 yuan (128MB).
The functions of this domestic brand Patriot car MP3 are quite satisfactory, but the price of 128MB of 1,000 yuan makes it not cost-effective. As a domestic car MP3, the price is slightly high.
LG MF-FE421
LGMF-FE421 is also a car-mounted MP3 player from a well-known Korean brand. It stands out among car-mounted MP3 players with its flamboyant appearance and clever and exquisite operation design. .
In terms of functions, MF-FE421 supports MP3 and WMA format playback, USB2.0 interface, FM radio frequency, supports synchronous display of lyrics, SRS, music effect bookmark function, repeat function, quick search, LCD liquid crystal display firmware function; FM frequency modulation, radio and Recording function and mobile storage function.
The current price of LG MF-FE421 (128MB) is 950 yuan. They are both Korean products. Compared with the first @POP AP-200, the price difference is quite obvious. The quality and appearance are good. .
Danding MH328
Korea Danding MH328 supports MP3 and WMA formats; has FM broadcast function; unique shape, elegant and noble; high-definition FM and FM direct recording: ultra-clear Excellent FM radio effect, automatic and manual adjustment options, can store 10 channels, FM program internal recording; 2-color adjustable backlight LCD display; 7 EQ modes, multiple choices; self-equipped car MP3 audio system.
The editor quite appreciates the affordability of this car MP3 player. It is indeed a Korean product, with powerful appearance and functions. It's a pity that the price is still too high. The prices are 1120 yuan (128MB) and 1430 yuan (256MB) respectively. They are good things and rich friends can take a look.
Korea Hyundai P101 Car Mount
This price is a good gift for all those who like modern car mounts. It is fine in workmanship, a noble model, the band can be adjusted by yourself, and it has ultra-high-definition FM radio effect. ! The price of 1G is only 198 yuan, which is really a great deal! The price is suitable for us ordinary people! For details, you can check the official website yourself, www.hyundaimp3.com
Car MP3 audio converter
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Installing car MP3/car MP3 Audio converter is really simple and can be done in one minute. The steps are as follows:
(1) Insert the car MP3/car MP3 audio converter plug into the car's cigarette lighter jack, the red indicator light will turn on;
(2) Connect the car MP3/car MP3 audio converter plug to the car's cigarette lighter jack. Plug the audio input plug of the car MP3 audio converter into your MP3 headphone jack;
(3) Turn on the MP3 and adjust the volume to a larger range (about two-thirds of the position);
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(4) Set the frequency of the car's FM radio to the frequency identified by the car MP3/car MP3 audio converter (default is 107.5MHZ) or let the FM radio automatically search for this frequency to listen to music;
(5) Appropriately adjust the volume of the car's FM radio to a satisfactory level.
New car MP3: also called digital disc box, like Chelebao/Cheletong, this type is not an FM transmitter, does not require a cigarette lighter, is not a car MP3 transmitter, and completely replaces the CD player. The original car audio button control (can be controlled by the steering wheel buttons), wired connection method, eliminating noise interference, the car-specific MP3 player is a U disk or mobile hard disk audio playback device specially designed to meet the consumption power of the mainland Chinese market. As long as users have a USB flash drive or a mobile hard disk, they can play digital music in the car. The product has built-in car control chip and MP3 decoding chip. After being connected to the car CD and car radio head, it can realize complete control of the car audio and music playback, and the sound quality is close to the level of the original car CD. It has attracted much attention from consumers. The digital disc box of Lebao, a leading foreign car manufacturer, is one such example.