Choosing a Portable MP3 Player: Part 1 |
Choosing a Portable MP3 Player: Part 1Stereo Perception With A Single Eye MP3 players are everywhere! It seems that the number of makes and models in this market is growing daily, with features and capabilities intended to appeal to just about anyone shopping for one of these devices.Despite one or two amateur attempts at creating a separate image for each eye, it was the 1838 >>>>> MP3 players have been around much longer than the Apple iPod , but there is no arguing that this one device opened the market to a much larger customer base. In addition to Apples own success, the iPod paved the way for dozens of other manufacturers to offer their own twist on this technology. This series of Tech Tips will attempt to simplify things by taking a look at eight basic features of a typical MP3 player that may be important to a potential buyer, including: storage technologies, capacities, file formats, displays, batteries, extra capabilities, computer interfaces, and size. Part 1 of this series will handle the first four topics, and the second set of four topics will be covered in Part 2. Storage Technologies The Best Of Both Worlds: A CD MP3 Player Has Portability In general, portable MP3 players will utilize one of two formats to store the files on the device, either flash memory or a hard drive. Flash memory similar to that used in digital cameras is also found embedded in many lower capacity MP3 players. Due to the basic capacity limitation of flash memory, hard drive based units are required by those who need to store thousands of files on one device (or fewer files of higher quality).The portable CD player ain't what it used to be. New formats enable a single disc to hold up to 675 songs. That's up to 45 hours of music on a CD...... It may be feasible to find flash memory based players with capacities that range from 128MB to 1GB (or maybe a bit higher), and the MSI MegaStick 511 is an example of a 1GB flash memory based device. Hard drive-based units can provide much more space, and your typical Apple iPod and Creative Zen will use a hard drive in order to achieve their capacities of up to 40GB. One of the key advantages of flash memory-based players is that they are "solid state", an old electronics term which used to mean "contains no tubes", but now basically means that a device contains no moving parts. No moving parts means fewer hardware breakdowns, longer battery life (playing time), and it means that the devices can be bounced around with no skips or damage to the device. If you're looking for a durable MP3 player to go jogging with or take to the gym, you probably want a flash-based player. There are other formats that may be used for portable MP3 players, and the Classic CM343R is an example of a device that plays MP3s from recordable CD media. Capacities The capacity of these players was already touched on in the previous section, but there is more to consider. Determining the capacity desired can have an impact on price and physical size, but the main thing to consider is how many files need to be stored on it. Several variables determine the quantity of music any given player may hold, namely file type and compression encoding bit rate. MP3 files, for example, may be encoded at bit rates ranging from low quality (64kbps) to high, up to 320kbps. Lower bit rates use less disk (or memory) storage space, but offer sound quality comparable only to a telephone call or AM radio. Higher bit rates, up to and exceeding that of CD quality sound, may be used, but of course take more space. As with all things, there is a trade-off between quantity and quality think of it terms of the number of hours of TV you can record to a VHS tape in SP, EP, and SLP modes. Sony Digital Cameras - Always On The Innovation Frontier For the sake of discussion, we will use a decent bit rate of 128 kbps, which will turn 5 minute long songs into files of approximately 5 MB in size. Some simple math shows that a 128 MB device, such as this Egoman unit, will only hold about 25 such songs, while a 40GB iPod can hold about 8000. A device intended to be used only for jogging may do just fine with 128 MB of storage, while a device used in the car, at the office, and elsewhere may benefit greatly from more storage space unless you like listening to the same handful of songs over and over again.Sony was the first company to introduce digital cameras into the market. Today, Sony is one of the leaders in the digital revolution. Its historical......... Some players offer a base of onboard memory, plus the flexibility of adding more memory through the use of an expansion slot. These slots will accept flash memory, usually SD or MMC , and it can be a cost effective way to add 512 MB to a 128 MB device, such as this one from Ultra Products. File Formats Calling these devices MP3 players may be a bit unfair, as most will actually read a few different file formats. MP3 is definitely the most popular, but other common formats include WMA (Windows Media Audio) and WAV (Microsofts Waveform Audio). Some Thoughts On Choosing A Flash MP3 Player Less common formats are also supported by some devices, such as AIFF (Audio Interchange File Format) and AAC (Advanced Audio Coding). In addition to MP3,the iPod supports these two formats and a few others that most other players do not support, which makes sharing these files with any other device just about impossible without conversion software.Flash mp3 players come with an exciting array of features, and can be used for more than playing music while you >>>>> Software is available for creating MP3 files from audio CDs, as well as for converting digital audio files from ...... |
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