SomeBackup – Technology Blog

Next to cell phones, MP3 players are the must have, hot product everyone wants to own. There are lots of great players available, but how do you know which one is right for you? Here are some tips that will help you make the right decision before purchasing an MP3 player.

Tip #1 – Type of MP3 Player – There are basically four types, flash, hard drive, micro hard drive and CD based players.

Flash players are small, have a memory chip built-in, and are more durable with no moving parts, which mean they will not skip a beat during sports activity or running. Because of their compact size, space is limited to 4gigs or less depending on the model you choose. iRiver, SanDisk and Creative MuVo are three popular brands of flash memory players.

Hard drive players are great for anyone who wants to take their entire library worth of music with them. Featuring high capacity storage ranging anywhere from 4gigs to 60gigs of hard drive space. With so much disk space available, you can also store data files, pictures and video, allowing for true portability.
Unlike flash players, hard drive players are larger in size, cost more and have more movable parts, which may not make it idea for physical activity. Popular among the brands are Apple Ipod, Creative Zen Vision, and Wolverine MVP models.

Additionally you can opt for an micro hard drive player. Micro MP3 players are a cross between a flash and a regular hard drive player. Max storage capacity is usually 8gigs, have a miniature hard drive, and are light weight and compact. These players still have movable parts and some models include non-removable re-chargeable batteries.

CD MP3 players are similar to CD players, except they can read data CD’s. Capacity is the same size as a CD which is 650mbs, and the music needs to be burned. They can also play standard CD’s.

Tip #2 – Digital Format – Not all players support every music format but should play the standard mp3, wma, wav formats. For additional audio format, look for players that support aac, asf and ogg. Not stopping at audio format, you may also have a need to view video formats such as mp4, mov, wav, avi, and flash. To get the most out your purchase and enjoy your favorite digital pictures, look for models that support picture formats such as jpeg, gif, tiff and png. Flash Players such as Creative Zen, iRiver Clix, and Cowan iAudio can display text documents.

Tip #3 – Battery Life – Next to storage capacity, battery life is probably the most critical consideration with MP3 players. Options include standard batteries (AAA or AA type batteries) or rechargeable batteries. With standard batteries, you can easily replace them when needed, while some rechargeable models are non-removable lithium-ion batteries, and typically last two to four years. Since flash players need to be synced more often, recharging occurs as you sync. For larger players, battery life is usually longer but may not always be the case. Make sure you inquiry about battery life for those models.

Tip #4 – Features – With the capability to view video and photos, bright color screens with image display are usually a favorite among buyers. Voice recording with built-in or optional voice recorders, let you record seminars or meetings. Want to listen to other music, some models include an FM tuner for listening and recording (mp3) radio stations. Players such as Apple iPOD and Creative Zen line allow for personal information management options such as phone books and calendars that can synchronize data between desktop applications and the player.

Other features to consider: advanced playback features such as shuffle, repeat, resume, and playlist functions. Newer models now offer the ability to create on the fly playlists, smart playlist for grouping songs in shuffle mode and automatic volume control that makes songs play at the same volume. Don’t forget about music search and sort options to find songs.

Tip #5 – Connectivity Options. Most if not all MP3 players support USB 2.0. Other connectivity options you may want to consider is Firewire, audio and line inputs. Some next-generation models include Ethernet, Wi-Fi, or Bluetooth capabilities.

Tip #6 – Functionality – Don’t just consider bells and whistles when looking for the right MP3 to purchase. Functionality is usually what makes MP3 players stand apart from each other. Test drive each player and notice how easy or hard it is to navigate the menus. Do the buttons feel cheap or easy to press? Is the screen display sufficient in bright light? Is it compact enough for daily or sport activity? What accessories are available for the player?

No matter what model you choose, an MP3 player will be a great addition to your entertainment hardware!

FILE FORMATS There are several audio file formats in common use. There are fewer video file formats, but audio video file extensions can be confusing. This is just a brief description of what the more commonly used audio and video file formats and systems are.

AAC:Advanced Audio Coding This is the audio file format used by Apple for the iTunes Music Store, and it may appear with the M4A filename extension. It is better than MP3 for sound quality. It was developed as part of the MPEG4 group owned by Dolby (see below).

AU: This audio file format is the standard used by Java, Sun and Unix.

MPEG: Moving Pictures Expert Group There are a number of MPEG types now, described below.

MPEG-1: This is used in digital cameras and camcorders for small video clips. VHS quality playback can be expected from MPEG-1.

MPEG-2: Used for digital satellite TV, professional movie recording and recording of home DVD recordings. Provides provision for multi-channel surround sound recordings.

MPEG-3: MPEG-3 was propose as an entity, but eventually merged into MPEG-2.

MPEG-4: This is the newest MPEG system and is used for streaming internet content. It is also used in portable video recorders and for internet downloads. Required for DivX. It improves digital broadcasting and interactive graphics and multimedia.

MP3: Digital audio files, most commonly used to store and playback music. It compresses the files to about 10% of a normal audio file, and a normal music track will be about 5 -6 MB in size. MP3 stands for MPEG-1 Audio Layer 3, not MPEG-3 as many people think. A typical MP3 audio file is near CD quality.

OGG: An audio file format supporting a variety of codecs, the most popular of which is the audio codec Vorbis. However, MP3 files are much more broadly supported than Vorbis.

RA: Real Audio This format is designed for streaming audio over the Internet. It is a self-contained file format with all the audio information stored within the file itself.

WAV: The simplest of the audio file formats, developed by Microsoft and IBM, and built into Windows 95. It is an uncompressed audio file format with large file sizes (10 x MP3), and does not need further processing to play. The WAV file consists of three blocks of information: The RIFF block which identifies the file as a WAV file, The FORMAT block which identifies parameters such as sample rate and the DATA block which contains the actual data, or music sample.

WMA: Windows Media Audio A digital system invented by Microsoft, and is used in portable digital audio players. Using WMA, a file can be programmed so that it cannot be copied, and can be used to protect copyright.

WMF: Windows Media Format These are audio-video files comprising WMA and video codecs. They provide high quality and media security for streaming and download and play applications on computers.

WMV: Windows Media Video Used in the Windows media Player, this is used to stream and download and play audio and video content.

When dealing with audio and video file formats, you will sometimes notice the term ‘codec’. A codec is simply short for encoder-decoder (or compressor – decompressor). A main function of a codec is to compress audio or video data streams so that transmission of digital audio samples and video frames can be speeded up and storage space reduced.

The objective of all codecs is to reduce the file size to a minimum while maintaining audio and video quality. A quick indication of the codec’s place in the path of transmission and reception is:

Video device (e.g. camcorder) – video capture card – video digitized – codec (compresses digital info) – result (MPEG2, AVI, WMV etc) – codec (decompress) – video frames – display device.

Between the two codecs the compressed result is transferred to the display device transmitted, stored on file, etc). So to condense the flow even further, we could basically describe it as:

raw data – codec – transmit – codec – play

This is simplistic, but it shows where the codecs are used. Therefore, in order to play a movie, video or piece of music of a certain format, you need a codec in your computer to allow you to decompress the file and play it.

Have you recently bought an iPod? Or are you on the verge of buying one?

Take a look around next time your out and about. iPods are becoming as prolific as cellphones. Of course they are! The iPod is such a great gadget! Do you know the first thing you must do after buying an iPod?

You need to protect it! Most people don’t. Even though the iPod owner spends as much as $30 – $60 USD on iPod accessories. That’s 30 to 60% of the original iPod price.

The majority of people are buying fancy accessories such as fm transmitters, docking stations, wireless remote kits. Don’t get the wrong idea these are great gadgets BUT the first accessory you should be buying is protection for your iPod.

Get the basics before getting the fancy goods. iPod skins and cases come in a huge variety of styles and quality. Whatever your style – there is a case for you!

By purchasing a Skin or Case you’ll be protecting your iPod from these common problems:

* Click wheel scratches

* iPod screen scratches.

* Mirrored back scratches.

Despite the superiority of the Apple iPod, it still suffers from some major issues. Being easily scratched and short battery life. These issues lower the resale value of an iPod. This may not seem important but if you want to trade in your older one for a newer one, these things will matter. Aside from that, who wants their own pristine, beautiful iPod all scratched up? Every time you take your iPod out of your pocket it causes microscopic scratches!

There are many accessories out there but most do not fulfill the basic needs of your iPod. Protection. You need to protect your iPod before anything else. Make sure you first equip your iPod with a good quality case, skin, or sleeve.

The most popular iPod cases are as follows:

Cellphone sleeve converted to a case.

This is the most common and are most easily available. Unfortunately the mirrored back of the 3G and 4G iPod are easily scratched by the sleeve as the rub against it. If you can afford a 3G or 4G iPod then you can afford not to go this route. Protect your purchase and buy something specifically for your iPod.

iPod Silicone skin.

This is the most common case today. They come in every shape and size, color and texture. Be aware though there are mass produced low quality cases produced in China with questionable materials that tear easily. The cheap silicone skins also pick up dirt and lint easily. You can find better and branded products from the USA or Japan.

iPod Leather Cases.

iPod leather cases are also extremely popular. Unfortunately people have reported that the Apple branded one scratches the mirror back and does not have a cover flap. There are many quality leather case suppliers on the web. Check the stitching on the case for good workmanship. Belkin and Digital Lifestyle are a few that come to mind.

Water and Shock Resistant Cases.

There is an increasing need for these types of cases due to our active and mobile lifestyles. There are a plethora of cases in this market also but be forewarned that a case can only be water resistant not water proof. Water resistant means it can withstand water splashes certainly not to be immersed in water and definitely you would not bring diving! There are many aluminum cases available that offer superb shock resistance.

With the new knowledge you have, you are now ready to find the case that best fits your needs and most importantly your style! Happy case hunting.

We all have many times heard about DVI, but what does it really means and what it does? What is the main function of this tiny white port on a video card? How it can benefit you and your personal computer? Do you know which DVI is suitable to meet your requirements?

Digital Video Interface is created by Digital Display Working Group to solve the problem of accommodation analog and digital interfaces just by using single connector. It was developed because of insufficiency of standardization in digital interfacing.

Three types of standards can be seen in DVI cables. It is very important to know how each type looks like before buying to upgrade your DVI. So it is very important to know how DVI cable works and which one will be most beneficial for you.

However, DVI cables are still in the phase of development. Hence there is no specific standard for the DVI cable. In ideal circumstances, DVI home theater cable is capable to create ‘ digital to digital’ connection between the data or video sources and home theater projectors.

The standard rule for DVI cables is that it should have maximum length of 5 m for trouble free operation. It is very typical to decide a DVI cable first time.

There are two types of DVI connector and each has its own characteristics. The flat pin denotes whether the cable is analog or digital. A flat pin with four surrounding pins denotes either DVI-A or DVI-1. A single flat pin denotes DVI-D. The pin sets depends upon whether the cable is single link or dual link or analog.

To choose a perfect Digital video interface cable you should remember these tips:

1.Check both female DVI plugs to make sure what type of signals they compatible with.
2.One or both connections should be DVI-D if you are choosing a DVI-D cable.
3.One or both connections should be DVI-A if you are choosing a DVI-a cable.
4.If one of the connections is DVI and other is VGA, and if the DVI is analog compatible, then you must buy a DVI/VGA adaptor or a DVI to VGA cable.
5.when both connections are DVI-1, you are advised to use any of DVI cable, but better if you use DVI-1 cable.
6. If one connection is digital and the other is analog then there is no possibility of connection between them.