Today's coolest audio gadgets

Although in the past music Compact discs have been the most important medium for collecting music, nowadays MP3s have become mainstream and iPods and media players have begun to replace the traditional CD player. I will explain how to build and maintain an iPod music collection. I am in addition going to illustrate some terrific features of MP3s. Finally, I will point out some cool products that can complement your setup. MP3 song collections have several advantages over utilizing Compact discs like being able to immediately access every song and not having to worry about scratched Compact discs any longer. MP3s can store extra track information. Such data contains track title, artist name, album name as well as album cover artwork. This data will make searching as well as organizing your music simple. There are a number of methods to build your music collection. The first method is to convert your existing CD collection. To convert Compact discs into MP3, you'll need a software tool. This tool is often referred to as ripper. A ripper can read songs from a Compact disk and convert them into MP3 and save on your PC. A ripper, though, will not be able to fill in the tag information. So you will have to fill in that information manually. This can be a dull task. On the other hand, a few software tools help automate this process by utilizing online databases. These automated services are not 100% accurate, however. Also, they will only tags some percentage of tracks. If you order tracks as MP3s, however, they will already be tagged. As an alternative to purchasing and downloading songs which can be time consuming, using tools such as iGetMusic can help automatically build a larger song collection. Audio quality will mostly depend on which bit rate is utilized. A higher bit rate will usually result in better sound quality but a larger file size. If you have adequate disc space, you most likely won’t have to be concerned about file size. If you wish to put music on a portable player though including an iPod, you’ll need to compromise between sound quality and the number of songs you can put on your player. In addition to MP3, there are several other formats obtainable such as WMA or AAC. Some more advanced formats like AAC Plus will accomplish the same sound quality at only half the file size of MP3. On the other hand, several MP3 and media players do not yet support some of these newer audio file formats. Some of the benefits of having built your MP3 collection are that you can simply access every track, artist or album and play your music on any computer or media player. You can also move your music onto an MP3 player to enjoy outside. If you wish to enjoy your music collection on your PC or media player throughout your home, you can attach a wireless audio transmitter to your PC and set up wireless receivers to attach to speakers in other rooms. You may prefer listening to your music over headphones. Wireless headphones will free you from being tethered to a headphone cord. Some models of wireless headphones utilize digital audio transmission. These models avoid the loss of sound fidelity of older wireless headphones.

The iPod from Apple has turn into the world's most accepted MP3 player. Many 3rd-party vendors are providing accessories which make using the iPod less difficult and open up new applications. These accessories range from iPod music recording software to wireless audio transmitters. I'll review a few of the latest accessory gadgets. I will also present some buying advice to help you choose the right device. Headphones are used by the majority of iPod customers to listen to songs. On the other hand, loudspeakers are frequently a superior choice for indoor use. iPod speakers with a integrated docking cradle are offered in many diverse styles. Unfortunately, a lot of of these speakers offer inferior sound quality. The rated loudspeaker output power of these iPod loudspeakers is often very limited. Another solution that provides better sound quality is employing a pair of good-quality bookshelf loudspeakers along with a miniature audio amplifier including Amphony's microFidelity amplifier. Active speakers are an additional alternative. Regardless of whether you select passive loudspeakers and a miniature amplifier or active loudspeakers, make sure the amplifier has low harmonic distortion, a high signal-to-noise ratio and high power efficiency. This will guarantee optimum audio quality and keep the amp cool during operation. One problem with the iPod has been tangled headphone cords. Going wireless is one way to resolve this difficulty. The newest iPods include Bluetooth and WiFi wireless. iPods with wireless access can eliminate the cable by using audio streaming. Audio streaming means that the audio is sent wirelessly to a receiver. Any Bluetooth earphone or speaker supporting the Bluetooth audio protocol will be able to pick up the signal. If your iPod doesn't have integrated wireless, you can utilize a separate wireless audio transmitter to broadcast audio wirelessly to headphones or speakers. If you have a WiFi-enabled iPod, you can connect using your PC wireless network. Having your iPod connected wirelessly will appear just as if you have your iPod attached via USB cord.You can similar to utilizing a USB cable move and synchronize tracks and modify several of the iPod settings. Obtaining tracks for your iPod can be a hassle and expensive. As opposed to ripping CDs, an increasing number of users are purchasing music online from stores including iTunes or download tracks from file sharing networks. A much more hassle-free and less costly choice is using 3rd- party software including iGetMusic for building a song collection by recording from online radio channels and automatically tagging each song with title, artist, album and genre information and adding album cover artwork for import into iTunes and move to an iPod.

AOL Radio and Yahoo! Launchcast listeners are now building their iPod music collection for free thanks to iGetMusic, a new recording tool. Building and expanding a song collection for an iPod has thus far been a tedious task. This process would normally involve ripping CDs and converting tracks to MP3. Finally, meta data such as title and artist information would be added either manually or by going to an online source. Nowadays more and more songs are being purchased from online vendors such as iTunes or downloaded from other sources, some of which may or may not be legal. Downloading songs however still remains a tedious task, not to mention the fact that the recording industry, plagued by falling sales, is putting tons of fake titles onto peer-to-peer (P2P) sites in order to slow the process of illegal downloads. However, downloading a large number of titles still takes a reasonable amount of time. Just imagine entering the search information, waiting for the download to complete etc. for several hundred or even thousand tracks. Another method which does not require downloads is using internet radio rippers, such as StreamRipper, which will record tracks from online radio broadcasters. This method would appear to save a lot of time compared to downloads. However, the biggest problem with internet radio rippers is the cross-fading between tracks which makes creating cleanly cut tracks impossible for rippers. When splitting tracks, rippers rely on the title information which is broadcast along with the songs to determine where to split tracks. Online radio broadcasters, however, are deliberately varying the time when the title information changes in relation to the beginning of each track. As a result, a user will have to manually edit each track in order to get properly cut tracks. This will take a significant amount of time for a larger number of tracks. Recently Amphony, a company that makes audio and software products has released iGetMusic which is an application that will extract music from free online radio services such as AOL Radio and Yahoo! Launchcast. The program will run in the background and save each track that is broadcast by these online radio services into a directory of choice. These songs are automatically tagged with title, artist, album and genre information which will make organizing them later on in iTunes or other music organizer software a snap. Also, this allows easy playback of songs from a particular album or artist on an iPod. All the tracks ripped by iGetMusic are full-length, i.e. don’t miss anything at the beginning or end which is a big plus compared to traditional internet radio rippers. After starting iGetMusic, a user will start one or several browser tabs and tune each tab into the desired music channel. iGetMusic is able to extract the songs from any number of browser tabs in parallel thus greatly increasing the recording speed. In practice, the maximum recording speed is only limited by the speed of the internet connection and the speed of the computer. This means that several thousand tracks can be created in a single day. iGetMusic will recognize which songs already exist and not record any duplicate songs. As an added bonus, iGetMusic has a feature that automatically saves the album cover of each song which is pleasing to the eye when playing back songs on a computer with a media player such as Winamp or on an iPod. A user can set up a blacklist which contains names of artists that iGetMusic should not record. Given the large amount of tracks that can be generated by iGetMusic, storage capacity of an iPod is a limiting factor. An iPod nano, for example, will store up to 16 GBytes of data. That will theoretically will hold up to 4000 MP3s depending on the audio quality or bit rate. To help increase the amount of songs that can be stored on an iPod, iGetMusic uses the new AAC Plus (M4A) audio format which cuts the size of each track in half without sacrificing sound quality compared to the MP3 format. This means that an iPod nano can hold up to 8000 tracks generated by iGetMusic. The drawback is that some older MP3 players do not yet support AAC Plus files. As a remedy for these players, iGetMusic allows batch conversion of the tracks into MP3s using a 3rd party converter.

If you have spent a good deal of money on a pair of good-quality speakers, you want to be certain that you get an audio amplifier that will provide outstanding audio quality while meeting your budget. I will provide various pointers on the subject of audio amp devices to assist you make the perfect purchasing decision. Audio amps appear in all different shapes and sizes. They employ different technologies and have countless technical specs. Still, you don't have to be a specialist to select the right model. By following some essential rules you won't regret your buying decision. One vital parameter is the size of the amplifier. You can buy models that can fill half a room. In contrast, some of the latest miniature amp models are no larger than a deck of cards. Many amps are rack sized. This permits them to be stacked on top of your other audio equipment. Nearly all of recent audio amplifiers are based on solid-state technology while a tiny part is based on tube technology which has been popular over a decade ago. Unfortunately, tube amplifiers have fairly high audio distortion which describes how much the audio signal is degraded by the amplifier. Tube amps will have audio distortion of up to 10%. Solid state amps will have lower audio distortion depending on the amplifier technology that is employed. The most traditional amplifiers utilize a "Class-A" and "Class-AB" technology. These amplifiers are also called "analog amplifiers". Audio amps which are based on these technologies normally have low harmonic distortion. In addition, this technology is fairly inexpensive. On the other hand, the disadvantage is that the power efficiency is only in the order of 20% to 30%. Power efficiency describes how much of the electrical power is used to amplify the audio as opposed to being wasted as heat. Amplifiers with low power efficiency will need fairly large heat sinks because most of the power is radiated. In contrast, "Class-D" amplifiers which are also named "digital amplifiers" have a power efficiency of typically 80 to 90%. This permits the amplifier and power supply to be made much smaller than analog amplifiers. As a consequence of the switching output stage, digital amplifiers usually have larger harmonic distortion than analog amplifiers. However, a number of of the newest types are able to reduce distortion to 0.05% and less by using a feedback mechanism. The amplifier should be capable to offer adequate output power to sufficiently drive your speakers which will depend not only on how much power your speakers can handle but also on the size of your listening environment. Speaker power handling ability is given as peak power and average power. The peak power value refers to how much power the speaker can tolerate for a short period of time whereas the average power handling value denotes how much power you can drive the loudspeaker at continuously without damage. In a small listening area, you may not require to drive your speakers to their rated value. 20 to 40 Watts of power will almost certainly be sufficient. Low-impedance loudspeakers typically offer high sensitivity and are simpler to drive to high volume than high-impedance loudspeakers. Be sure that your amp can drive your speaker impedance. You can easily find the rated speaker impedance range in your amplifier’s user manual. Additional important parameters are the signal-to- noise ratio and frequency response which should be in the order of no less than 100 dB signal-to- noise ratio and 20 Hz to 20 kHz frequency response for high-quality amps.

The procedure of installing multi-channel audio speakers in home theater products is rather tedious and manufacturers have invented new products and technologies like wireless surround sound speakers or surround sound wireless headphones lately to help simplify the installation. I will look at a few of the products and technologies that have emerged and give some advice about picking appropriate components for a hassle-free installation. Many of modern TVs will be installed as a multi- channel audio system. As historically TVs would come with built-in stereo speakers, nowadays a number of external loudspeakers are used to allow the viewer experience surround sound. In case of 5.1 surround, 6 speakers are used: center, left and right front, left and right rear and a subwoofer. More recent 7.1 systems need a total amount of 8 loudspeakers by adding 2 extra side speakers. As a result setting up a home theater has turn out to be rather complex and long speaker cable runs are normally undesirable for aesthetic reasons. Some technologies have emerged to simplify this process. The first option is generating so-called virtual speakers by applying signal-processing to the audio and introducing phase shifts and special cues to those audio components that would ordinarily be broadcast by the remote speakers. The audio is next broadcast by the front speakers along with the front speaker sound components. The signal processing is modeled after the human hearing. It utilizes the knowledge about how the human ear can determine the source of sound. The signal processing has an effect that will deceive the listener into assuming that the audio is coming from an alternate position. Virtual surround avoids the remote speakers and simplifies the installation and also avoids long speaker cable runs. On the other hand, it also has a downside. The shape of each human's ear is somewhat different. Therefore everybody processes sound in a different way. The signal processing is based on measurements which are done using a standard human ear model. If the form of the ear changes, sound will travel differently. Consequently virtual surround will not work equally well for everyone. An alternative solution for simplifying home theater setups and avoiding long speaker cord runs is to make use of wireless surround sound devices or wireless loudspeakers. A wireless solution will usually include a transmitter module that connects to the TV or source in addition to wireless amplifiers that will be connected to the remote loudspeakers. This transmitter will generally provide line-level and amplified loudspeaker inputs. Ideally it should have a volume control to adjust it to the audio source. A number of wireless speaker products are designed to connect 2 loudspeakers per wireless amplifier. A superior solution would provide a wireless amplifier for each remote loudspeaker to get rid of the wire runs between each of the 2 remote speakers. The most basic wireless products use FM transmission. FM transmission is prone to noise and audio degradation. More advanced products employ digital audio transmission to perfectly preserve the original audio. In multi-channel audio devices, it is crucial to select a wireless solution with a latency of merely a few milliseconds. This will guarantee that the sound of all speakers is in perfect sync. A high latency would lead to an echo effect. This effect would deteriorate the surround effect. Most wireless gadgets operate in the 900 MHz and 2.4 GHz frequency bands. Some products use the less crowded 5.8 GHz frequency band and consequently have less competition from other wireless products. A third technology uses side-reflecting speakers. This method is known as sound bars. In this case the audio for the remote loudspeakers will be broadcast by individual loudspeakers located at the front at an angle and reflected by walls as to appear to be originating from besides or behind the viewer. This solution works best in a square room with minimal interior design and obstacles. It will not work well in many real-world scenarios with different room shapes however.