Top Three Things To Look For In Soundcards
If you remember the days of Atari and "Pong," you probably also
remember the personal computer's first sound: beep. Yes, you are
correct, in the early stages of computing, computers were only
able to utter a beep. This sound was used as a warning to the
user that something might be amiss. Later on, technicians were
able to toy with the length and frequency of the beep, thus
creating a bit more variety to the listener.
Fast forwarding to today, special sound cards now enable
computers to play 3-D audio, which is extensively used for
games, as well as surround sound playback for actual DVDs. Some
sound cards even enable computer users to record the sounds
around them and create almost professional audio recordings!
Sounds cards' most basic function is the translation of analog
sound waves into digital computer data that may be manipulated
in any number of ways. While this sounds fairly straight
forward, it is imperative to remember that not all sound cards
are created equal, and depending on the extensiveness of your
need for this little device, there are some things to consider.
Let us take a quick look at the top three things to consider
when considering which sound card to use:
Consider the sound card's bit-rate. No matter what use you will
have for your sound card; the bit-rate will affect your
enjoyment of the sound. Usually, these cards rate anywhere from
eight to 16 bit; however, the most advanced technology now
supports 24-bit sound quality. While the numbers appear close,
this is the time to remember that the bit-rate is directly
related to the clarity and "detail" you will be able to discern
when listening to the sounds. Akin to the way resolution of a
picture is measured in pixels (and the more pixels the higher
the resolution, the crisper the picture), clarity of sound may
be expressed via the bit-rate.
Consider the sound card's connections. At the basic level, sound
cards will permit for the connection of a microphone and of
speakers. Yet those users, who need additional connectivity for
recreational or even professional use, have caused the
development of a whole host of additional input and output
connections. For example, depending on the card, some now offer
connections for multiple speakers to support 3-D and also
surround sound. Other connections allow for the connection of
synthesizers and other electronic instruments to the computers'
sound cards. The specific form of connector is referred to as
musical instrument digital interface (MIDI). USB connections
also allow for the hook up of digital audio and video recorders
to the sound cards.
Last but not least, consider compatibility with the software you
use. The sound card is designed to give the audio portion of
your data its due, but if your sound card will not support your
software, you will be frustrated at best. For example, if you
are a serious computer gamer, you are familiar with DirectX
software. This software is a standard for Windows based games,
and as such it is updated frequently by Microsoft. Purchase of
an older model sound card may not support the latest software
update, and thus be useless. For those who are strict music
lovers and notice the lack of tuning the second violin in the
orchestra has received, there are some other ratings that will
be of interest to you. First there is the signal to noise ratio
(S2N) which may be measured in DB's. The lower the signal to
noise ratio, the lower the sound quality will be. At the lowest
end of the spectrum you may hear humming or whistling in
addition to the sound. Secondly, you may wish to evaluate the
total harmonic distortion (THD) offered. The higher the THD, the
worse the sound quality is expected to be.
Obviously, computers have come a long ways from the original
"beep" many of you will remember. With this loss of simplicity,
we now find ourselves at a point where it is up to the users to
define just how much of this technology they will need, which
aspects are the most crucial in compatibility, and how the
technology needs to be configured to best benefit the individual
user.