Currently, both home audio, car audio and computers, are dominated by disc CD (compact disc) as its data storage media. Many data storage media for audio than a CD (compact disc) such as tapes, LPs, diskettes and others. Since the birth of the CD (compact disc), large-scale evolution had occurred in all technology data. And until this moment, the CD (compact disc) is an option to save data in the audio.
Why should the CD (compact disc)? Especially in the world of audio, the signals of digital audioavailable in CD (compact disc) is the binary numbers 0 and 1, so the processor can easily modify the data. The medium used to perform data modification audio al; equalizer, crossover, and time alignment. In theory, duplicate digital data will not reduce the quality of the end result. No data was lost and no additional distortion at the time of duplication or often called a copy. But in reality, there is missing data and immediately corrected by the digital system is a process called "error correction" that serves to repair the defective data. By doing so, though flawed but because it was done "error correction", then the data audio with disabilities are not heard from again.
Another advantage of the storage media of digital systems such as CD (compact disc), is capable of storing data audio with a very wide frequency range, such as CD 24 bits, capable of storing data audio frequency range 5-96000 Hz. Then the relative has the noise is very small, flat, low distortion, and agile as data transfer very fast.
From various research and comparison, a CD (compact disc) also have noise and distortion , but when compared with media storage analog systems, distortions in the media of digital systems is somewhat different definition. In digital media, distortion more data leads to the audio to be less accurate because the phase changes occur at high frequency and delay.
Uniquely distortion digital system will be more so when the volume lowered. So if there is a sound recording of a particular musical instrument that is smaller than any other voice, the voice that will hit most severely. For example, tambourine or shaker voice (aluminum tube containing fine granules) is a background of a full band, the digital system is bad, it could have become unclear voice tambourine or shaker voice even disappear altogether. Example: data digital system on the MP3, the sound is considered to be very small it will be considered as noise and immediately deleted. In collecting data from a CD (compact disc), player CD(compact disc) using laser beams are fired into disc CD (compact disc) containing the data in the form of micro dots. The points that reflect and absorb incoming light. Then the reflections are taken as data.
Unlike tapes, LPs or diskettes, media analogue systems in data collection should occur physical contact between the storage media with data collection tool, for example head on cassette player, or needle on the turn table. Physical contact will affect the sound quality. The longer used over and over - again, lowering the quality even more because there are eroded and worn. While the CD (compact disc) is absolutely no physical contact, so that when played over and over again will not experience any wear or loss of quality. Indeed, considering the technology, media, digital system is better than the media analog system. Even when performance is compared directly, easily people will choose the sound CD (compact disc). But when dikomparasi with analog systems in depth by people who are trained in assessing quality audio, media,analog system that uses a record capable of producing a more musical sound, natural and comfortable in the ear though it has noise greater than a CD (compact disc .) Recordings on CD (compact disc) is the best too, usually have a deficiency in the feel / ambience and tonal balance that is less proportional.
This deficiency occurs due to incorrect recording technique. In general, a recording studio to a digital systembut using a recording procedure for the analog system, so that when the media convert into digital systems, the results are not perfect. So although the current CD (compact disc) dominate, but improvement for the improvement continues and will not cease to produce better quality.
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