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Importance of MP3 Sampling Rate

Importance of MP3 Sampling Rate..

An important buzz word to lean is sampling rate. Digital recording is achieved by sampling — essentially, taking a digital snapshot of the sound at regular intervals. The higher the sampling rate, the more snaphots are created in a fixed period of time, and the more accurate the recording.

There exists a direct relationship between the sampling rate, sound quality (fidelity), and storage space: the higher the sampling rate, the higher the fidelity and the greater the storage requirements. Digital sound sampled at high-fidelity rates requires massive storage. For example, the CD audio format can hold 600 million characters of text, but only 74 minutes of uncompressed music. A well-encoded MP3 file has what is called "near-CD" audio quality. Like the ATRAC compression used in MiniDisc recording, MP3 reduces file size by selectively removing information that is beyond the frequency range of human hearing or that is "masked" by more prominent sounds that occur simultaneously.

Music compressed with MP3 at good quality (128 kb/s) requires 10 times less memory than it would in the uncompressed CD format. That means downloads are 10 times faster and MP3 players can hold 10 times as much music in the same amount of memory space. When compared side-by-side with the original CD, an MP3 file sounds very good, and for many pieces of music the sound quality will approach or be perceptively equal to the original CD recording.

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