The term digital music refers to any musical composition converted into digital signal. To achieve the conversion, the audio signal picked up by a microphone is converted into an equivalent electrical signal, that is sent to an analog-digital converter. The latter is an electronic device that generates a digital data stream representing the original audio signal.
The digital data stream can be simply recorded as a file on magnetic tape, hard disk or optical disc. The step consists of transformation from analog signal to digital signal, a sound part of the harmonics that make up the original signal that are lost and do not appear in the final digital signal or music incursions.
The degradation is quite noticeable if the conversion is defined in the standard CD Audio, which sets the sample rate 44.1 kHz, adopting multiple sampling frequencies of this standard, the loss of sound quality in the conversion is much lower.
