Explanation of terms
MP3 (MPEG Audio Layer-3)
This is an internationally standardized audio data compression scheme,
using the “MPEG-1” video compression standard. It compresses the data
volume to about one eleventh its original size while maintaining sound
quality equivalent to a music CD.
WMA (Windows Media Audio)
This is audio compression technology developed by Microsoft
Corporation.
WMA data can be encoded using Windows Media
®
Player.
To encode WMA files, only use applications authorized by Microsoft
Corporation. If you use an unauthorized application, the file may not work
properly.
Sampling frequency
Sampling involves taking a reading of a sound wave (analog signal) at
regular intervals and expressing the height of the wave at each reading in
digitized format (producing a digital signal).
The number of readings taken in one second is called the “sampling
frequency”. The larger the value, the closer the reproduced sound is to the
original.
Dynamic range
The difference between the maximum undistorted sound level and the
minimum discernible level above the noise emitted by the device.
Bit rate
This is the amount of audio data recorded on a disc that is read in one
second.
Finalizing
This process enables CDs recorded with a CD recorder or drive to be
played by other players.
Linear PCM
This is an uncompressed PCM (Pulse Code Modulation) signal. Unlike
lossy compression audio sources such as MP3, no audio quality or
dynamic range deteriorates.
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