Music player20music and music with nuances usually require a higherbitrate than basic pop music.For speech or other sources where the quality of the soundis less important than saving storage space, you can usebitrates between 8 and 64 Kbps. At low bitrates WMA orAAC generally gives better results than MP3.Variable bitrateYour device also supports variable bitrate (VBR). Variablebitrate means that the sample rate of the encoding varieswith the complexity of the encoded material. When usingVBR, the encoding is optimized without losing as muchquality as with constant bitrate (CBR) encoding.
