Sample Rate

Select the quality of encoding. The higher Sample Rate means highter quality but with a larger file size. We recommend 44100Khz - CD-audio quality.

Bitrate

Select the quality of encoding. Determines the number of bits per second. The higher bitrate means highter quality but with a larger file size. We recommend 128 Kbps.

**Table 1.1:** Bitrate versus sound quality
Bitrate	Bandwidth	Quality comparable to or better than
16 kbps	4.5 kHz	shortwave radio
32 kbps	7.5 kHz	AM radio
96 kbps	11 kHz	FM radio
128 kbps	16 kHz	near CD
160-180 kbps (variable bitrate)	20 kHz	perceptual transparency
256 kbps	22 kHz	studio

Mode

You can select Stereo or Dual channel mode. Dual Channel Mode - In this mode, the encoder will make use of a correlation between both channels in order to achieve higher compression. This will enhance the quality of constant bitrate recordings, and reduce the size of variable bitrate recordings. We recommend Stereo mode for best quality.

Copyright

Mark the encoded file as being copyrighted.

Original

Check this option if encoded file is original, otherwise the encoded file as being a copy.

CRC

Turn on CRC error protection. It will add a cyclic redundancy check (CRC) code in each frame, allowing to detect transmission errors that could occur on the MP3 stream. However, it takes 16 bits per frame that would otherwise be used for encoding, and then will slightly reduce the sound quality.

Private

Mark the encoded file as private use only.