72
NexLog Recorder User Manual v2.2.0
Figure 42
—Editing the channel by clicking on the gear
Encoding
: The field is editable and sets the encoding algorithm. For analog
boards all channels on the board are set to the same encoding. This is not the
case for digital and VoIP interfaces.
Choosing an Encoding Algorithm
The following encoding algorithms are available:
13 kbit/s GSM (factory default)
16 kbit/s G726
32 kbit/s G726
64 kbit/s Mu Law
The data rate indicates the amount of storage used per second of recording. The
default will give you the most channel-hours. Encoding algorithms always
represent a compromise between storage space and perceived quality. All the
algorithms listed are general-purpose, and are not restricted to voice. You might
want to select either the 32 or 64 kbps algorithm if your recordings are going to
be used by other decoding equipment, such as with fax recording. Fax in
particular is very sensitive to the compromises made in reduced-bit-rate
encoding. The human ear is much less so.
