The first general part is used to select recording sample rate and compression method. To
achieve the best quality you should use 16kHz or 22kHz without compression, but this mode
takes the most power from the battery and will use most of the space for storing the data. For
best performance check table showing battery life and memory capacity for each specific
mode. Using ADPCM 2bit compression results in worst audio quality.
Next page is used for voice activated recording. When this option is enabled, recorder is
recording only when it detects sound above selected threshold level. Minimum level means
the highest sensitivity. Delay is specifying the time, for how long recording continues after
this sound level is not detected anymore. Recommended value is 5 seconds or more. When
LED is enabled to flash during recording, it is flashing only when recording is in progress and
not when the recorder is in idle mode waiting for exceeding the selected threshold level. This
mode saves significantly the battery energy resulting much longer time of operation.