CAPABILITIES
8
– Setting the timers (p. 56);
– Setting and changing PIN-codes (p. 57);
– Updating the voice recorder’s software (p. 58);
– File management (p. 59);
– Converting from WAV to MP3 (p. 60);
– Digital signature verification (p. 61);
– Exporting and importing private keys (p. 64);
– Exporting public keys (p. 66).
RECORDING DURATION
Recording duration depends on the selected parameters and the available memory space.
If you use lithium batteries, 1.5 V, the continuous recording duration, with PCM, 16 kHz, stereo
and free memory (internal and microSD) space available is about 30 hours.
For convenience of preliminary planning of sound recording, the recording duration for various
modes and sample rates are the table below. Calculation is provided for 4 GB of memory.
Mode
Recording duration, hrs.
Sampling rate
16 kHz
8 kHz
μ-law 8 bit, mono
72.5
145
μ -law 8 bit, stereo
36.3
72.5
PCM 16 bit, mono
36.3
72.5
PCM 16 bit, stereo
18
36.3
PCM 24 bit, mono
24
48
PCM 24 bit, stereo
12
24
If you wish to increase the recording duration, you should use the mono recording mode and
data compression.