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Recording duration depending on the model modification
Table 1
Model modification
Recording time
in hours
Built-in memory
150h
150 hours
1 Gb
300h
300 hours
2 Gb
600h
600 hours
4 Gb
1200h
1200 hours
8 Gb
2400h
2400 hours
16 Gb
* for record mode 8kHz, 2-bit ADPCM compression.
Recording duration in different modes
The model modification 150h/300h/2400h means the recording time in hours in 2-bit ADPCM at a
sampling rate 8 kHz.
Various settings of the recorder allow you to optimally choose the ratio of quality and duration of
recording to your requirements. At the same time, you should consider that the sampling frequency
determines the band of recorded frequencies, and the compression method determines the quality
and memory consumption during recording.
The best recording quality (but the largest memory consumption) is achieved in the non-compression,
then according to the degree of deterioration of the recording quality (and reduction of memory
consumption), the modes follow: logarithmic (u-Law), 4-bit ADPCM, 2-bit ADPCM.
Appendix 1 Recording time
in hours at different settings in mono mode with built-in memory 1 GB:
kHz/
compression
Without
compression
Compression
uLaw
4-bit ADPCM
2-bit ADPCM
5.5 kHz
41.5
52
103.5
206.5
8 kHz
28.5
36
71
142.5
11 kHz
20.5
26
51.5
103.5
16 kHz
14.5
18
35.5
71
22 kHz
10.5
13
25
51.5
The time is specified approximately when recording in mono mode. For stereo mode, the recording time
will be halved. To calculate the recording time on your model, use the formula: recording time in the
selected mode * the memory capacity of your recorder in GB.
Additionally, it should be noted that recording modes with a high sampling rate increase the current
consumption of the recorder and, as a result, reduce battery life (charged battery).
