Laboratory2, LTD
1 Product specification and description of its operation
1.1
Purpose of the voice recorder.
The voice recorder Soroka-09M is designed to record audio with the built-in digital MEMS mi-
crophone in mono regime to the micro SD memory card or micro SDHC Class4 or higher.
1.2
Basic specifications of the voice recorder are shown in Table 2.
Table 2. Specifications of the voice recorder SOROKA - 09M.
№
Parameter
Description
1
Dimensions
33.3x26x5.3
2
Operating temperature range
-20° C to +40° C
3
Recording file format
«.WAV»
4
Type of memory and filing system
Removable memory cards micro SD, micro SDHC;
FAT32 filing system
5
Interface with PC
via micro SD card
6
Charger type
Cable USB – micro USB
7
Discretization of sound frequency
8 kHz, 16 kHz, 24 kHz, 32 kHz
8
Resolution
8 bit(u-law), 16 bit, 20 bit.
9
Microphone Sensitivity
-26 dBFS at 94 dB SPL (8-9 meters)
10
Non-Linear Distortion Ratio
less than 3%
11
Frequency range as per
level - 3 dB
Discretization fre-
quency
8 kHz
3 Hz – 3.384 kHz
16 kHz
3 Hz – 6.768 kHz
24 kHz
3 Hz – 10.152 kHz
32 kHz
3 Hz – 13.536 kHz
12
Duration of work, when
the resolution is 16-bit
with u-law compression
Discretization fre-
quency
Typical operating
time* (hours)
Not less than ** (hours)
8 kHz
102
61
16 kHz
68
40
24 kHz
50
30
32 kHz
40
24
13
Duration of work, when
the resolution is 16-bit
without compression
Discretization fre-
quency
Typical operating
time* (hours)
Not less than ** (hours)
8 kHz
84
50
16 kHz
44
26
24 kHz
41
24
32 kHz
32
19
14
Duration of work, when
Discretization fre-
Typical operating
Not less than ** (hours)
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Version of 25.02.2018
