Laboratory2, LTD
Page4
Version of 05.09.2019
1 Product specification and description of its operation
1.1
Purpose of the voice recorder.
The voice recorder Soroka-10Е is designed to record audio with the built-in digital MEMS mi-
crophone in mono mode to the micro SD memory card or micro SDHC Class4 or higher. The recorder
is powered by LR03 battery of 1.5 V.
1.2
Basic specifications of the voice recorder are listed in Table 2.
Table 2. Specifications of the voice recorder SOROKA- 10Е.
№
Parameter
Description
1
Dimensions
50x14,2x16,2
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
Element power supply
Battery LR03 (1,5 V)
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
Sample rate
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
Sample rate
Typical operating time* (hours)
8 kHz
240
16 kHz
164
24 kHz
128
32 kHz
109
13
Duration of work, when
the resolution is 16-bit
without compression
Sample rate
Typical operating time* (hours)
8 kHz
218
16 kHz
141
24 kHz
112
32 kHz
89
14
Duration of work, when
the resolution is 20-bit.
Discretization fre-
quency
Typical operating time* (hours)
8 kHz
169
16 kHz
90