Laboratory2, LTD
1 Product specification and description of its operation
1.1
Purpose of the voice recorder.
The voice recorder Soroka-16E is designed to record audio with the built-in/external digital
MEMS microphone 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 - 16E.
№
Parameter
Description
1
Dimensions
80x40x8,5 mm
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
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)
(internal microphone /
external microphone)
At least ** (hours)
(internal microphone /
external microphone)
8 kHz
1122/801
673/480
16 kHz
748/553
488/331
24 kHz
550/410
330/246
32 kHz
440/319
246/191
13
Duration of work, when
the resolution is 16-bit
without compression
Sample rate
Typical operating
time* (hours)
(internal microphone /
external microphone)
At least ** (hours)
(internal microphone /
external microphone)
8 kHz
924/702
554/421
16 kHz
484/370
290/222
24 kHz
451/347
270/208
32 kHz
352/281
211/169
14
Duration of work, when
the resolution is 20-bit.
Sample rate
Typical operating
time* (hours)
(internal microphone /
external microphone)
At least ** (hours)
(internal microphone /
external microphone)
8 kHz
748/578
448/347
16 kHz
418/304
250/182
24 kHz
297/241
178/145
32 kHz
209/175
125/105
15
Suppression outside the band of operating
frequency range while tuning an octave
at least 60 dB
16
Average life of the voice recorder
for at least 2 years
Page4
Version of 14.05.2018
