GNOME STC-H661 User manual

Operation Manual
Note to Customer
Gnome-PII
Portable Digital Stereo Recorder
STC-H661
Operation Manual

Gnome-PII
Note to Customer
Before getting started, please read this Operation Manual carefully. The Operation Manual will
allow you to use this device properly and safely.
In case you have any questions regarding device operation and use, please feel free to contact
STC Support or local resellers.
To contact Technical Support, use the following email: [e-mail]
Saint Petersburg
Phone: [phone]
Fax [phone]
Moscow
Phone: [phone]
Fax [phone]
You can also open a support ticket with us via our web portal:
http://www.speechpro.com/support_form/
The manufacturer retains the right to issue amendments to this Operation Manual following
any improvements to device design without any prior notification.
Any such amendments will be published in a new Operation Manual edition, as well as on STC
website: http://www.speechpro.com website.
Recent version on the Operation Manual is supplied on CD.

Operation Manual
3
Contents CONTENTS
INTRODUCTION ................................................................................................ 5
Typographic Conventions............................................................................................................5
Trademarks.................................................................................................................................5
1 BASIC DETAILS ............................................................................................. 6
1.1 Title, manufacturer...............................................................................................................6
1.2 Service Maintenance and Technical Support ........................................................................6
2 DEVICE PURPOSE .......................................................................................... 7
2.1 Purpose and Scope of Use.....................................................................................................7
2.2 Legal Warning ......................................................................................................................7
3 DATA PROTECTION......................................................................................... 7
4 SCOPE OF SUPPLY ......................................................................................... 8
4.1 Standard Package.................................................................................................................8
4.2 Advanced Package................................................................................................................8
5 SPECIFICATIONS ........................................................................................... 9
6 RECORDER DESIGN ...................................................................................... 10
6.1 Control Units, Indicators and Switches ..............................................................................10
6.2 Device Memory ...................................................................................................................10
6.3 Microphone Set...................................................................................................................11
6.4 USB Connecting Cable ........................................................................................................11
6.5 Power Supply......................................................................................................................11
6.5.1 GNOME-PII Battery ....................................................................................................12
6.5.2 Battery Charge ...........................................................................................................12
7 OPERATING THE DEVICE ............................................................................... 13
7.1 Default Configuration..........................................................................................................13
7.2 Getting Started...................................................................................................................13
7.3 Audio Recording..................................................................................................................13
7.3.1 Recording Hints..........................................................................................................13
7.3.2 Manual Recording.......................................................................................................14
7.3.3 Volume-Triggered Recording (VOX) ...........................................................................15
7.3.4 Scheduled Recording Mode.........................................................................................15
7.3.5 Loop Recording Mode .................................................................................................16
7.3.6 Recording Duration ....................................................................................................17
7.4 Recording Playback and Deletion........................................................................................17
7.4.1 Playback.....................................................................................................................17
7.4.2 File Deletion...............................................................................................................17
7.5 RESET Button .....................................................................................................................17
8 VOICE RECORDER MANAGER ......................................................................... 18
8.1 GNOME-PII Software and Its Functions..............................................................................18
8.2 Software Installation..........................................................................................................18
8.2.1 System Requirements.................................................................................................18
8.2.2 Driver Installation......................................................................................................18
9 VOICE RECORDER MANAGER ......................................................................... 20
9.1 Getting Started...................................................................................................................20
9.2 Application Main Screen.....................................................................................................20
9.3 Overview.............................................................................................................................21
9.3.1 Main Screen: Overview Area ......................................................................................21
9.3.2 Getting Public Key ......................................................................................................22

GNOME-РII
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9.3.3 Digital Signature Verification ....................................................................................22
9.3.4 Watermark Check.......................................................................................................23
9.3.5 Memory Formatting....................................................................................................24
9.3.6 Writing Manager to Device.........................................................................................24
9.3.7 Firmware Update........................................................................................................25
9.3.8 About..........................................................................................................................25
9.4 Settings ..............................................................................................................................25
9.4.1 Settings Area .............................................................................................................25
9.4.2 Signal Source .............................................................................................................26
9.4.3 Sampling Rate Area....................................................................................................27
9.4.4 Recording Format.......................................................................................................27
9.4.5 Volume-Triggered (VOX) Recording ...........................................................................27
9.4.6 Gain Control ...............................................................................................................28
9.4.7 Loop Recording...........................................................................................................29
9.4.8 Real-time Monitoring .................................................................................................29
9.4.9 Watermarks ...............................................................................................................29
9.4.10 Scheduled Recording ................................................................................................29
9.4.11 Erase/Playback Button .............................................................................................30
9.4.12 LEDs Status..............................................................................................................31
9.4.13 Profiles.....................................................................................................................31
9.4.14 Changing PIN............................................................................................................31
9.4.15 Setting Device Time .................................................................................................32
9.5 Recordings..........................................................................................................................33
9.5.1 The Recordings Area ..................................................................................................33
9.5.2 Toolbar .......................................................................................................................33
9.5.3 Recording List ............................................................................................................34
9.5.4 Recording Playback ....................................................................................................34
9.5.5 Deleting Recordings ...................................................................................................34
9.5.6 Copying Files to PC.....................................................................................................35
9.5.7 Digital Signature........................................................................................................35
9.6 Exiting the Application .......................................................................................................35
10 KNOWN ISSUES AND TROUBLESHOOTING .................................................... 36
11 OPERATING CONDITIONS ............................................................................ 36
12 TANSPORTATION AND STORAGE CONDITIONS ............................................... 36
13 MANUFACTURER WARRANTY ...................................................................... 37
14 CERTIFICATE OF ACCEPTANCE .................................................................... 38

Operation Manual
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INTRODUCTION
Typographic Conventions
The following typographic conventions are applicable to this Manual:
Formatting
Description
Normal
Guide body text.
Bold
Used for marking out software component names, as well as interface
element names (headers, buttons, etc.).
Bold Italic
Indicates file names and access paths.
Below there is a notification layout used in the Manual according to notification severity level.
Links to other documents in the body text.
Notes, important notices, and instructions obligatory for fulfilling.
Not fulfilling these requirements may potentially lead to hardware and software
malfunctions and failures.
Trademarks
Windows®is a trademark of Microsoft® Corporation.
Other company and product names mentioned in this document are the property of their
respective owners.

Gnome-PII
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1 BASIC DETAILS
1.1 Title, Manufacturer
Title:
Gnome P-II Portable Digital Stereo Recorder STC-H661
Manufacturer:
Speech Technology Center Ltd.
Address:
4A Ul. Krasutskogo,196084, Saint Petersburg
Phone:
[phone]
Fax:
[phone]
1.2 Service Maintenance and Technical Support
To contact Technical Support, use the following methods:
Email:
[email protected]
Web Portal:
http://www.speechpro.com/support_form
When contacting our Technical Support, please include the following details into your call/ticket:
Device title and version;
Device content;
Detailed issue description.

Operation Manual
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2 DEVICE PURPOSE
2.1 Purpose and Scope of Use
Gnome-PII Portable Digital Recorder is a professional sound recording unit providing high-quality
mono and stereo speech signal recording under difficult acoustic conditions.
Its extra small dimensions and weight, as well as user-friendly control, make it usable for a wide
range of customers and enable recording speech signals both indoors and outdoors.
Recording process is performed via either two onboard or two external microphones as well as
from hardware line outputs.
Channel distribution between source signals is performed manually. The recorded sound is stored
in the device internal flash memory.
Recording process may be controlled both manually and automatically.
Connecting the device to a PC enables recorded data playback, copying recordings to PC hard
drive and changing recorder options.
2.2 Legal Warning
Recordings made with the device are acceptable for speaker identification or other forensic
analysis purposes.
Before using the device, you are encouraged to make yourself familiar with any laws and
regulations regarding voice recording applicable to your country.
3 DATA PROTECTION
To protect recorded data from unauthorized use and disclosure, key recorder features (deleting
recorded data, modifying recording options, saving and playing recordings on a PC) can only be
performed by means of specially designed software.
Access to recordings is carried out via supplied software and protected with PIN.
The default settings do not involve PIN. Detailed information on PIN settings is described in
section 9.4.14.
After copying data to a PC hard drive, recorded data authentication is enabled via digital
signature (see section 9.3.3).

Operation Manual
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4 SCOPE OF SUPPLY
4.1 Standard Package
Title
Quantity
Gnome-PII Portable Digital Stereo Recorder STC-H661, internal battery, 16
GB onboard memory
1
USB cable
1
Software Installation Package on CD
1
Operation Manual
1
Shipping box
1
4.2 Advanced Package
Title
Quantity
Gnome-PII Portable Digital Stereo Recorder STC-H661, internal battery, 16
GB onboard memory
1
USB cable
1
Software Installation Package on CD
1
Operation Manual
1
Shipping box
1
Line-in cable
1
Microphone set with a remote control
1
Compact headphones
1
110-240 V, 50/60 Hz power supply from the AC
1
Desk microphone
1*
Shockproof case
1*
* If ordered.

Operation Manual
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5 SPECIFICATIONS
Spec
Value/Description
Number of channels
1 or 2
Internal hard drive space
16 GB
Recording standard
mono/stereo 16, 24 bit PCM
Data compression
μ or А law
Sampling rate
8000, 11025, 16000, 22050,
32000, 44100 Hz
Frequency response unevenness
2 dB max
Microphone input signal to noise ratio
80 dB min
Linear input signal to noise ratio
90 dB min
Microphone input distortion factor (at 1 kHz with
16 kHz sampling rate)
no compression
0.10 % max
double compression
1.00 % max
Linear input distortion factor (at 1 kHz with
16 kHz sampling rate)
no compression
0.01 % max
double compression
1.00 % max
Depth of AGC
30 dB
Volume-triggering threshold range
From 1 up to 60 dB
Internal microphone type
Electret
Internal microphone sensitivity
-55 dB
Internal microphone noise level
25 dB max
Rated microphone input signal level
200 mVeff
Rated linear input signal level
2 Veff
Rated output signal level
2 Veff
Operation duration
without charging
Recording duration with default settings (see section
7.1)
70 h
mode
standby mode
20000 h
volume-triggered recording
160 h
DC power supply voltage
5 V
Internal battery type
Li-Pol
Internal battery capacity
1100 mAh
Battery charging time
5 h max
Maximum recording duration (Stereo mode, 22 kHz sampling rate)
32 h
Maximum recording duration (Stereo mode, no compression, 16 kHz sampling
rate)
45 h
Recording mode current consumption
23 mA max
Volume-triggered recording current consumption
6 mA max
Standby current consumption
50 μA max
PC connection standard
USB 2.0
USB operation mode
High-speed
USB current consumption
450 mA max
External source current consumption
300 mA max
Data transfer rate
50 Mbit/s min
Deviation of the clock per day
5 s max
Dimensions
75.0х48.5х12.5 mm
Case
Shielding, metal
Weight (battery included)
70 g
Supported Microsoft®Windows versions
7, 8

Gnome-PII
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6 RECORDER DESIGN
6.1 Control Units, Indicators and Switches
The recorder comes in a black metal case. Line-in and line-out jacks are protected with rubber
plugs attached to the device case.
Device exterior with indication of parts is shown on Figure 1. Device part description is listed
Table 1.
Figure 1: Product exterior
Table 1: Device part description
No
Marking
Title
1
USB
USB port
2
Recording switch
3
OUT
3.5 headphone jack
4
IN
Mic jack
5
Internal mics
6
Battery charge level and recording mode LED indicator
7
Functional button (Erase/playback button)
8
RESET button
6.2 Device Memory
For recording storage, the eMMC embedded non-volatile memory system of 16 GB total capacity
is used in the device.
The storage keeps audio data for at least 10 years when the device is shut down.
You can delete all recordings from the device manually or use supplied software for selecting and
erasing recordings (see section 7.4.2).