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Speech Technology Center ANF II Operating Manual

Portable device for sound cleaning and speech signals recording
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ANF II
Portable device for sound cleaning and
speech signals recording
STC-H474
Operating manual

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Summary of Contents for Speech Technology Center ANF II

  • Page 1 ANF II Portable device for sound cleaning and speech signals recording STC-H474 Operating manual...
  • Page 2 Any such amendments will be published in a new edition of the Gnome manual and on the company’s website: http://www.speechpro.com. No part of this document can be copied or reproduced in any manner without the written permission of the Speech Technology Center.

  • Page 3: Table Of Contents

    CONTENTS INTRODUCTION ....................................3 General provisions ......................................3 Operation instructions ....................................3 Typography conventions ................................... 3 Copyrights ........................................4 Warranty .......................................... 4 1 DEVICE MAIN FEATURES ................................. 5 1.1 Purpose ........................................5 1.2 About the product ....................................5 1.3 Functions ........................................5 1.4 Settings of recording and playback channels ..........................
  • Page 4 CONTETS 5.4.3 Recorder timer menu ......................................24 5.4.4 Overflow protection menu ....................................26 5.4.5 Security menu ........................................27 5.4.6 Date and time menu ......................................28 5.4.7 Network settings ........................................28 5.4.8 Other settings menu ......................................31 5.5 Utilities menu ......................................33 5.6 Filters ........................................
  • Page 5 CONTETS 7.9.4 Recorder timer ........................................62 7.9.5 Overflow protection ......................................63 7.9.6 Security ............................................. 63 7.9.7 Date and time ........................................64 7.9.8 Network settings ........................................64 7.9.9 Other settings ........................................65 7.9.10 Default settings ........................................65 7.10 Journals tab ......................................66 7.11 Firmware tab .......................................

  • Page 6: Introduction

    INTRODUCTION INTRODUCTION General provisions The document is intended for users of the ANF II portable device for sound processing and speech signals recording. The manual describes operation, setting, and functions of the device. Operation instructions The device must be operated according to the manual.

  • Page 7: Copyrights

    INTRODUCTION Copyrights Microsoft, Windows, Windows® Internet Explorer® are trademarks of the Microsoft Corporation. The official Windows is the abbreviation for Microsoft Windows Operating System. Windows XP is the abbreviation of Microsoft Windows XP Home Edition/Professional. Mozilla Firefox® is the registered trademark of Mozilla Corporation. Opera®...

  • Page 8: Device Main Features

    DEVICE MAIN FEATURES Purpose ANF II is a portable device for sound cleaning and speech signals recording, it is a professional audio-recording device for two-channel record, processing and playback of speech signals. ANF II allows improving the quality and intelligibility of speech signals, recorded and uploaded to removable memory card.

  • Page 9: Settings Of Recording And Playback Channels

    DEVICE MAIN FEATURES Settings of recording and playback channels Characteristics Value Recording channels number Built-in microphones Type electret Susceptibility level - 55 dB Noise floor maximum 28 dB Recording format РСМ 16 and 24 bit without compression РСМ 8 bit with compression according to µ-law Sample rate 44.1 (CD Audio format), 16, 8 kHz Harmonic distortion coefficient—recording through microphone input...

  • Page 10: Design Philosophy

    DESIGN PHILOSOPHY DESIGN PHILOSOPHY Device view – Figure 1 Device view The device consists of the following elements: 1 – Front panel of the device with controls; 2 – Cover of the batteries compartment; 3 – Built-in dynamic; 4 – Back panel with plugs.

  • Page 11: Device Front Panel

    DESIGN PHILOSOPHY Device front panel Figure 2 – Device front panel There is the details about device elements on the front panel (see Table 1). Table 1 – Labels of the elements on the front panel № Label Description VOLUME L/R Volume control.

  • Page 12: Device Back Panel

    DESIGN PHILOSOPHY Device back panel Figure 3 – Device back panel There is the details about device elements on the back panel (see Table 2). Table 2 – Labels of the elements on the back panel of the device № Label Description S/PDIF IPUT...

  • Page 13: Getting Started

    GETTING STARTED GETTING STARTED Power supply Inserting batteries 3.1.1 To replace batteries, do the following: 1. Use the ON/OFF switch (figure 3, position 22) to turn off the device. 2. Open the cover of the batteries compartment (figure 3, position 20). 3.

  • Page 14: Memory Card

    GETTING STARTED Memory card Suitable memory cards 3.2.1 Recorded information is stored on removable nonvolatile SDHC (Secure Digital High-Capacity) memory card with capacity up to 32 GB (figure 6). For information storage, the FAT 32 file system is used. You can find the list of compatible SDHC memory cards in appendix B. Figure 6 –...

  • Page 15: Connecting Headphones

    GETTING STARTED Connecting headphones You can use headphones to control the audio signal during the recording or playback. To connect the headphones use the Headphones socket (figure 2, position 13), which is situated on the front panel of the device. The headphones must have TRS cable (figure 11).

  • Page 16: Connecting To Local Network

    GETTING STARTED Connecting to local network To connect the device to local network, use the ETHERNET jack (figure 3, position 24). For connection is used standard RJ45 cable (figure 16). Figure 16 – Cable for connection to local network RJ45 phone cable has a latch. To unplug a cable press on that latch. Connecting to USB-port You can connect the device to the PC through the USB port (figure 3, position 29).

  • Page 17: Controls And Indicators

    CONTROLS AND INDICATORS CONTROLS AND INDICATORS Controls Power switch 4.1.1 Use ON/OFF power switch (figure 3, position 22) on the back panel to turn power supply on and off. When the switch is set in the ON position, the display will be turned on (figure 2, position 2). Navigation buttons 4.1.2 Use navigation buttons...

  • Page 18: Indicators Of The Recording Level

    CONTROLS AND INDICATORS You can see the LCD and main menu of the system in the figure 21. There are four sections of the LCD: 1 – In that section, you can see icons, which show parameters of the current working mode.

  • Page 19: Multilevel Menu

    MULTILEVEL MENU MULTILEVEL MENU Multilevel menu structure Using navigation buttons (figure 2, position 3), you can open the following menus (figure 22): 1. Filters– 2. Browse SD-card – 3. Settings – 4. Utilities – 5. Lines selection – Figure 22 – Navigation buttons and menus Use the MENU button (figure 2, position 4) to go back to the higher level of the menu.

  • Page 20: Navigation Order In The Multilevel Menu

    MULTILEVEL MENU Navigation order in the multilevel menu In the figure 23 you can see an example of the navigation through the multilevel menu. Press to open the Lines selection menu. Use buttons to select the required menu command. For example, Input source.

  • Page 21: Sd-Card Menu

    MULTILEVEL MENU SD-card menu The information is stored on the memory card in hierarchical structure. In the process of the recording, the system automatically creates folders with names, which consist of the date when the recording was started. For example, 2009-12-24. Inside every folder in the process of the recording, the system automatically creates files with names, which consist of the time of recording start.

  • Page 22: Settings Menu

    MULTILEVEL MENU Settings menu Use the Settings menu to control and set all required for playback and recording parameters. To open the Settings menu (figure 25), press the button (figure 2, position 3). Use the Settings menu to set the following groups of parameters: 1.
  • Page 23 MULTILEVEL MENU Setting sample rate Sample rate parameter defines the frequency of signal sampling by its digitization. buttons to select the proper value of the parameter: 8, 16, or 44.1 kHz. Press to save the selected value of the parameter. Use the MENU button to return to the Audio settings menu without saving any changes.
  • Page 24 MULTILEVEL MENU Setting split files Split files defines maximum length of audio record. buttons allow to select the required parameter: 15 or 30 minutes; 1, 3 or 5 hours. Press to save the selected value of the parameter. Use the MENU button to return to the Audio settings menu without saving any changes.

  • Page 25: Voice Activation

    MULTILEVEL MENU Restore recording Restore recording menu enables or disables recording resume after device switching off and then switching on. buttons allow to select the required parameter: Disabled. Disables recording resume. Enabled. Enables recording resume. Press to save the selected value of the parameter.
  • Page 26 MULTILEVEL MENU Setting start threshold Start threshold defines the level of the input signal (in dB), the exceeding of which starts the recording. buttons allow to select the required parameter in a range from 0 to 72 dB with 1 dB pitch.

  • Page 27: Recorder Timer Menu

    MULTILEVEL MENU Setting stop delay Stop delay defines the period (in ms) from the moment when voice activation stops the recording, till the end of the recording. buttons allow to select the required parameter in a range from 500 to 10000 ms with 500 ms pitch.
  • Page 28 MULTILEVEL MENU Start time Start time defines the date and time of the recording start. buttons to select the field you want to change. buttons to increase or decrease the value of the field. Press to save the selected value of the parameter.

  • Page 29: Overflow Protection Menu

    MULTILEVEL MENU Overflow protection menu 5.4.4 In the Overflow protection menu you can turn on or off the following methods of protection from overflow: 1. Auto delete old files 2. Auto empty recycle bin To select a parameter use buttons. To open possible values of selected parameter press Figure 44 –...

  • Page 30: Security Menu

    MULTILEVEL MENU Security menu 5.4.5 Security In the Security menu there are three commands available: 1. Autolock buttons. Lock the navigation buttons. 2. PIN code protection. In active state to unlock buttons you will need to enter the PIN. 3. Change PIN code. Edit (change) the PIN. To select a parameter use buttons.

  • Page 31: Date And Time Menu

    MULTILEVEL MENU Changing PIN Change PIN code allows you to change the PIN. Enter the old PIN in the first text box and the new one in the second text box. Use buttons to select number position. buttons to increase or decrease selected number.
  • Page 32 MULTILEVEL MENU USB-connection settings The USB parameter allows to check and change settings of the device when it is connected to the PC through the USB-port. To select value use buttons. To go from one field to another use buttons. Press to save the selected value.
  • Page 33 MULTILEVEL MENU Obtain IP-address The Obtain IP-address parameter allows to check and change the way of the IP-address obtaining. 1. Manually – set the IP-address manually. 2. Automatically – the IP-address is obtained automatically. It is used if the system has the DHCP-server and computers obtain addresses automatically.

  • Page 34: Other Settings Menu

    MULTILEVEL MENU Default gateway The Default gateway allows setting the address of the default gateway. To select value use buttons. To go from one field to another use buttons. Press to save the selected value. Figure 58 – Network settings menu. Ethernet. Default gateway The DNS parameter allows setting the address of the DNS-server.
  • Page 35 MULTILEVEL MENU Display backlights Display backlights sets the time of the display backlights from the moment of the last press of any navigation button. buttons to select the required value. Press to save the selected value. Use the MENU button to return to the Other settings menu without saving any changes.

  • Page 36: Utilities Menu

    MULTILEVEL MENU Utilities menu To open the Utilities menu (figure 64) select the button in main menu. The Utilities menu allows to perform the following operations: 1. Lock buttons. Lock buttons to prevent them from being accidentally pressed. 2. Empty recycle bin. Clean the recycle bin. 3.
  • Page 37 MULTILEVEL MENU Processing list Use the Processing list utility to view the list of files queued for processing. Every file is processed according to the filter settings, which were set when a file was sent to the processing. buttons to run a utility or to deactivate it.
  • Page 38 MULTILEVEL MENU Errors log Use the Errors log utility to view error messages. buttons to move through the log. Use the MENU button to return to the Utilities menu without saving any changes. Figure 70 – Utilities menu. Errors log Information Use the Information utility to check the information about the device.

  • Page 39: Filters

    MULTILEVEL MENU Filters Use the Filters menu to adjust filters and presets. To begin working with filters select Settings (figure Figure 72 – Filters menu Broadband noise filter 5.6.1 The menu of the broadband noise filter is available in the Filters menu (figure 73). Figure 73 –...
  • Page 40 MULTILEVEL MENU Reverberation (figure 75). Use this mode in resonant and reverberating rooms. It can also be useful in unsteady noise conditions (on the street or in the conditions of background music). Figure 75 – Broadband filter. Reverberation Rumble filter (figure ).

  • Page 41: Harmonic Reject Filter

    MULTILEVEL MENU Harmonic reject filter 5.6.2 The menu of the harmonic reject filter is available in the Filters menu. The filter can be disabled or enabled (figure ). The harmonic reject filter increases the comfort of the speech signal perception, improves its quality and intelligibility in conditions of tonal interference.
  • Page 42 MULTILEVEL MENU State (figure ). Turn the equalizer on or off. Figure 81 – Equalizer menu. Equalizer state Type Parametric Equalizer (figure ) allows increasing or reducing a signal in a range of low or high frequencies. You can adjust parametric equalizer using control parameters.

  • Page 43: De-Clicker

    MULTILEVEL MENU Low gain, High gain (dB) (figure ) – ratio of signal increase/decrease (dB/octave) in the range of low, high frequencies. Figure 85 – Equalizer menu. High gain, Low gain De-clicker 5.6.4 The menu of the De-clicker is available in the Filters menu (figure Figure 86 –...

  • Page 44: Speech Level Enhancer

    MULTILEVEL MENU Speech level enhancer 5.6.5 The speech level enhancer automatically increases comfort of the speech signal perception and improves its intelligibility by adjusting levels of loud and quiet (far and near) speaker. To turn or off the speech level enhancer use the menu figure 88. Figure 88 –...
  • Page 45 MULTILEVEL MENU Reference channel (right or left) (figure 91). The parameter, which allows selecting a channel, containing speech of the required speaker as a reference channel (channel, which comes from the noise source). Figure 91 – Reference noise filter menu. Reference channel Delay (ms) (figure 92).

  • Page 46: Changer

    MULTILEVEL MENU V changer 5.6.7 Use the V-changer to change speaker’s voice with no possibility to restore the original voice. The v- changer can change the voice in the real-time mode in the point-to-point channel and for existing records. V-changer is not working simultaneously with noise filters.

  • Page 47: Presets

    MULTILEVEL MENU Presets 5.6.8 Presets are filter settings for particular work conditions. Default presets has the “!” mark in the beginning of their names (for example, “!Street noise”) and cannot be deleted or edited. You can also save your own settings of filters as presets. To select a preset go to the Filters menu (figure 97).

  • Page 48: Lines Selection Menu

    MULTILEVEL MENU Lines selection menu The Lines selection menu (figure 101) is used for input and output lines control. To open the menu, press (figure 2, position 3). Figure 101 – Lines selection menu In the Lines selection menu, you can change the following parameters: 1.
  • Page 49 MULTILEVEL MENU Monitor The Monitor parameter is used to select the monitor. buttons to select the required recording source. Press to save the selected parameter. Use the MENU button to return to the Lines selection menu without saving any changes. Figure 103 –...

  • Page 50: Operation

    OPERATION OPERATION Turning the device on Before you turn on the device, prepare it according to the recommendations from the part 3. To turn on/off the device use the ON/OFF switch (figure 3, position 22). The process of the software loading will be displayed by the indicator at the bottom part of the display (figure 106). Wait, until the appearance of the main menu on the display (see figure 21).

  • Page 51: Sound Recording

    OPERATION Sound recording Quick recording 6.3.1 For quick audio recording, perform the following operations: 1. Install batteries or connect the device to power source. 2. Insert formatted memory card. 3. Press the RECORD button (figure 2, position 6). 4. Perform the recording with default settings. 5.

  • Page 52: Recording In The Voice Activation Mode

    OPERATION In the process of recording, you can change recording level using Recording level controls for every channel separately (see figure 2, position 7, and position 9). When you use Recording level controls, recording parameters can change in a range from 0 to 60 dB. You can see those parameters at the bottom part of the screen (figure 109).

  • Page 53: Playback Of Recorded Audio Files

    OPERATION Playback of recorded audio files Playback by device 6.4.1 1. Press the MENU button to go to the main menu of the device. to go to the Lines selection menu. 2. Press 3. According to the p. 5.7, in the Lines selection menu select the required monitor and a variant of stereo signal output for its playback through the built-in dynamic.

  • Page 54: Device Controlling Via Pc

    DEVICE CONTROLLING VIA PC DEVICE CONTROLLING VIA PC Software requirements Device software is compatible with Microsoft® Windows® XP, Windows® Vista®, Windows® 7, Windows® 8 or Linux. To use device software you need: • PC with the USB-port • Standard software for wav files playback •...

  • Page 55: Application Main Window Tabs

    Appendix B. Application main window tabs If the connection between the device and the PC is established, you will see the window of the ANF II, which contains seven tabs: SD-card, Monitor, Filters, Information, Settings, Journals and Firmware.
  • Page 56 DEVICE CONTROLLING VIA PC If there is no SD-card installed, you will see the message that there is no SD-card detected and the audio records folders are not found. To play phonograms directly on the page, use a player in the Play field. For this purpose, Adobe Flash-player should be installed on a PC.

  • Page 57: Cleaning Recycle Bin

    DEVICE CONTROLLING VIA PC Figure 121 – Information about the selected file You can move selected folders and its content to the recycle bin (figure 122). To perform this, select checkboxes with names of required files or select the checkbox in the head of file list and click Move to recycle bin (see figure 116).

  • Page 58: Information Tab

    DEVICE CONTROLLING VIA PC Information tab In the Information (figure 125) tab, you can check the current device settings. Figure 125 – Information tab Monitor tab Use the Monitor tab (figure 126) to check and control the condition of monitor. Figure 126 –...

  • Page 59: Broadband Noise Filter

    DEVICE CONTROLLING VIA PC To control and adjust settings use the following elements of the graphic interface: Drop-down list (list). Allows to select the parameter value from the beforehand created list. Slider. Allows to set the parameter value in the beforehand specified range. Option.

  • Page 60: Equalizer

    DEVICE CONTROLLING VIA PC Equalizer 7.8.3 In the Equalizer section (figure 129), you can control and change current Equalizer settings. Figure 129 – Filters tab. Equalizer The State options allow selecting one of equalizer states: enabled or disabled. The Type options allow selecting one of equalizer types: parametric or adaptive. The Low frequency Hz) slider allows setting threshold frequency of the signal increase/decrease in low frequencies range.

  • Page 61: Stereo Filter

    DEVICE CONTROLLING VIA PC Stereo filter 7.8.6 In the Reference noise filter section (figure 132) you can control and change current settings of stereo filter. Figure 132 – Filters tab. Stereo filter The State options allow selecting one of reference noise filter states: enabled or disabled. The Reference channel options allow selecting left or right reference channel.

  • Page 62: Settings Tab

    DEVICE CONTROLLING VIA PC Settings tab Use the Settings tab to adjust all required for playback and recording parameters. It contains the following sections: 1. Audio settings (figure 136) 2. Lines selection (figure 138) 4. Voice activation (figure 139) 5. Recorder timer (figure 141, 142) 6.

  • Page 63: Lines Selection

    DEVICE CONTROLLING VIA PC Figure 137 – Warning message about inappropriate compression method The Channel mode options allow selecting stereo or mono mode. The Split files list allows selecting the limits on the continuous recording duration: 30 min.; 1 hour; hours; 5 hours. The Save files list allows to select, which files must be saved: original, cleaned or both.

  • Page 64: Voice Activation

    DEVICE CONTROLLING VIA PC Voice activation 7.9.3 In the Voice activation section (figure 139) you can control and change current settings of voice activation. Figure 139 – Settings tab. Voice activation The State options allow selecting the state of voice activation: on or off. The Start threshold slider allows to adjust the level of the input signal (in dB), the exceeding of which, starts the recording.
  • Page 65 DEVICE CONTROLLING VIA PC Recorder timer 7.9.4 In the Recorder timer section (figure 141 and 142) you can control and change current settings of the recording timer. Figure 141 – Settings tab. Recorder timer Figure 142 – Settings tab. Recorder timer with opened calendar Start time.
  • Page 66 DEVICE CONTROLLING VIA PC Overflow protection 7.9.5 In the Overflow protection section (figure 143) you can control and change current settings of the SD-card memory overflow protection. Figure 143 – Settings tab. Overflow protection There are two variants of protection: Auto empty recycle bin.
  • Page 67 DEVICE CONTROLLING VIA PC Date and time 7.9.7 In the Date and time section (figure 146) you can control and change the clock of the device. Figure 146 – Settings tab. Date and time button opens dialog box where you can set the date and time (figure 147). Figure 147 –...

  • Page 68: Default Settings

    DEVICE CONTROLLING VIA PC In the Mask (Ethernet) box you can enter the subnet mask (if the static IP-address is selected). In the Gateway box you can enter the address of the default gateway (if the static IP-address is selected). In the DNS-server box you can enter the address of the DNS-server (if the static IP-address is selected).

  • Page 69: Journals Tab

    DEVICE CONTROLLING VIA PC Journals tab 7.10 In the Journals tab (figure 152) you can see the content of the device inner log. Figure 152 – Application main window. Journals tab To clean the journal, click the button. To save the content of the journal into a file, which you can send to technical support, click the button.

  • Page 70: Disconnecting Device From Pc

    DEVICE CONTROLLING VIA PC Disconnecting device from PC 7.12 To disconnect the device, perform the same operations as for any other USB-device: vice 1. Click the icon in the taskbar, and then click Safely remove USB de (figure 154). Figure 154 – Taskbar. Safely remove USB device 2.

  • Page 71: Browser Settings For Program Quick Launch

    APPENDIX APPENDIX A BROWSER SETTINGS FOR PROGRAM QUICK LAUNCH To launch the device executive program, follow the instructions listed below. Examples are given with respect to the browser Mozilla Firefox 11.0. A.1 Home page using In the main browser menu, select the Tools tab (see Figure A.1), click Options, and in the Options window (Figure A.2) select the General tab.

  • Page 72: A.2 Bookmarks Usage

    APPENDIX A.2 Bookmarks usage To launch the program quickly, select the Bookmark This Page item form the contextual menu of browser tab (see Figure A.3). Figure A.3 – Contextual menu of the tab In the dialog box (see Figure A.4), click Done. Figure A.4 –...

  • Page 73: Certificate Adjustment In Internet Explorer

    APPENDIX APPENDIX B CERTIFICATE ADJUSTMENT IN INTERNET EXPLORER To operate with the device in Internet Explorer 8 and Internet Explorer 9, it is necessary to install the certificate. Certificate installation procedure is described below. Start working with the device, as described in Section 7.3. After entering the PIN-code, and clicking Enter, an error message will appear.
  • Page 74 APPENDIX Please return to the PIN-code input page, and re-run the operation program of the device. Select Certificate Error in the browser address bar, and then click View Certificates (Fig. B.3). Figure B.3. Choice of “View certificates” In the Certificate window, click Install Certificate… (see Figure B.4). Figure B.4.
  • Page 75 APPENDIX In the Certificate Import Wizard, click Place all certificates in the following store, and select Trusted Root Certification Authorities as a repository (Fig. B5). Figure B.5. Choice of certificate store In the Security Warning window, confirm the certificate installation, and in the Internet Options dialog window on the Advanced tab, click to clear the Warn about certificate address mismatch check box (Figure B.6) Figure B.6.

  • Page 76: List Of Compatible Memory Cards

    APPENDIX APPENDIX C LIST OF COMPATIBLE MEMORY CARDS The device supports Secure Digital (SD) cards and Secure Digital High-Capacity (SDHC) memory cards. There are following SD and SDHC cards with up to 32 GB capacity, which compatible with the device: –...

  • Page 77: Recording Recommendations

    APPENDIX APPENDIX D RECORDING RECOMMENDATIONS To receive high-quality audio records, we recommend following these rules: 1. Use the stereophonic recording mode without the compression with the 44,1kHz sample rate. 2. Usage of monophonic recording mode allows to record longer files on the same hard disk space. 3.
  • Page 78 Documentation version 06-01 07 2013 Software version...

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