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  1. BlackBerry Docs
  2. BlackBerry AtHoc
  3. BlackBerry AtHoc Integrations
  4. ATI Giant Voice System Installation and Configuration Guide
  5. Publish and verify the pre test alert templates
  6. Verify the serial communication
  7. Adjust the .wav file audio level

Adjust the .wav file audio level

IIM pre-recorded audio and text-to-speech audio tuning audio calibration must be performed in steps to calibrate the individual audio levels for pre-recorded audio (.wav file) play and text-to-speech.Some adjustments can be made by ear but can be more accurate if diagnostic tools are used. For radio-based systems, if a radio meter with an FM deviation scale can be used, the accuracy of the tuning can be more precise. For non-radio-based systems, a digital voltage meter can be used to read the levels of the transmitted audio.
Depending on the integration type, there can be different variables in the 
system_private.config
 file that need to be tuned. For ATI, the variables that typically require tuning are related to time delays, variables with “before” or “after”, and text-to-speech attributes variables with “TTS”.
  1. Adjust the 
    IIM
     Windows Audio Tool Tray Slider to approximately 25% as a starting point. The Giant Voice System Test template should be edited to use pre-recorded audio content, typically the Test GVS file. Observe the audio level and clarity in comparison with the manual activation baseline.
  2. Log in to the 
    BlackBerry AtHoc
     management system as an administrator.
  3. In the 
    Quick Publish
     section, select the 
    Giant Voice System Test
     template and click 
    Edit
    .
  4. In the 
    Mass Devices
     section, select 
    ATI Giant Voice
    .
  5. In the 
    Mass Devices
     section, click 
    Options
    .
  6. On the 
    Mass Devices Options
     screen, select 
    Pre-recorded Audio
     and then select 
    Test GVS
     from the list.
  7. Click 
    Apply
    .
  8. Click 
    Review and Publish
    .
  9. Review the settings and selections and click 
    Publish
    .
  10. Observe the operations of the following:
    • In the 
      IIM
       console window, the number of items in the index increases and that it starts processing the alert.
    • The REACT4000 or MassAlert™ software transmits the Public Address RTU Function.
    • The associated Giant Voice poles and the audio volume and clarity.
  11. Adjust the 
    IIM
     Windows Audio Tool Tray Slider to match the baseline audio level and clarity.
  12. Repeat steps 2 to 11 until the pre-recorded audio sounds close in volume and clarity to manual microphone announcements.