Enabling/Disabling Voice Activated Intercom (Default: Disable); Enabling/Disabling Hd Intercom (Default: Enable); Setting Intercom Vox Sensitivity (Default: 3) - Sena SF4 User Manual

SF Series
15.6 Enabling/Disabling Voice Activated Intercom
(Default: Disable) (SF2, SF4)
If this feature is enabled, you can initiate an intercom conversation
with the last connected intercom friend by voice. When you want to
start intercom, say a word such as "Hello" loudly or blow air into the
microphone. If you start an intercom conversation by voice, the
intercom terminates automatically when you and your intercom friend
remain silent for 20 seconds. However, if you manually start an
intercom conversation by tapping the Center Button, you have to
terminate the intercom conversation manually.
However, if you start intercom by voice and end it manually by tapping
the Center Button, you will not be able to start intercom by voice
temporarily. In this case, you have to tap the Center Button to restart
the intercom. This is to prevent repeated unintentional intercom
connections by strong wind noise. After rebooting the SF2/SF4, you
can start intercom by voice again.
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15.7 Enabling/Disabling HD Intercom
(Default: Enable) (SF2, SF4)
HD Intercom enhances the two-way intercom audio from normal
quality to HD quality. HD Intercom will become temporarily disabled
when you enter into a multi-way intercom. If this feature is disabled,
the two-way intercom audio will change to normal quality.
Note:
1. The intercom distance of HD Intercom is relatively shorter than that of
normal intercom.
2. HD intercom is active only when Audio Overlay is disabled.

15.8 Setting Intercom VOX Sensitivity (Default: 3)

VOX sensitivity can be adjusted depending on your riding environment.
Level 5 is the highest sensitivity setting and 1 is the lowest.