Voicetronix Programming Guide
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# VOX Functions

The VPBAPI allows the user to control the VOX firmware for each channel.

`vpb_getvox()`
`vpb_setvox()`

The VOX algorithm switches on when the audio level exceeds onlevel. When the audio level falls beneath offlevel, a counter is started. When the counter exceeds runon milliseconds, the VOX algorithm switches off. The overload level is defined as 0 dB, the default on and off VOX levels are -12 and -18 dB respectively. The default runon duration is 2000 ms. The VOX parameters may be re-programmed using the `vpb_setvox()` function.

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