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Vivox Core SDK

Vivox Core SDK

Voice activity detection

Understand voice activity detection in Vivox.
읽는 시간 1분최근 업데이트: 2달 전
Voice activity detection detects the presence or absence of speech in an application. In most cases, customers do not need to adjust the default voice activity detection (VAD) settings of the Vivox SDK. Before manually tuning the VAD settings, test your setup using Automatically Adjusted VAD. Automatically Adjusted VAD is better at detecting a player speaking than the default VAD settings.
참고
Use 
vad_auto
when a player uses the onboard microphone and speakers on PCs and mobile devices. Players using high-quality Bluetooth earbuds, headsets or USB headsets might not benefit from 
vad_auto
as many of those devices have built-in noise reduction or directional microphones that already produce a clean voice signal.
Set 
vad_auto
to 1 in the 
vx_req_aux_set_vad_properties
call to enable automatic adjustment. See the example shown below to enable 
vad_auto
: 
vx_req_aux_set_vad_properties_t *req;vx_req_aux_set_vad_properties_create(&req);req->vad_hangover = 2000;req->vad_sensitivity = 43;req->vad_noise_floor = 576;req->vad_auto = 1;vx_issue_request(&req->base);
참고
Although the VAD ignores the other settings when 
vad_auto
is enabled, you must provide valid parameters or the call will return an error. This example provides the default values for the 
vad_hangover
, 
vad_sensitivity
, and 
vad_noise_floor
.
If the Automatically Adjusted VAD does not help, disable 
vad_auto
by setting it to 0 and provide values for 
vad_hangover
, 
vad_sensitivity
, and 
vad_noise_floor
.
참고
Changes to the VAD noise floor settings do not affect currently joined channels. If the ability to change VAD settings is available to the end-user, indicate that noise floor changes only take effect in the next voice session or only allow changing the noise floor channel when the client is not in-channel.