Vivotek IB9391-EHT - Page 219

VIVOTEK
User's Manual - 219
volume_external 0~100 4/4 Volume when take external microphone as
input source.
0: Minimum
100: Maximum
* Only available when the channel supports
external microphone (The related bit of
"capability_audio_extmic" is equal to 1).
mute 0, 1 1/4 0: Mute off
1: Mute on
gain
<Not recommended to use
this>
0~100 4/4 Gain of input.
(audioin_c<0~(n-1)>_source = linein)
* Reserved for compatibility, and suggest don't
use this since the version number
(httpversion) is equal or greater than 0301a.
* We replace "gain" with "volume_internal"
and "volume_external". More details, please
refer the parameter description of
"volume_internal" and "volume_external".
boostmic
<Not recommended to use
this>
0~100 4/4 Enable microphone boost.
Gain of input.
(audioin_c<0~(n-1)>_source = micin)
* Reserved for compatibility, and suggest don't
use this since the version number
(httpversion) is equal or greater than 0301a.
* We replace "boostmic" with
"volume_internal" and "volume_external".
More details, please refer the parameter
description of "volume_internal" and
"volume_external".
s0_codectype aac4, gamr, g711,
g726
(Available codec are
listed in
"capability_audioin_
codec")
4/4 Set audio codec type for input.
aac4: Advanced Audio Coding (AAC)
gamr: Adaptive Multi-Rate (AMR)
g711: G.711
g726: G.726
s0_aac4_bitrate 16000,
32000,
4/4 Set AAC4 bitrate in bps.