TeamTalk 5 C-API DLL Version 5.15A
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WebRTCAudioPreprocessor Struct Reference

WebRTC's audio preprocessor. More...

#include <TeamTalk.h>

Public Attributes

struct { 
 
   TTBOOL   bEnable 
 Enable pre-amplifier. Replacement for TT_SetSoundInputGainLevel() More...
 
   float   fFixedGainFactor 
 Gain factor. Default: 1. More...
 
preamplifier 
 Configuration of WebRTC pre-amplifier.
 
struct { 
 
   TTBOOL   bEnable 
 Enable WebRTC echo canceller. The WebRTC echo canceller requires sound input and output devices are initialized using TT_InitSoundDuplexDevices(). This is because both input and output device must use the same sample rate. More...
 
echocanceller 
 Configuration of WebRTC's echo canceller. See also TT_SetSoundDeviceEffects()
 
struct { 
 
   TTBOOL   bEnable 
 Enable WebRTC noise suppression. More...
 
   INT32   nLevel 
 Noise suppression level. 0 = Low, 1 = Moderate, 2 = High, 3 = VeryHigh. Default: 1. More...
 
noisesuppression 
 Configuration of WebRTC's noise suppression. See also SpeexDSP.
 
struct { 
 
   TTBOOL   bEnable 
 Use WebRTC's voice detection to trigger CLIENTEVENT_VOICE_ACTIVATION. More...
 
voicedetection 
 Configuration of WebRTC's voice detection.
 
struct { 
 
   TTBOOL   bEnable 
 Enable WebRTC's fixed digital gain. WebRTC's automatic gain control (AGC) More...
 
   struct { 
 
      float   fGainDB 
 Gain level in dB. Range: 0 <= x < 50. Default: 0. More...
 
   }   fixeddigital 
 Gain level for AGC. Only active when bEnable is true. More...
 
   struct { 
 
      TTBOOL   bEnable 
 
      float   fInitialSaturationMarginDB 
 
      float   fExtraSaturationMarginDB 
 
      float   fMaxGainChangeDBPerSecond 
 
      float   fMaxOutputNoiseLevelDBFS 
 
   }   adaptivedigital 
 Configuration for fine tuning gain level. More...
 
gaincontroller2 
 Configuration of WebRTC's gain controller 2 for AGC.
 
struct { 
 
   TTBOOL   bEnable 
 Enable level estimater. When enabled TT_GetSoundInputLevel() will return a value based on WebRTC's level estimater. A WebRTC level estimater value of 0 will result in SOUND_VU_MAX and level estimater value of 127 will return SOUND_VU_MIN. More...
 
levelestimation 
 Configuration of WebRTC's level estimater.
 

Detailed Description

WebRTC's audio preprocessor.

Use WebRTC's audio preprocessor, https://webrtc.org

Note that WebRTC's can only operate on 10 msec audio frame, so nTxIntervalMSec in AudioCodec must a multiple of 10.

WebRTCAudioPreprocessor is recommended to TT_SetSoundDeviceEffects() on desktop platforms.

Activate WebRTCAudioPreprocessor by calling TT_SetSoundInputPreprocessEx().

Definition at line 1316 of file TeamTalk.h.

Member Data Documentation

◆ bEnable

TTBOOL WebRTCAudioPreprocessor::bEnable

Enable pre-amplifier. Replacement for TT_SetSoundInputGainLevel()

Enable level estimater. When enabled TT_GetSoundInputLevel() will return a value based on WebRTC's level estimater. A WebRTC level estimater value of 0 will result in SOUND_VU_MAX and level estimater value of 127 will return SOUND_VU_MIN.

Enable WebRTC's fixed digital gain. WebRTC's automatic gain control (AGC)

Use WebRTC's voice detection to trigger CLIENTEVENT_VOICE_ACTIVATION.

Enable WebRTC noise suppression.

Enable WebRTC echo canceller. The WebRTC echo canceller requires sound input and output devices are initialized using TT_InitSoundDuplexDevices(). This is because both input and output device must use the same sample rate.

TT_EnableVoiceActivation() must still be called to activate voice detection event CLIENTEVENT_VOICE_ACTIVATION.

Enabling WebRTC's voice detection invalidates use of TT_SetVoiceActivationLevel()

Definition at line 1323 of file TeamTalk.h.

◆ fFixedGainFactor

float WebRTCAudioPreprocessor::fFixedGainFactor

Gain factor. Default: 1.

Definition at line 1325 of file TeamTalk.h.

◆ [struct]

struct { ... } WebRTCAudioPreprocessor::preamplifier

Configuration of WebRTC pre-amplifier.

◆ [struct]

struct { ... } WebRTCAudioPreprocessor::echocanceller

Configuration of WebRTC's echo canceller. See also TT_SetSoundDeviceEffects()

◆ nLevel

INT32 WebRTCAudioPreprocessor::nLevel

Noise suppression level. 0 = Low, 1 = Moderate, 2 = High, 3 = VeryHigh. Default: 1.

Definition at line 1346 of file TeamTalk.h.

◆ [struct]

struct { ... } WebRTCAudioPreprocessor::noisesuppression

Configuration of WebRTC's noise suppression. See also SpeexDSP.

◆ [struct]

struct { ... } WebRTCAudioPreprocessor::voicedetection

Configuration of WebRTC's voice detection.

◆ fGainDB

float WebRTCAudioPreprocessor::fGainDB

Gain level in dB. Range: 0 <= x < 50. Default: 0.

Definition at line 1375 of file TeamTalk.h.

◆ [struct]

struct { ... } WebRTCAudioPreprocessor::fixeddigital

Gain level for AGC. Only active when bEnable is true.

◆ fInitialSaturationMarginDB

float WebRTCAudioPreprocessor::fInitialSaturationMarginDB

Definition at line 1384 of file TeamTalk.h.

◆ fExtraSaturationMarginDB

float WebRTCAudioPreprocessor::fExtraSaturationMarginDB

Definition at line 1386 of file TeamTalk.h.

◆ fMaxGainChangeDBPerSecond

float WebRTCAudioPreprocessor::fMaxGainChangeDBPerSecond

Definition at line 1388 of file TeamTalk.h.

◆ fMaxOutputNoiseLevelDBFS

float WebRTCAudioPreprocessor::fMaxOutputNoiseLevelDBFS

Definition at line 1390 of file TeamTalk.h.

◆ [struct]

struct { ... } WebRTCAudioPreprocessor::adaptivedigital

Configuration for fine tuning gain level.

◆ [struct]

struct { ... } WebRTCAudioPreprocessor::gaincontroller2

Configuration of WebRTC's gain controller 2 for AGC.

◆ [struct]

struct { ... } WebRTCAudioPreprocessor::levelestimation

Configuration of WebRTC's level estimater.