2.2.1.28.1 Child Elements
The following table lists the child elements of the Signal element.
Element |
Type |
Available |
Description |
Units |
---|---|---|---|---|
SignalLevel |
xs:int |
Yes |
The average energy level of received or sent audio classified as speech. |
dB |
NoiseLevel |
xs:int |
Yes |
The average energy level of received or sent audio classified as noise. |
dB |
EchoReturn |
xs:int |
No |
Not used. |
|
SpeakerFeedbackMicIn<252> |
xs:int |
Yes |
Signal level of the leakage of Loudspeaker or Headphone output into the microphone input. |
dBoV |
SpeechLevelMicIn<253> |
xs:int |
Yes |
The speech level into the microphone at a given endpoint. |
dBoV |
SpeechLevelPostProcess<254> |
xs:int |
Yes |
Overall average speech level sent from an endpoint after all processing. |
dBoV |
SignalLevelLoudSpeaker<255> |
xs:int |
Yes |
Input level to the loudspeaker or headphone input. |
dBoV |
BackGroundNoiseMicIn<256> |
xs:int |
Yes |
Background noise input to the microphone. |
dBoV |
BackGroundNoiseSent<257> |
xs:int |
Yes |
Background noise left over after all processing. |
dBoV |
LocalSpeechToEcho<258> |
xs:int |
Yes |
If less than 10 decibels, speech level is too low compared to echo level, and distorted speech might occur. |
dB |
SpeakerGlitchRate<259> |
xs:int |
Yes |
Average glitches per 5 minutes for the loudspeaker rendering. |
Glitch count |
MicGlitchRate<260> |
xs:int |
Yes |
Average glitches per 5 minutes for the microphone capture. |
Glitch count |
SpeakerClipRate<261> |
xs:int |
Yes |
Average clips per 5 minutes during the call for the loudspeaker rendering. |
Glitch count |
MicClipRate<262> |
xs:int |
Yes |
Average clips per 5 minutes during the call for the microphone capture. |
Glitch count |
RxAGCSignalLevel<263> |
xs:int |
Yes |
Signal level received at the automatic gain control for the inbound audio stream (2). |
dBoV |
RxAGCNoiseLevel<264> |
xs:int |
Yes |
Noise level received at the automatic gain control for the inbound audio stream (2). |
dBoV |
v2:InitialSignalLevelRMS<265> |
xs:float |
Yes |
The root-mean-square of the received signal for the first 30 seconds of the call. |
sample level |
v2:AudioTimestampDriftRateMic<266> |
xs:float |
Yes |
Microphone or capture device clock drift rate. |
percent |
v2:AudioTimestampDriftRateSpk<267> |
xs:float |
Yes |
Speaker or render device clock drift rate. |
percent |
v2:AudioTimestampErrorMicMs<268> |
xs:float |
Yes |
Noise in timestamp information from microphone or capture device. |
milliseconds |
v2:AudioTimestampErrorSpkMs<269> |
xs:float |
Yes |
Noise in timestamp information from speaker or render device. |
milliseconds |
v2:VsEntryCauses<270> |
xs:unsignedByte |
Yes |
The bit flag indicating the reason(s) the AEC entered half-duplex mode:
|
unsigned byte |
v2:EchoEventCauses<271> |
xs:unsignedByte |
Yes |
The bit flag indicating the reasons the DeviceEchoEvent was detected:
|
flag |
v2:EchoPercentMicIn<272> |
xs:float |
Yes |
Percentage of time when echo is detected in the audio from the capture or microphone device prior to echo cancellation. |
Percentage |
v2:EchoPercentSend<273> |
xs:float |
Yes |
Percentage of time when echo is detected in the audio from the capture or microphone device after echo cancellation. |
Percentage |
v2:RxAvgAGCGain<274> |
xs:float |
Yes |
The gain level applied to the received signal. |
dB |
v2:Separator<275> |
default |
Yes |
Separator element used for future schema extensions. |
Not applicable |
v3: RecvSignalLevelCh1<276>
|
xs:int |
Yes |
Average energy level of received for audio classified as mono speech, or left channel of stereo speech. |
dB |
v3: RecvSignalLevelCh2<277>
|
xs:int |
Yes |
Average energy level of received for audio classified as right channel of stereo speech. |
dB |
v3: RecvNoiseLevelCh1<278>
|
xs:int |
Yes |
Average energy level of received for audio classified as noise, mono signal or the left channel of stereo signal. |
dB |
v3: RecvNoiseLevelCh2<279>
|
xs:int |
Yes |
Average energy level of received for audio classified as noise, the right channel of stereo signal. |
dB |
v3: SendSignalLevelCh1<280>
|
xs:int |
Yes |
Average energy level of sent for audio classified as mono speech, or left channel of stereo speech. |
dB |
v3: SendSignalLevelCh2<281>
|
xs:int |
Yes |
Average energy level of sent for audio classified as right channel of stereo speech. |
dB |
v3: RecvNoiseLevelCh1<282>
|
xs:int |
Yes |
Average energy level of sent for audio classified as noise, mono signal or the left channel of stereo signal. |
dB |
v3: RecvNoiseLevelCh2<283>
|
xs:int |
Yes |
Average energy level of sent for audio classified as noise, the right channel of stereo signal. |
dB |
v3:Separator3<284> |
default |
Yes |
Separator element used for future schema extensions. |
Not applicable |
v4:RenderSignalLevel<285> |
xs:float |
Yes |
Average render speech level after dynamic range compression or analog gain control is applied. |
dBo |
v4:RenderNoiseLevel<286> |
xs:float |
Yes |
Average render noise level after dynamic range compression or analog gain control is applied. |
dBo |
v4:RenderLoopbackSignalLevel<287> |
xs:float |
Yes |
Average level of speaker loopback signal (after any device offload effects have been applied). |
dBo |
v4:Separator4<288> |
default |
Yes |
Separator used for future schema extensions. |
Not applicable |