Digigram Software for IQOYA SERV/LINK 88 (Upgrades from 8 Codecs to 16) - Manual (Page 83)

IQOYA SERV/LINK user manual
83
Source Type = IP service, and IP service is UDP
In UDP mode, the audio format has to be declared.
Source Type = IP service, and IP is a WEB radio
- Mean of left + right channels : compares the mean value of a left and right sample to
the threshold. In case the calculated values are always lower to the silence threshold
during the defined silence duration, silence condition is reached.
- Left channel only : compares the left channel samples to the silence threshold. In
case the sample values are always lower to the silence threshold during the defined
silence duration, silence condition is reached.
- Right channel only : compares the right channel samples to the silence threshold. In
case the sample values are always lower to the silence threshold during the defined
silence duration, silence condition is reached.
- Left and right channels : compares both the left and right channel samples to the
silence threshold. In case the sample values on both channels are always lower to the
silence threshold during the defined silence duration, silence condition is reached.
- At least one channel: compares both the left and right channel samples to the silence
threshold. In case the sample values on at least one of the two channels are always
lower to the silence threshold during the defined silence duration, silence condition is
reached.
Silence threshold &
Silence duration
Read/Write Silent audio is defined through these two parameters, expressed in dBfs.
When audio level is below the threshold value during at least the defined duration, the
alarm “Analog audio in silent” or “Digital audio in silent” is set (if it is enabled from the
“Alarms setup” menu).
Signal threshold
Signal duration
Signal drop duration
Read/Write Audio signal is defined through the three parameters. Audio signal is considered as
recovered if all the following conditions are true:
● Audio level exceeds the Signal threshold (dBfs) within the “Signal duration”
analysis window (ms).
● Audio level does not stay below the Signal threshold during the “Signal drop
duration”, within the “Signal duration” analysis window.
Note the following rule: Signal drop duration <= (Signal duration / 2).
Once signal is recovered, the alarm “Analog audio in silent” or “Digital audio in silent” is
reset (if it is enabled from the “Alarms setup” menu).