The Audio Level Is Low; There Is A Lot Of Noise; There Is Clipping Noise - Sennheiser MobileConnect User Documentation

The audio level is low

Check the amplitude of the audio signal in the Input Levels tab on the
▷
Audio Inputs page of the Admin Interface. See "Audio Inputs" in section
"General configuration".
▷ Make sure the amplitude is high enough. If it is always lower the -20 dB,
increase the sensitivity of the analog audio input from +4 dBu to -10
dBu.
▷ Enable the AGC. If the audio level remains low, increase the parameter
ratio from 2:1 to 3:1 or higher. Alternatively, reduce the threshold from
-40 dB to -60 dB or -80 dB to provide extra gain on the low-volume por-
tions of the input.

There is a lot of noise

▷ In case you are streaming from a microphone or other noisy source:
Adjust the noise threshold and noise gain in the AGC tab on the Audio
Inputs page of the Admin Interface. See "Audio Inputs" in section "Ge-
neral configuration".
Increasing the noise threshold, e.g. from -80 dB to -60 dB, will cause
the noise gate to trigger faster. This results in less noise streaming, ho-
wever, risking to reduce the non-noise portions of the audio.
Decreasing the noise gain, e.g. from -10 dB to -20 dB, will increase the
attenuation of the noise.

There is clipping noise

▷ Check the amplitude of the audio signal in the Input Levels tab on the
Audio Inputs page of the Admin Interface. See "Audio Inputs" in section
"General configuration". If the audio level is too high, reduce the analog
input sensitivity to +4 dBu.
Troubleshooting
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