Blackmagic Design Web Presenter 4K - Manual (Page 13)

Audio Input
The audio waveform display at the top of the audio input panel shows the audio
information for the past 6 seconds of your live stream. This is continually updated and
scrolls from right to left.
Below the audio waveform display you can view detailed technical information about
the audio input.
Sample Frequency Displays the sample frequency rate of the audio embedded
in the SDI input.
Emphasis Indicates if your audio source has its emphasis option enabled.
Audio Source Lock Indicates whether the audio source frequency is locked to an
external reference source.
Word Length Shows the bit depth of the audio embedded in the SDI input.
Origin These four characters indicate the channel origin.
Time of Day Free run timecode.
Audio Bits Shows the bit activity in the audio samples embedded in the
SDI connection. Even if the audio channel status says you have
16, 20 or 24 bit audio, the audio bit activity will confirm it.
VUCP Reading VUCP bits from left to right: the ‘V’ bit indicates ‘valid’,
‘U’ is the ‘user’ bit, ‘C’ is the ‘channel status’ bit, and ‘P’ is for
‘parity’. This field is like ‘audio bits’.
Sample Address Audio sample counter.
AUX Bits Use Indicates whether AUX bits are used for main audio.
Audio Channels 1-32 Each digit represents an embedded audio channel on the SDI input.
A ‘P’ shows that an audio channel is in use and a ‘-’ means that
there is no audio on that channel.
13 Using the Monitor Output