HDMI Reference Sink
20.
Audio Tab
Audio tab has a preview of the audio signal format and the controls for audio playback and
recording.
The audio signal format is shown in three ways
•
The ‘oscilloscope’ panel displays the waveforms of the received audio channels.
•
The frequency spectrum of the audio is shown in the lower panel. The range of the
spectrum display is from 0 to 1/2 of the input sampling rate. The amplitude scale of
the spectrum display can be selected between ‘Linear’ to 80 dB.
•
The horizontal sound level indicator is in the bottom of the dialog.
The span of the preview window is defined with
Audio preview size
found in Tools >
Options dialog. The value is given in ksamples (1024 samples). The relation between the
preview window span in milliseconds (msec) and the value given in
Audio preview
size
depends on the sampling frequency. Please do not exceed the
Audio buffer size
set in the
same dialog.
Disable / Enable Preview
This button controls capturing the audio data.
