The following compression values are supported:
Compression
Stereo Audio
AC-3 Audio
no compression
24 bit native data (2975 kbps)
24 bit native data (2975 kbps)
pack 24 bits
24 bit data, full sample rate
(2250 kbps)
16 bit data, zeros run length
encoded (430 kbps)
pack 20 bits
20 bit data, full sample rate
(1880 kbps)
16 bit data, zeros run length
encoded (430 kbps)
pack 20 bits
20 bit data, full sample rate
(1880 kbps)
16 bit data, zeros run length
encoded (430 kbps)
pack 16 bits
16 bit data, full sample rate
(1517 kbps)
16 bit data, zeros run length
encoded (430 kbps)
decimate 2
16 bit data, 1/2 sample rate
(784 kbps)
16 bit data, zeros run length
encoded (430 kbps)
decimate 4
16 bit data, 1/4 sample rate
(418 kbps)
16 bit data, zeros run length
encoded (430 kbps)
The native uncompressed setting passes a full 24 bit payload plus 4 s/pdif control bits
updating on a continuous frame basis. Other modes only transmit the specified number
of bits and reduce the s/pdif control bits update rate to once per second.
Figure 38.
Audio Adjustment Panel
Audio Input Selection
•
Audio
Input
Enable
selection — only one audio source can be enabled at a time.
Select either the
HDMI
or
Analog
check box.
•
Analog
Input
Level
(program audio) — is configured to achieve an undistorted signal
with the optimum signal to noise ratio.
Set the
Analog
Input
Level
to a value just larger than the maximum value (peak) that
is input. The analog input measurement shows the current measured input level and
can be used as a reference to help determine the peak input level.
NOTE:
This is a peak level adjustment that should be carried out when the input
signal is at a maximum level. The program audio stream should be connected
to a suitable decoder. If the audio is not being streamed, then the analog input
measurement shows
disabled
.
If the analog input measurement shows over-range, the analog input level setting must
be increased until the over-range condition clears. If the measurement is more than
2 dB below the set input value, the input value should be reduced to be 1 dB greater.
NOTE:
There is no input level control for digital audio. The output level can be
adjusted on the decoder.
VNM 250 • VNM 250 GUI Overview
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Содержание VN-Matrix 250 Series
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