Sound Control - ADDER AdderLink Digital iPEPS User Manual

Sound control

This option provides a range of options related to the audio capabilities of the
Digital iPEPS.
Sample rate
The number of
audio samples per
second (in Hz).
8000 produces less
samples and hence
uses less network
bandwidth. 48000
(48KHz) produces
the best sound
reproduction.
Channels
Allows you to
choose between
Mono and Stereo.
Window size (ms) Restart Sound Threshold
Click to re-
The time frame The level above
in which the enable audio which the audio level
unit requires an transmission should be before it is
acknowledgement following an considered to be not
from the remote automatic background noise
viewer when cutout. If cutouts and hence should
data is sent. If occur regularly, be transmitted. A
acknowledgements try reducing level of 25 means the
are not received, the sample rate audio input needs to
the unit will stop or format, or be above 25% of the
sending audio data increasing the maximum before it is
- Click the Restart Window size transmitted.
Sound button. setting.
Settings can be adjusted to suit transmission characteristics and audio quality
requirements (unsuitable audio settings can affect video quality):
For use on slow links: For maximum audio quality:
Format: uLaw Format:
Sample rate: 8000 Sample rate:
Channels: Mono
Channels:
Where necessary, adjust the Window size, Threshold and Min burst settings until
optimum audio output is obtained.
Format
uLaw - Use when
transmitted data needs
to be minimised - 8-bit
compressed data.
Linear - Use when
high quality audio
performance is required
- 16-bit uncompressed
(raw) data is
transmitted.
Halt timeout Min burst (ms)
Determines The time period
how long to for which the
wait once the audio input must
audio input fall below the
has stopped threshold level
before timing before audio
out the audio transmission
connection. ceases.
There are four Transmission
options: Off, will begin again
Short, Medium as soon as the
and Long. threshold level
is once again
exceeded.
Linear
48000
Stereo
20