Technical information

Chapter 1: Product Features
August 5, 2008 AT Commands Reference Manual 1-15
Echo Suppression
Echo suppression suppresses a large amount of the output sound picked up by the input device
(cancels all echoes).
Figure 1-5: Echo Suppression
Noise Suppress
Noise suppression improves audio quality in all modes by suppressing environment noise from
being picked up by the input device.
Technical Description
The path features provide full control over the navigation of the audio in the product.
The gain features provide full control over the volume levels of the different output accessories
and tones.
The algorithm provides full control over activation/deactivation of audio quality features such as
echo canceling and noise suppression.
The user can access these features by means of AT commands. These are described later in this
document.
Mic
Spkr
Echo
G24
Remote
1
5
Mic
Out In
Out line is filtered
by In line
Spkr
3
4
2
Problem
Loop
1
2 3 4 5
Solution
(
(
4
3 1
Suppression