Audio Algorithms; Audio Programming Interface; Speech Processing Features - Motorola 8900 - Blackberry Curve Cell Phone OEM Car Charger Developer's Manual

Audio Interface
Figure 2-22
commands.
Figure 2-22: Audio Programming Interface

Audio Algorithms

The C24 audio interface features advanced speech processing algorithms for echo suppression,
noise suppression and side-tone feedback
Enabling or disabling the algorithms can be configured separately for each audio path and
operating mode through the AT command interface.
The C24 also supports EVRC, EVRC-B and 13K speech coding algorithms, which are used by
the CDMA network. These algorithms are configured and operated by the CDMA network
provider.
Table 2-12
Feature
Echo Suppression
Noise Suppression
Sidetone
34
describes the audio programming interface options, which are defined by AT
gives the speech processing features.
Table 2-12: Speech Processing Features
AT Command
Basic Advanced
ATS96 AT+MAFEAT
ATS94 AT+MAFEAT
C24 Module Hardware Description
Default
Setting Description
Controls the echo and noise suppres-
Disabled sion.
Enabled Controls the sidetone.
December 15, 2008