Audio Programming Interface; Advanced Mode Commands - Motorola 8900 - Blackberry Curve Cell Phone OEM Car Charger Developer's Manual

Unlike basic audio mode, which provides predefined audio paths, the advanced audio mode
provides full control over the C24 audio interface and its parameters, and differentiates between
each type of audio sound.
Table 2-11
part of the complete advanced audio AT command set.

Audio Programming Interface

The C24 incorporates a unique audio programming interface, through AT commands, which
controls the following audio features:
Audio Path - Defines the input and output devices for speech, DTMF tones, rings and alerts.
•
Audio Gain - Defines the amplification (gain) level for input and output audio devices.
•
Audio Algorithm - Defines the speech processing features for voice calls.
•
December 15, 2008
describes the advanced mode audio programming features. These features are only a
Table 2-11: Advanced Mode Commands
Command
AT+MAPATH
AT+MAFEAT
AT+MAVOL
AT+MMICG
AT+MADIGITAL
C24 Module Hardware Description
Chapter 2: Hardware Interface Description
Description
Sets the input device for voice, and the output
devices for voice, DTMF tones, rings and
alerts.
Enables and disables the speech processing
algorithms - Echo suppression, noise sup-
pression and sidetone.
Sets the gain (amplification) level of the
selected analog output device.
Sets the gain (amplification) level of the
selected analog input device.
Switches between analog and digital audio
paths.
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