Motorola Mobility LLC P56JE1 Manual Do Utilizador

C24 Hardware Interface Manual 

Version 0.3 

 
 

TABLE 14 – Advanced mode commands 

 

Command 

Description 

Sets the input device for voice, and the output 

AT+MAPATH 

 

devices for voice, DTMF tones, rings and 
alerts. 

Enables and disables the speech processing 

AT+MAFEAT 

 

algorithms – Echo suppression, noise 
suppression and sidetone. 

Sets the gain (amplification) level of the 

AT+MAVOL 

 

selected analog output device. 

Sets the gain (amplification) level of the 

AT+MMICG 

 

selected analog input device. 

Switches between analog and digital audio 

AT+MADIGITAL 

 

paths. 

 
 

 
The module incorporates an audio programming interface, through AT commands, which controls the 
following audio features: 
 

ƒ

  Audio Path – Defines the input and output devices for speech, DTMF tones, rings and alerts. 

ƒ

  Audio Gain – Defines the amplification (gain) level for input and output audio devices. 

ƒ

  Audio Algorithm – Defines the speech processing features for voice calls. 

 
 

 
The module’s audio interface support 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 module supports the following speech coding algorithms:  

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Page 27 of 36 

Applicant: Motorola, INC

FCC ID: IHDP56JE1