Enabler-G AT Command Set - SE Spezial-Electronic AG

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AT Command Set Reference Version 1.08 3.2.3 Advanced Audio Commands 3.2.3.1. $DFIR Configure Downlink FIR Coefficients Command Function This command allows the user to set the downlink FIR filter coefficients to improve voice quality. Command Functional Enfora Specific Group Command Format Query AT$DFIR=? Response $DFIR: 0-ffff,0-ffff, ... 0-ffff (32 entries) OK Write Format AT$DFIR =,, … Response , OK Read Format AT$DFIR? Response $DFIR: , , … (12) , , … (12) , , … (8) Execution Format N/A Response N/A Parameter Values < coeff1 > 0-ffff=> 2.14 fixed point number. < coeff2 > 0-ffff=> 2.14 fixed point number. … < coeff31 > 0-ffff=> 2.14 fixed point number. < coeff32 > 0-ffff=> 2.14 fixed point number. Reference N/A Standard Scope Optional Enfora Implementation Scope Full GSM0107PB001MAN Page 209 of 370 1.08 – 25 January 2007
AT Command Set Reference Version 1.08 3.2.3.1. $DFIR Configure Downlink FIR Coefficients (continued) Notes Only 31 coefficients are required for the hw but programs being used to generate the coefficients output 32. The less modifications needed to the output the better. Examples These coefficients are 2.14 fixed point values input in hexadecimal. AT$DFIR =4000,0,0,…,0,0 4000 followed by all zeros is unity (pass through mode). GSM0107PB001MAN Page 210 of 370 1.08 – 25 January 2007
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Enabler-G AT Command Set - SE Spezial-Electronic AG

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