Siemens MC55 Manuel d'utilisateur télécharger pdf (Page 404)

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101

MC55 AT Command Set

16.9 AT^SNFA

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MC55_ATC_V01.05 Page 404 of 469 2/10/04

Confidential / Released

Parameter Description

Multiplication factor for input samples. Parameter <atten> is identical with <inCalibrate> of AT^SNFI.

Formula used to calculate microphone attenuation (negative gain):

Gain in dB = 20 * log(

<atten>/32768)

0...32767

(P)

...65535

0 Microphone is muted

32767 No attenuation on the microphone path

Notes

• The command is provided for compatibility with M20 and is a subset of AT^SNFI. The parameter <inCali-

brate>

of AT^SNFI is identical with <atten> of AT^SNFA.

• To make the changes persistent use

AT^SNFW.

Example

<atten>

(num)(^SNFW)

^SYSSTART

at^snfa=?

^SNFA: (0-65535)

at^snfa?

^SNFA: 32767

at^snfs=4

at^snfa=1

at^snfa?

^SNFA: 1

at^snfi?

^SNFI: 5,1

at^snfi=5,45

at^snfa?

^SNFA: 45

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Siemens MC55 Manuel d'utilisateur Page 404

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