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Outbbcgain, Outcalibrate, Sidetone – Siemens Brodersen MC55 AT User Manual

Page 415: Outcali, Brate, At^snfo, Outstep

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MC55_ATC_V04.00

Page 415 of 475

3/17/06

Confidential / Released

17.13

AT^SNFO Set audio output (= loudspeaker path) parameter

AT^SNFO

controls the earpiece path amplification. The read and write commands refer to the active audio mode.

The write command works only in audio modes 2 to 6.

Syntax

Parameter Description

Negative DAC gain (attenuation) adjustable in four 6 dB steps from 0 dB to -18 dB (0=0 dB, 3=-18 dB)
0...3

Formula to calculate the value of the 5 volume steps selectable with parameter

:

Attenuation = 20 * log (2 * outCalibrate[n] / 32768)
0...32767

Volume steps 0 - 4, each defined with outCalibrate[n]
0...[4]

Multiplication factor for the sidetone gain.

Formula to calculate how much of the original microphone signal is added to the earpiece signal:

Sidetone gain in dB = 20 * log (sideTone / 32768).
0...32767

Test Command

AT^SNFO=?

Response(s)

^SNFO:

(list of supported

s), (list of supported

s), (list of supported

s), (list of supported

s)

OK

Read Command

AT^SNFO?

Response(s)

^SNFO:

,

[0] ,

[1] ,

[2] ,

[3] ,

[4] ,

,

OK

Write Command

AT^SNFO=

,

[0] ,

[1] ,

[2] ,

[3] ,

[4] ,

,

Response(s)

OK

Reference(s)

PIN

ASC0 ASC1

MUX1

MUX2

MUX3 Charge

Last

SIEMENS

!

%

%

%

%

%

!

!

!

(num)(^SNFW)

(num)(^SNFW)

(num)

(num)(^SNFW)