Howto:Adjusting volume parameters on IP111 and IP112: Difference between revisions

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Presently 21 is the default. Decreasing the value by 4 decreases the sensitivity by 6 dB. The allowed range of the ADC_Gain parameter is 0..31. The same command can be applied for speakerphone mode with name SPEAKER instead of HANDSET.
Presently 21 is the default. Decreasing the value by 4 decreases the sensitivity by 6 dB. The allowed range of the ADC_Gain parameter is 0..31. The same command can be applied for speakerphone mode with name SPEAKER instead of HANDSET.


Higher speaker volume can be achieved by a command


It's possible to turn down or turn up the volume individual within the phone configuration. The values are ''offsets'', which means that 0 is not off, it's the default value of the firmware.
   <nowiki>http://ip-adress-of-the-phone/!config add AC-DSP0 HANDSET /Coder_Output_Gain 34,32,30,28,26,24,22,20,18,16</nowiki>
 
The headset volume can be adjusted with <nowiki>http://addr/dsp.xml</nowiki> -> Volume
 
The other levels can be adjusted on the command line, the level is specified in db.
config add AC-DSP0 HANDSET /mic-volume
config add AC-DSP0 HANDSET /spk-volume
config add AC-DSP0 SPEAKER /mic-volume
config add AC-DSP0 SPEAKER /spk-volume
config add AC-DSP0 HEADSET /mic-volume
config add AC-DSP0 HEADSET /spk-volume
The default is restored by a corresponding
config rem AC-DSP0 ...
command.
 
You can set the speaker volume /spk-volume and the microphone volume /mic-volume. Normally the headsets microphone volume must not be changed, because the user adapts the loudness of his own voice from situation to situation. The common problem is the speaker volume.
 
Example to turn up the speaker volume a bit:
 
   <nowiki>http://ip-adress-of-the-phone/!config add AC-DSP0 HEADSET /spk-volume 2</nowiki>
   <nowiki>http://ip-adress-of-the-phone/!config activate</nowiki>
   <nowiki>http://ip-adress-of-the-phone/!config activate</nowiki>


Example to turn up the speaker volume a bit more:
where each value of the comma separated list (default shown) corresponds to one of the volume steps. Decreasing each by 4 increases the volume by 6 dB. The permitted range of the values is 0..63. The same command can be applied for speakerphone mode with name SPEAKER instead of HANDSET.
  <nowiki>http://ip-adress-of-the-phone/!config add AC-DSP0 HEADSET /spk-volume 4</nowiki>
  <nowiki>http://ip-adress-of-the-phone/!config activate</nowiki>


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The values are between -32 and +32, out of range values will be converted to the higher limit.
Clipping may occur for high audio levels from the peer if the speaker volume has been increased.
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If you are satisfied with the settings, type:
Example to turn down the speaker volume a bit:
 
  <nowiki>http://ip-adress-of-the-phone/!config add AC-DSP0 HEADSET /spk-volume -2</nowiki>
  <nowiki>http://ip-adress-of-the-phone/!config activate</nowiki>
 
Example to restore default behaviour:
 
  <nowiki>http://ip-adress-of-the-phone/!config rem AC-DSP0 HEADSET /spk-volume </nowiki>
  <nowiki>http://ip-adress-of-the-phone/!config activate</nowiki>
 
If you satisfied with the settings, type:
   <nowiki>http://ip-adress-of-the-phone/!config write</nowiki>
   <nowiki>http://ip-adress-of-the-phone/!config write</nowiki>


Now, the values are in the config.
Now, the values are in the config.


Please also note, that it's possible for future DSP code updates, that the default value can be changed (what means that "0" can be louder or quieter) and it's possible that updates of the headset manufacturer can change the volume, too.
Please note, that the default values might change without notice in future DSP code updates and also the actual sound pressure corresponsing to these values might change. Please re-evaluate tweaks after firmware update and assert the commands above again.
So after doing a firmware update on the phone or on the headset, it's necessary to do the steps above again.


==Related Articles==
==Related Articles==

Revision as of 12:06, 9 April 2015

Applies To

  • IP111 with V11r1 and above

Problem

  • Customer may need control over the microphone sensitivity to lower background noise pickup
  • Customer may need higher speaker volume of handset, loudspeaker than configurable on the phone

Summary

The microphone sensitivity of the handset can be controlled with a sequence of commands along the lines 

  http://ip-adress-of-the-phone/!config add AC-DSP0 HANDSET /ADC_Gain 21
  http://ip-adress-of-the-phone/!config activate

Presently 21 is the default. Decreasing the value by 4 decreases the sensitivity by 6 dB. The allowed range of the ADC_Gain parameter is 0..31. The same command can be applied for speakerphone mode with name SPEAKER instead of HANDSET.

Higher speaker volume can be achieved by a command 

  http://ip-adress-of-the-phone/!config add AC-DSP0 HANDSET /Coder_Output_Gain 34,32,30,28,26,24,22,20,18,16
  http://ip-adress-of-the-phone/!config activate

where each value of the comma separated list (default shown) corresponds to one of the volume steps. Decreasing each by 4 increases the volume by 6 dB. The permitted range of the values is 0..63. The same command can be applied for speakerphone mode with name SPEAKER instead of HANDSET.

To avoid hearing damage, please be careful with the values! Increase the values step by step. You hear the difference after the !config activate

Clipping may occur for high audio levels from the peer if the speaker volume has been increased.

If you are satisfied with the settings, type: 

  http://ip-adress-of-the-phone/!config write

Now, the values are in the config.

Please note, that the default values might change without notice in future DSP code updates and also the actual sound pressure corresponsing to these values might change. Please re-evaluate tweaks after firmware update and assert the commands above again.

Related Articles

Howto:Adjust Speaker volume on IP241 IP222 IP232

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