Audio Settings (Devices)

This article describes the audio settings in SIP mode for device version 7.1. For description of older versions see Audio Settings (SIP) - older versions

Main Audio Settings

Audio settings are used to set various speaker and microphone related options, tone volume, automatic volume control, noise reduction, line in/out settings, ringing tones, and other. Select SIP Configuration > Audio Settings to access the page for configuring Audio parameters.

Some settings are dependant on device type and some are shown only when certain accessories are selected

The menus and parameters displayed may vary depending on the device type (e.g. Compact, Industrial or Ex).

Normal Mode

Normal mode is the default view in the device web. This gives access to some basic settings. For more advanced functionality, advanced mode must be enabled (see next section)

Normal mode

Item	Description	Range	Default	Accessory
Internal Loudspeaker	Set speaker volume level	-10 - +18 (dB)	0
Line Out	Set Line Out gain level	-20 - +20 (dB)	0
Handset Loudspeaker	Set Handset loudspeaker gain level	-15 - +6 (dB)	0	Handset
Headset Loudspeaker	Set Headset loudspeaker gain level	-15 - +6 (dB)	0	Headset
AGC (Automatic Gain Control)	If speech level and environmental noise are very unstable it may be turned on		Disabled
ANC (Automatic Noise Cancellation)	Feature to remove background noise from the microphone signal		Enabled
AVC (Automatic Volume Control)	Check this box to automatically adjust the volume according to the background noise level		Disabled

Advanced Mode

When selecting Advanced Mode the Audio Settings menu change, and is divided into three main sections as shown in the image below:

Advanced mode

By clicking on the yellow FACTORY RESET AUDIO SETTINGS all audio settings are reverted to factory default. This includes DAVC, VAD (Sound Detection) and Tone Test settings

Click on the wanted bar to expand the menu and view the options.

Audio Outputs

• Audio Outputs[Show/hide]

• 

  Audio Outputs

  
  

  Item	Sub Item	Description	Range	Default	Accessory/Device
  Internal Loudspeaker
  Gain		Set speaker volume	-10 - +18 (dB)	0
  Override Gain		Sets the speaker volume during volume override	-10 - +28 (dB)	18
  Source
  	Main Audio Line Pure Line In Signal Pure Line In +GPIO	Play audio from VoIP signal Device in idle: Play audio from the Line IN input. Device in a call, play audio from the VoIP signal Device in idle: Play audio from the Line IN input IF input 6 is active. Device in a call, play audio from the VoIP signal		Default	Turbine Turbine+
  Option
  	Standard Loudspeaker Not Connected	Standard Loudspeaker connected No loudspeaker connected		Default	IP Flush Master V2 IP-CROR TFIX v2
  External Loudspeaker					IP Flush Master V2 IP-CROR TFIX v2
  Gain		Set speaker volume	-21 - +11 (dB)	0
  Override Gain		Sets the speaker volume during volume override	-21 - +12 (dB)	11
  Option
  	Standard Loudspeaker Not Connected	Standard Loudspeaker connected No loudspeaker connected		Default
  Line Out
  Gain		Set Line Out gain level	-20 - +20 (dB)	0
  Override Gain		Set Line Out gain level during volume override	-20 - +21 (dB)	0
  Source
  	Main Audio Line Pure Mic Signal Processed Mic Signal	Play audio from VoIP signal Audio from microphone without any signal processing Audio from microphone with signal processing		Default	Only available when no accessory chosen
  Handset Loudspeaker					All Handset modes IP Flush Master v2 IP-CROR
  Gain		Set Handset loudspeaker gain level	-15 - +6 (dB)	0
  Override Gain		Set Handset loudspeaker gain level during volume override	-15 - +9 (dB)	0
  Headset Loudspeaker					All Headset modes IP Flush Master v2 IP-CROR
  Gain		Set Headset loudspeaker gain level	-15 - +6 (dB)	0
  Override Gain		Set Headset loudspeaker gain level during volume override	-15 - +9 (dB)	0
  Force Loudspeaker Ringing		Enable the ringing signal from an incoming call to be heard in the loudspeaker if headphones, handset or external loudspeaker is connected.		Disabled	Handset or Headset IP Flush Master V2 IP-CROR

Audio Inputs

• Audio Inputs[Show/hide]

• 

  Audio Inputs

  
  

  Item	Sub Item	Description	Range	Default	Accessory
  Internal Microphone		Adjust the microphone gain level	-10 - +10 (dB)	0	No accessory Handset w/offhook Handheld microphone Headset w/autodetect
  Line In
  Gain		Adjust the Line In gain level	-10 - +20 (dB)	0	No accessory
  Activate
  	Not Connected Line In 1 vrms	Line In not in use Line In is active input		Default
  Handset Microphone		Adjust the handset microphone gain level	-10 - +10 (dB)	0	All Handset modes
  Headset Microphone
  Gain		Adjust the headset microphone gain level	-10 - +20 (dB)	0	All Headset modes
  Activate
  	Electret Mic Dynamic Mic	Electret type microphone in headset Dynamic type microphone in headset		Default

Audio Signal Processing

• Audio Signal Processing [Show/hide]

• 

  Audio Signal Processing

  
  

  Item	Sub Item	Description	Range	Default	Relevant device(s)
  AGC (Automatic Gain Control)					Turbine
  Enable AGC		To be used with caution and in special conditions where Near-End talker may be operating in varying distances deviating from the nominal talker distance to the station		Disabled
  AGC mode
  	Digital SW AGC Analogue HW AGC (quiet profile) Analogue HW AGC (noisy profile)	For majority of use cases Analogue HW AGC is used only for analogue microphone, and basically for "Push to Talk"/"Talk back" applications and not in Open Duplex modes.		Default
  AGC gain profile Only for AGC mode Digital SW AGC
  	Standard Moderate High Very High	The target signal gain level. "Standard" shall aim to keep a "nominal voice signal level at approx -23 dBFS. The other options will target increasingly higher signal levels. Use with caution.		Default
  AGC speed Only for AGC mode Digital SW AGC
  	Slow Fast	Attack and decay rates of the algorithm		Default
  AEC (Acoustic Echo Cancellation)					All
  Enable AEC		Tuning of the AEC algorithm in levels		Enabled
  AEC mode
  	Low Moderate High Half Duplex	See separate article {link here}		Default
  ANC (Automatic Noise Cancellation)					All
  Enable ANC		Tuning of the ANC algorithm in levels		Enabled
  ANC mode
  	Low Moderate High Very High	For most scenarios the "Low" works best. Higher levels will reduce noise levels more, but also may produce significant impact on the Near-End talker signal quality.		Default
  FESS (Far-End Signal Squelch)					All
  Enable FESS		Squelch algorithm silencing the signal level below threshold. Main use case is external interface input like signal from a Radio Systems where there is fixed noise level on signal when no voice activity.		Disabled
  FESS Threshold		Silence signal if RMS energy of a 100ms sampled frame is less then this level	-92 - 0 (dBFS)	-60
  FESS Activation Delay		If signal is silenced use this delay before opening up again (to avoid fast squelch on/off)	0 - 1000 (ms)	100
  Loudspeaker DRC (Dynamic Range Compression)					All
  Enable DRC		Noise Gate with Gain option		Disabled
  DRC Gain		Signal gain to apply on "nominal voice audio levels"	-0 - 20 (dBA)	0
  AVC (Automatic Volume Control					All
  Enable AVC		Volume is adjusted according to the ambient noise level		Disabled
  AVC Advanced Settings		Enable to show advanced options		Disabled
  Advanced AVC Enabled:
  Lower Threshold		Threshold level for AVC start working	30 - 80 (dBA)	65
  Upper Threshold		Threshold level for AVC stop working	80 - 120 (dBA)	100
  Attack Rate		How fast gain is raised when ambient noise level is increasing	1 - 100 (dBA/sec)	10
  Decay Rate		How fast gain is reduced when ambient noise level is falling	1 - 100 (dBA/sec)	10
  Hysteresis		Required mic-signal change level before new gain adjusted. This is applied when change in gain directions	1 - 10 (dBA/sec)	3
  Far-End Lockout Time		Time for successive frames after AVC lock, due to far-end active or optional high near-end signal, before commencing AVC adjustments. A negative sign locks AVC if signal above upper threshold	1 - 100 (100ms)	10

New default settings

IP Intercom

The IP-station audio output has been normalized based on ITU recommendations. The input signal which is used for the output measurements is an ITU Voice Signal with an average RMS energy of -23 dBFS. Output levels are measured at a distance of 0.5 meter. The actual SPL of the IP-CROR station is 3 dB lower than indicated in the table below due to the covering of the speaker grill with a foil.
Kit output levels are based on the same speaker arrangement as for the comparable station.

Product family	Gain range
	Minimum	Default	Maximum	Override maximum
TCIS/TICV/TCIV+/TKIV+/TKIS	-10	0	+13	+23
TFIE/TKIE	-10	0	+18	+28
TMIS/TMIV+	-17	0	+4	+14
ECPIR	-17	0	+4	+14
TFIX	-10	0	+3	+4
TFIX-V2	-10	0	+3	+4
IP Desk Master (100840xxxx)	-8	0	+16	+18
IP Flush Master (1008431000)	-14	0	+10	+12
IP-Station, Clean Room/OR (1008415000)	-14	0	+10	+12

IP Speakers

The IP Speaker audio output has been normalized based on ITU recommendations. The input signal which is used for the output measurements is an ITU Voice Signal with an average RMS energy of -23 dBFS. Output levels are measured at a distance of 1.0 meter

Product family	Gain range
	Minimum	Default	Maximum	Override maximum
ELSII-10WM	-10	10	+16	+17
ELSIR-10CM	-10	10	+16	+17
ELSII-10HM	0	10	+29	+30
ELSII-10LHM	0	10	+35	+36
ELSII-10PM	-10	10	+13	+14