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Audio Settings (Devices)

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Revision as of 09:45, 24 October 2023 by Asle (talk | contribs)
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This article describes the audio settings for devices running firmware version 7.1 or later. 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.

Note icon Available settings are dependent on device type and wether or not accessories are selected.



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
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