Configure General Audio Settings

You can specify general audio settings for your system.

If you are in a call with a far site that is sending audio in stereo mode, you can receive in stereo. In calls where some sites can send and receive stereo but some can’t, any site set up to send or receive stereo can do so.
Note: Some audio settings are unavailable when you connect a SoundStructure digital mixer to your system.


  1. In the system web interface, go to Audio/Video > Audio > General Audio Settings.
  2. Configure the following settings (your changes save automatically):
    Setting Description

    Polycom StereoSurround

    Enables Polycom StereoSurround software for all calls.

    Note: Enabling this setting disables Polycom Acoustic Fence technology and vice versa.

    This feature isn’t available on the Studio X30 system. It also isn’t available when using a Poly Microphone IP Adapter your system.

    Sound Effects Volume Sets the volume level of the ringtone.


    Specifies the ringtone for incoming calls.

    Audio Mute Auto-Answered Calls

    Specifies whether to automatically mute incoming calls.

    Note: You must first enable Auto Answer Point-to-Point Video in Call Settings to use this feature.

    Enable M-Mode

    Specifies whether the system transmits audio using a configuration that best reproduces interactive and live performance music picked up by microphones. This feature provides the highest-possible bandwidth for audio.

    When you enable M-Mode, even the faintest musical notes come through clearly.

    Enable Keyboard Noise Reduction and NoiseBlock

    Enables Poly NoiseBlockAI, which during calls eliminates background and extraneous sounds in common working environments.

    Note: This setting is disabled when you enable M-Mode. If you use an external echo canceller, keyboard noise reduction is not available.

    Enable Join and Leave Tones

    The system plays a tone when someone joins or leaves a conference call.

    Transmission Audio Gain (dB)

    Specifies the audio level (in decibels) that the system transmits sound. Unless otherwise advised, you should set this value to 0 dB.

    Enable Audio Mute Reminder

    Specifies if the system displays a notification that the microphones are muted when it detects someone speaking.