Audio Tests

You can test your system speakers, audio levels, and Polycom StereoSurround setup.

Test Speakers

Verify that you correctly connected the speakers to your system.

Prerequisite

You must enable Polycom StereoSurround to test both speakers at once.

The following setups don’t support stereo audio:

  • Standalone Studio X30 systems
  • G7500, Studio X50, and Studio X30 systems paired with Poly Trio systems

Procedure

  1. In the system web interface, go to Diagnostics > Audio Test.
  2. Do one of the following:
    • Select Start.
    • Select Left to test the left speaker.
    • Select Right to test the right speaker.
    • Select Both to test both speakers (if you enable Polycom StereoSurround).
    If you run a test during a call, people on the far site also hear the test tone.
A 473 Hz tone indicates that the local audio connections are correct.

Test Audio Levels

Audio meters show you real-time audio input and output signals for your system, including microphones, far-site audio, and other connected audio devices.

Procedure

  1. Do one of the following:
    • In the system web interface, go to Diagnostics > Audio Tests > Audio Meters.
    • In the local interface, go to Settings > System Information > Diagnostics > Audio Meter.
  2. To test the audio levels, do one of the following:
    • To check the near-site audio, speak into your microphones.
    • To check the far-site audio, ask a call participant to speak or call a phone in the far-site room to hear it ring.
    Occasional peaks of +12 dB to +16 dB with loud transient noises are acceptable. If you see +20 on the audio meter, the audio signal is 0 dBFS and the audio might be distorted. A meter reading of +20dB corresponds to 0dBFS in the room system audio. A signal at this level is likely clipping the audio system.

Test Polycom StereoSurround

After you configure the system to use Polycom StereoSurround, you can place a test call to see if it works.

Prerequisite

Make sure the microphones are positioned correctly.

The following setups don’t support stereo audio:

  • Standalone Studio X30 systems
  • G7500, Studio X50, and Studio X30 systems paired with Poly Trio systems

Procedure

  1. In the system web interface, go to Audio/Video > Audio > Audio Input.
  2. Gently blow on the left and right leg of each microphone while watching the audio meters to identify the left and right inputs.
  3. Test the speakers to check volume and verify that audio cables are connected.
    If the system is in a call, the far site hears the tone.
  4. Optional: Exchange the right and left speakers if they are reversed.
  5. Adjust the volume control on your external audio amplifier so that the test tone sounds as loud as a person speaking in the room. If you use a Sound Pressure Level (SPL) meter, it should measure approximately 80 to 90 dBA in the middle of the room.
  6. Repeat these steps for Audio Output.