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How to fix buzz or hum on audio from Polycom SoundStation VTX1000 Conference Phone VTX 1000 into auditorium?
A buzz or hum on audio from the VTX 1000 into the auditorium can occur if the unbalanced cable from AUX OUT is too long. Install a direct box at the VTX 1000 interface module and use a balanced microphone to resolve this.
Why does the auditorium hear loudness pumping up and down on the Polycom SoundStation VTX1000 Conference Phone?
The far-end loudness may pump up and down if too much speaker sound gets into the microphone or if panel gains are being changed during the call, preventing the VTX 1000 echo cancellers from adapting correctly. To resolve this, try the following: * Turn down gains. * Move the talker away from the speakers. * Move the far-end talker closer to the microphone. * Leave panel settings alone during the call.
What to do if Polycom Conference Phone VTX 1000 doesn’t work after setup: lights are OK but there is no sound?
If the VTX 1000 doesn’t work after setup, and the lights are OK but there is no sound, the internal mics and speaker might be turned off. Turn on internal mics and speaker by navigating to MENU -> AUDIO SETUP.
Power| console power | 22VDC nominal |
|---|---|
| subwoofer power | switchable 110/220 V, 50/60 Hz |
| interface module power | 90 - 264 VAC, 50 - 60 Hz |
Operating Environment| operating temperature | 40º - 104ºF (5º - 40ºC) |
|---|---|
| relative humidity | 20% - 85% (noncondensing) |
| storage temperature | -22º - 131ºF (-30º - 55ºC) |
Weight and Dimensions| console size | 14.5 x 12.25 x 2.5 in (36.8 x 31.1 x 6.4 cm) |
|---|---|
| console weight | 1.75 lb (0.8 kg) |
| subwoofer size | 8.750 x 5.150 x 9.2125 in (2.22 x 1.31 x 2.32 cm) |
| subwoofer weight | 5.75 lb (2.61 kg) |
| interface module size | 3.125 x 7.75 x 1.875 in (7.9 x 19.7 x 4.8 cm) |
| interface module weight | 0.75 lbs (0.34 kg) |
Sets the stage for the importance of speech intelligibility in business telephony and its historical context.
Examines unique characteristics of business telephony that magnify the need for clear communication and understanding.
Defines speech intelligibility and introduces the three stages of comprehension and the BRAIN model components.
Details the five critical physical parameters: Bandwidth, Reverberation, Amplitude, Interaction, and Noise (BRAIN).
Discusses how to optimize BRAIN parameters to compensate for deficiencies and improve speech comprehension in telephony.
Summarizes recent advances in BRAIN model areas and their impact on achieving better audio conference quality.
