Polycom C16 Uživatelský manuál stáhnout pdf (Strana 314)

100

101

Design Guide for the Polycom SoundStructure C16, C12, C8, and SR12

10 - 6

reduce room gain by lowering the audio amplifier level and increasing the

input gain on the remote audio coming into the SoundStructure to ensure the

signal levels are at a reasonable level.

If the reference is set properly and includes all the remote audio sources and

there is still an echo heard by the remote participants, the next step is to under-

stand how the amplifier output fader is set.

In some applications, the line level outputs of the SoundStructure could be

connected to the inputs of a microphone-only device that requires the outputs

of the SoundStructure to be attenuated significantly to be compatible with the

microphone level inputs. If the output fader on the amplifier channel is used

to attenuate the amplifier signal as shown in the figure below and the AEC ref-

erence is also set to the amplifier output, then the AEC reference would also be

attenuated by the fader amount.

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Polycom C16 Uživatelský manuál Strana 314

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