Switching between different Signal Ground Planes?

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player80

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Hi, I'm using a Chip which provides 2 inputs for audio but only provides one input for signal ground.
Depending on which audio ground is connected the audio quality will be clear, both tied together will produce noise on both inputs.

Now my question is does anyone know something like an SMD switch (relay) which can be used to switch ground from ground potential A to ground potential B?
 

Before you run off and start looking for SMD relays, maybe you should look at the source of your problem.

Apparently there is some issue between your two audio sources. What do you mean by "audio ground"? Do you have two microphones? Two line inputs? Are you using balanced signals? Do you have shields? How are they connected? Are you creating a ground loop? What kind of "noise" are you seeing? Is it 60/50 Hz line noise?

A schematic might help....
 

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