
how we can remove hiss sound from the system?
I think compressor is capable enough to handle the noise so i don't need external bias circuit then also i had used.
Kindly review this section and guide us.
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SSM2166
Production
The SSM2166 integrates a complete and flexible solution for conditioning microphone inputs in computer audio systems. It is also excellent for improving...
Datasheet
SSM2166 on Analog.com

how we can remove hiss sound from the system?
I think compressor is capable enough to handle the noise so i don't need external bias circuit then also i had used.
Kindly review this section and guide us.
Hi,
A hiss sound can be probably a high-frequency generation.
Is it possible for you to probe and have a scope shot on MIC_IN+, Pin7, and AMP_IN+?
Also, I can see that you have used most of the recommended values for typical application as shown on Figure 2 or Figure 16 of the SSM2166 data sheet. For the Audio +IN (Pin 7), it is recommended to use a 0.1uF coupling capacitor.
Regards!