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Filter Boost Gain is wrong

Category: Software
Product Number: ADAU1466z, ADAU1466, ADAU1466
Software Version: Sigma Studio v4.5

Dear Team,

We are using the following Filter Module 

When using the Filter , we have observed that when setting the gain in the slider , there is always a -5dB difference from expected. Can you confirm if this is a bug, if yes , what is the fix for this.

Regards,

Hermione

Parents
  • Hello Hermione,

    I'm getting the expected results out of this block. Please look below.

    2.8Vp-p is the output sensitivity of the eval board for a 0dBFS signal. I set the filter for -6dB, so it's a half of 0dBFS. please look at the output waveform for 0dB and -6dB below.

    So, could you please explain how and where you measured the difference? 

    A step-by-step instruction of what you tried and how did you come up with those results would be helpful to simulate the same.

    Regards,

    Harish

Reply
  • Hello Hermione,

    I'm getting the expected results out of this block. Please look below.

    2.8Vp-p is the output sensitivity of the eval board for a 0dBFS signal. I set the filter for -6dB, so it's a half of 0dBFS. please look at the output waveform for 0dB and -6dB below.

    So, could you please explain how and where you measured the difference? 

    A step-by-step instruction of what you tried and how did you come up with those results would be helpful to simulate the same.

    Regards,

    Harish

Children