Another UT Question

Dear All, please have a look at the below question, and help me to get the correct answer:

If a 2 holes on an area amplitude requires a reference level of 24 dB to bring the signal to 70% screen height. What would a 4 holes require:

  1. 6 dB
  2. 12 dB
  3. 18 dB
  4. 24 dB

1 Reply

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