What dB change represents a factor of two increase or decrease in power?
Approximately 2 dB
Approximately 3 dB✓الإجابة الصحيحة
Approximately 6 dB
Approximately 9 dB
الشرح
Ten times the base-10 logarithm of a 2:1 power ratio is 3.01 dB, so doubling or halving power is about 3 dB. Approximately 6 dB corresponds to a factor of four in power, not two.