Question

What is dBTP used to measure in terms of decibels?

(a) Peak amplitude of a signal

(b) Power relative to 1mW

(c) Amplitude of a signal

(d) Volume unit

The question was asked in a national level competition.

My question is taken from The Decibel topic in chapter Low Frequency Transistor Amplifier Circuit of Electronic Devices & Circuits

Answer 1

Correct choice is (a) Peak amplitude of a signal

To elaborate: We use dBTP to measure the peak amplitude of a signal in comparison to the maximum value a device could handle prior to clipping. TP stands for true peak and the values measured are always negative or zero since they are less compared to the full scale values.