Loudness problem 20

The figures below show four traces produced by an oscilloscope for different sounds. For each trace, the same settings of the oscilloscope were used.

  • In the box, write the letter A, B, C, or D of the trace showing the sound with the highest pitch.

  • Complete the statement using the letters of the traces.

    The two traces that have the same amplitude are ......... and ......... .


main author and content editor: Jamiu Amusa