The answers are –
Pitch analysis A = Chirpy
Pitch analysis B = Greeting
Pitch analysis C = Low
Pitch analysis D = Normal
Pitch analysis E = Question
Here they are in the correct order. Interesting to note the most musical sounding is the greeting (number 2 below) which is the smoothest curve at a consistently high pitch around A4 / 420Hz.
Hello Chirpy. Starts low, rises to a peak and then slowly comes down.
Hello Greeting. The most musical! 2 high pitches about a third apart. The interval looks smaller than it sounds to our ears on this scale.
Hello Low. Starts quite high, goes very low but with an uptick at the end.
Hello Normal. 2 distinct pitches with a definite uptick at the end, which we’ve indicated with “Wa”.
Hello Question. The most complex pattern with the “lo” syllable having a low pitch follow by a longer high pitch which descends but is followed by an inquisitorial uptick.