A person is presented with a tone at 400 Hz and a tone at 420 Hz, and then is presented with one at 500 Hz and one at 1000 Hz. Which pair will sound more similar and why?
A. The 500 and 1000 Hz tones will sound more similar because they define an octave.
B. The 400 and 420 Hz tones will sound more similar because they are closer together in pitch.
C. The 400 and 420 Hz tones will sound more similar because one is a harmonic of the other.
D. The 500 and 1000 Hz tones will sound more similar because we have lower thresholds for the higher frequencies.
Answer: A
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