Dr. Lee records the sound by using an acoustic sensor while his son is playing the piano. His son played the piano keys from low do (261.6 Hz) to high do (523.2 Hz) consecutively for 10 seconds, and Dr. Lee collected the sound at a sampling frequency of 1000 Hz for 10 seconds. One frequency signal will be aliased. Calculate the frequency of the reconstructed signal, which is different from the original frequency. If you think there exist multiple aliased frequency signals, write all. do re mi fa sol la ti do 261.6 293.7 329.6 349.2 392.0 440.0 493.9 523.2 Octave (with frequency doubled across) Answer up 1 decimal place (e.g., 0.1), and put the right unit. If necessary, round off.