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Name: brian s martin
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Question:
What are the characteristics of the that differentiate between musical notes, in terms of frequency, amplitude, and wavelength? Such as the musical note A# has a frequency of x Hz, and amplitude of x nm, and a wavelength of x nm.



Replies:
The only thing that characterizes a musical note to our ears is its frequency. The wavelength is related to the frequency (their ratio is the speed of sound) - and the wavelength of sound is generally in cm, not nm! A note with a large amplitude is loud, one with a small amplitude is soft. Loudness is usually measured on the deciBell scale, which is determined by the maximum pressure change that the note (or other noise) produced. The range of musical notes we can hear is about 30 Hz to 20,000 Hz. Different kinds of instruments produce notes that sound different because they actually produce a combination of frequencies roughly in multiples of the principle frequency of the note being played.

Arthur Smith



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