Link to Diagram : http://img526.imageshack.us/img526/6201/…
The diagram above is the trace of sound waves from a cathode ray oscilloscope. Which two parts of the trace have the same pitch? Explain.
I know for sound waves to be of the same pitch, they must have the same wavelength.
The diagram above is the trace of sound waves from a cathode ray oscilloscope. Which two parts of the trace have the same pitch? Explain.
I know for sound waves to be of the same pitch, they must have the same wavelength.
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Yes same wavelength for a given speed of propagation
but also always the same frequency, irrespective of speed. Pitch is equivalent to frequency.
The oscilloscope shows time as distance on the horizontal axis.
A and B have the same period time T (represented by 2.8 cm) so therefore the same frequency f = 1/T and therefore the same pitch.
B has extra "overtones" (so would sound "richer" and more complex) but it is the same basic pitch as A.
but also always the same frequency, irrespective of speed. Pitch is equivalent to frequency.
The oscilloscope shows time as distance on the horizontal axis.
A and B have the same period time T (represented by 2.8 cm) so therefore the same frequency f = 1/T and therefore the same pitch.
B has extra "overtones" (so would sound "richer" and more complex) but it is the same basic pitch as A.