Physics
How does the two sounds of the same loudness and same pitch produced by different instruments differ? Draw diagrams to illustrate your answer.
Sound
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Answer
Quality (or timbre) of a sound is the characteristic which distinguishes the two sounds of same loudness and same pitch, but emitted by two different instruments because of change in their wave form.
The figure above shows the wave forms of two sounds of same loudness (i.e., same amplitude) and same pitch (i.e., same frequency), but emitted by two different sources.
They produce different sensation in our ears because they differ in wave form, one is a sine wave while other is a triangular wave.
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