Question

what do you mean my quality of sound waves?​

Answer 1

Timbre(or Quality) is the characteristic of sound wave that distingueshes two sound waves(generally produced from different sources)having same loudness and pitch.It depends on the shape of the waveform.

I hope you get it..Army✨

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Answer 2

The quality of a sound is that characteristic that distinguishes the two sounds of the same loudness and same pitch but emitted by two different instruments.