Physics for IGCSE & O level - Waves And Sounds (Section 6 - No. 20)
What factor is used to distinguish different types of sounds?
Amplitude
Wavelength
Frequency
Timbre
הֶסבֵּר
Middle C on a guitar does not sound quite the same as middle C on a piano, and its waveform looks different. They have a different quality, or timbre.