Amplitude:

The amplitude of a periodic variable is a measure of its change over a single period (such as time or spatial period). There are various definitions of amplitude (see below), which are all functions of the magnitude of the difference between the variable's extreme values.

Frequency:

Frequency is the number of occurrences of a repeating event per unit time. It is also referred to as temporal frequency. The period is the duration of one cycle in a repeating event, so the period is the reciprocal of the frequency.

Intensidad de sonido:

La intensidad de sonido se define como la potencia acústica transferida por una onda sonora por unidad de área normal a la dirección de propagación.

TO:

El tono es la sensación auditiva o atributo psicológico de los sonidos1 que los caracteriza como más agudos o más graves, en función de la propiedad física llamada frecuencia.

TIMBRE:

In music, timbre , also known as tone color or tone qualityfrom psychoacoustics, is the quality of a musical note or sound or tone that distinguishes different types of sound production, such as voices and musical instruments, string instruments, wind instruments, and percussion instruments.