Tones are different from noises, which are sounds that do not have a defined pitch. Noises are typically made up of a mixture of different frequencies.
Tones can be produced by a variety of sources, including musical instruments, human voices, and electronic devices. They are used in a variety of applications, such as music, speech, and communication.
Here are some examples of tones:
* The sound of a tuning fork
* The sound of a piano key being struck
* The sound of a human voice singing a note
* The sound of a siren
* The sound of a telephone ringing
Tones can be classified into two types: pure tones and complex tones. Pure tones are made up of a single frequency, while complex tones are made up of a mixture of different frequencies.
The human ear is able to perceive tones over a wide range of frequencies. The lower limit of hearing is around 20 hertz (Hz), and the upper limit is around 20,000 Hz. The average person can hear tones between 250 Hz and 8,000 Hz.
Tones play an important role in human communication. They are used to convey information, such as the meaning of words, the pitch of a voice, and the emotional state of a speaker.