äänitaajuuslähteet
Äänitaajuuslähteet are devices or phenomena that produce sound waves within the human hearing range, typically considered to be between 20 Hz and 20,000 Hz. These sources can be natural or artificial.
Natural äänitaajuuslähteet include environmental sounds like the rustling of leaves, the chirping of birds, the roar
Artificial äänitaajuuslähteet are man-made. This category encompasses a vast array of devices. Musical instruments, from a