all different sounds
Because all the objects have a natural frequency
a lyre bird can imitate 20 sounds of species of birds and some sounds of human objects
Sounds that are barely audible are describes as very quiet. To hear sounds that are very quiet your ears will usually have to strain.
Pitch is not loudness; an elephant can make both loud and quiet sounds, however all of their sounds are relatively low pitch.
whistling in a high pitch voice. they also make quiet bubbling sounds
Some of the objects that make soft sounds include the soap, wringing hands, moist lips and the gentle breeze.
Dogs can hear extremely quiet sounds. Another animal that is capable of hearing sounds inaudible to humans are dolphins and bats.
If they keep flying up into quiet places searching for a place. If they make very annoying sounds as if they angry.
Viruses generally do not make sounds. They try to remain quiet and hidden so the user does not know they are there. This is why it is important to install an antivirus program on your computer.
Be quiet and listen...
Their are fewer sounds to memorize then there were objects and ideas to be represented.