What are some examples of absolute threshold of hearing?

The absolute threshold of hearing refers to the minimum sound level that an average human ear can detect. For example, this is typically around 0 decibels (dB) for a pure tone at 1,000 Hz in a quiet environment. Other examples include the faintest rustle of leaves or the softest whisper, which can be perceived under ideal conditions. In practical terms, this threshold can vary among individuals and is influenced by factors such as age and hearing health.