Which decibel range is considered not objectionable to the human ear?

The decibel range considered not objectionable to the human ear typically falls between 0 and 70 decibels. Sounds within this range are generally perceived as comfortable and do not cause discomfort or hearing damage in most circumstances. Specifically, everyday sounds like normal conversation, background music, or the hum of an air conditioning unit usually fall within this spectrum.

Selecting a higher decibel range, such as 0 to 90, means including noises that can be intrusive and potentially hazardous to hearing over prolonged exposure. For example, sounds at or above 85 decibels can lead to hearing damage if exposure is frequent or prolonged.

In contrast, the range from 0 to 100 decibels would encompass very loud sounds, including those that are often considered objectionable and can cause immediate discomfort or hearing damage.

Understanding this context helps clarify why the other ranges indicated might include sounds that the human ear finds objectionable, thereby affirming the importance of staying within the safer limits of sound exposure.