What typically characterizes sounds captured by omni-directional microphones?

Omni-directional microphones are designed to capture sound equally from all directions. This characteristic allows them to pick up sound waves coming from the front, back, and sides with the same sensitivity, making them ideal for certain applications where ambient sound is desired or where it's important to capture a natural sound environment. This feature is beneficial in settings such as live performances or recording environments, where a more immersive and spacious audio experience is crucial.

The other characteristics listed do not accurately describe the nature of omni-directional microphones. Selective sensitivity pertains to directional microphones, which are designed to focus on sounds from specific directions. Enhanced clarity of high frequencies typically relates to microphones with emphasis or boosting capabilities for those frequencies, which is not a trait of omni-directional mics. Low frequency attenuation implies a reduction in lower frequency sounds, which is not characteristic of omni-directional designs that strive to equally capture the full range of sound.