What is a low-profile boundary microphone known for?

The correct choice identifies that a low-profile boundary microphone is known for picking up a lot of ambient noise. This is due to its design, which typically allows it to capture sound from a wider area than other types of microphones. These microphones are often placed flat against surfaces, such as tables or walls, and can effectively collect sound coming from multiple directions. This characteristic makes them useful in settings where sound needs to be captured from various sources within a room, such as conference calls or live events.

While they are designed to minimize handling noise and vibration due to their placement, the shape and positioning of boundary microphones can result in capturing not just the intended audio but also background sounds. This is why they might pick up a significant amount of ambient noise, which can be both an advantage and a challenge, depending on the intended use of the recording.

Other options do not accurately represent the typical characteristics of a low-profile boundary microphone. For instance, they are not specifically known for long-distance sound capture, being thick and heavy, or being limited to outdoor settings. Each of those factors pertains to different types of microphones or specific usage contexts where low-profile boundary microphones may not excel.