The answer to 'pipe making noise' is that there are several common causes, including water pressure issues, mineral buildup, loose pipe connections, and problems with the pipes themselves. Symptoms may include banging, whistling, or other loud noises coming from the pipes, especially when water is running. Solutions can range from simple DIY fixes to more complex plumbing repairs that require a professional.
If the pipe noise is intermittent or only occurs when certain fixtures are used, it may be a sign of a localized problem that you can potentially address yourself. However, if the noise is constant or you're unsure of the cause, it's best to have a licensed plumber inspect the issue to avoid further damage or leaks.