As you can see from this question opening water pipe tap has hissing noise throughout the house. Noises can also be caused by over pressurization of the plumbing system.
To determine if the plumbing has too much pressure, you can pick up a water pressure gauge from the local hardware store for ~$5.00 - $10.00. They are designed to attach to an standard hose bib, and can be used to measure static water pressure.
If you find that the system has higher than normal pressure (between 40-65 psi is normal), then you should first make a call to your local municipality and ask what the static pressure outside your house is. If the pressure outside the house is as high as the pressure you are reading inside, then you will have to install, adjust, or repair a pressure reducing valve inside the house on the main service line (typically after the meter).
If you already have a pressure reducing valve, you can try to adjust it. If that does not work it likely means the valve is bad, and will have to be replaced. If you don't have a pressure reducing valve or the current one was found to be bad, you'll likely want to call a plumber to install/repair the valve. If you're handy enough to fix/install it yourself (with proper permits of course), then you know what to do... so get too it.