White Noise

White noise is a steady low noise, such as a running air conditioner or fan, or a radio tuned to static between stations. Listening to white noise can drown out distracting noises, help a person concentrate, or help a person sleep more soundly and wake up feeling more refreshed.

Based on advanced Electroencephalography theory, brainwave test has been widely used in medical field. Doctors can detect people’s mood condition according to the brainwave frequency. Now White Noise applies the same technology into Android application. It is specially designed for the best Android user experience, and will give your brain a fresh start any time during the day.
White noise is a steady low noise, such as a running air conditioner or fan, or a radio tuned to static between stations. Listening to white noise can drown out distracting noises, help a person concentrate, or help a person sleep more soundly and wake up feeling more refreshed.

Screenshots: 

Application Permissions:

Wake lock- Allows using PowerManager WakeLocks to keep processor from sleeping or screen from dimming

Internet- Allows applications to open network sockets.

Set orientation- Allows low-level access to setting the orientation (actually rotation) of the screen.

Read phone state- Allows read only access to phone state.

You can download at: http://apk.cuaban.net/detail/10981/White-Noise.html