Hearing loops and telecoils allow hearing aid and cochlear implant users to hear sounds directly from assistive listening systems, helping to eliminate background noise. When a telecoil is used with a hearing loop system, the user can hear sounds from the PA system instead of their device's internal microphone. Many public venues have already installed hearing loop systems, identified by the logo. Using a telecoil with a hearing loop or wireless device improves functionality and is a cost-effective way to enhance a device.