Audio-Technica Installed Sound Support provides a set of useful tools for sound contractors, front-of-house technicians, musicians, or anyone with an interest in audio. The following functions are included in the app: ** RTA with SPL Display ** Tone / Noise Generator ** Wavelength Calculator ** UHF Frequency Table ** Antenna Line Loss Calculator ** Needed Mic Gain Calculator ** Record and Playback of Microphone Test Signals ** ATUC-50 Cable Calculator