Features: - Sweep tone generator (linear or logarithmic for musicians) - Function generator - Rock solid, double precision, real time, accurate, wave generator (64-bit precision IEEE 754 floating point engine) - Real time manual frequency increment or decrement (accurate, without pops and clicks) - Loops (continuous, with no lag, no clicks) - Amplitude modulation - 16 tracks real time multi-tone generator - Ultrasound generator (on a 48KHz DAC) - White noise generator - Pink noise generator - Save favorite tones and sweeps in a list for future use - Generate audio files in multi-channel mode up to 5.1 - Precise left/right channel volume control - Precise fade in and fade out time configuration - Possibility to invert one channel for cancellation effects. - Many, many pre-programmed sound tests, ready to be used by the sound professional What you can do with this app: - Speaker tests - Fine tune an audio system - Create relaxation and meditations sounds - Noise mask - Sleep inducing with pink noise - Find your Tinnitus frequency. - Age hearing loss test. - Learn many facts about sound - Your imagination is the limit! PERMISSIONS: To save audio files to your device, the app needs the generic android permission( access photos, media, and files on your device). This app has a free 7 days trial period that let you check the value of this app. Than you can upgrade to Pro without having to install another app. Please support Android app development !