2023-01-01 00:00:00 This app allows you to use your smartphone or tablet as an audio oscilloscope for easy visualization of sound waves picked up from your microphone. Adjustments for controlling the scope's display area include vertical gain, trace position, trace brightness, time/div, sweep delay, skin color, sync triggering and more. Audio signal input is through your device's microphone or microphone jack. Internal calibration signals are also provided.