Improve listening skills by identifying frequency changes in built-in sounds. Guess affected frequencies after random filter settings. Track progress with a running score. Designed for students and audio professionals.
The app offers over 100 puzzles with real photos and cartoon styles, featuring animals and sound effects. It supports English, Chinese, and Japanese, with 12 scenes and 4 levels.
Transform into an communication with real-time audio effects. Switch between ground control and modes. Include Apollo mission videos, Quindar tones, and sound effects like rocket engines and thrusters.
