FrequenSee

See your voice, music or test your audio equipment. See whatever your microphone can hear!

This real-time spectrum analyzer (RTA) / audio visualizer features:

- 176 high-quality frequency bands [20Hz to 22kHz]

- Logarithmic frequency scale to match human perception

- Low latency for high responsiveness

- High frame rate to see smooth frequency and amplitude movements

- Low battery drain due to high performance native code

- Fast graphics using OpenGL ES 2.0

- FFT window size 4096 @ 60 frames per second