【實用音樂app】Fourier|最夯免費app-綠色工廠好玩App

Fourier is an FFT for the iPhone! See the frequencies in sound around you in a gorgeous and snappy iOS 4-optimized app. HOW TO USE: SINGLE TAP to see the peak frequency and musical note (you can use it as a tuner!) DOUBLE TAP to pause the spectrum, to take a screenshot, or for more detailed analysis TAP AND HOLD to bring up a cursor to inspect individual frequencies