See your music 0.2
spettro shows a scrolling logarithmic-frequency-axis spectrogram of sound files as it plays them. You can also: * Pause, continue, rewind and seek back and forth in the audio * Zoom and pan in time and in frequency * Adjust the brightness and dynamic range (contrast) * Change the FFT sample size to adjust the relative frequency/time resolution * Select from five different FFT window functions * Show where the ten score lines, six guitar strings or 88 piano keys fall * Position bar lines